Messages in this thread Patch in this message | | | Date | Fri, 19 Nov 2021 17:50:26 +0100 | From | Peter Zijlstra <> | Subject | [PATCH 3/3] x86: Add straight-line-speculation mitigation |
| |
This little patch makes use of an upcomming GCC feature to mitigate straight-line-speculation for x86:
https://gcc.gnu.org/g:53a643f8568067d7700a9f2facc8ba39974973d3 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102952 https://bugs.llvm.org/show_bug.cgi?id=52323
It's built tested on x86_64-allyesconfig using GCC-12 and GCC-11. It's also been boot tested on x86_64-defconfig+kvm_guest.config using GCC-12.
Maintenace overhead of this should be fairly low due to objtool validation.
Size overhead of all these additional int3 instructions comes to:
text data bss dec hex filename 22267751 6933356 2011368 31212475 1dc43bb defconfig-build/vmlinux 22804126 6933356 1470696 31208178 1dc32f2 defconfig-build/vmlinux.sls
Or roughly 2.4% additional text.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> --- arch/x86/Kconfig | 12 +++++ arch/x86/Makefile | 4 + arch/x86/crypto/aegis128-aesni-asm.S | 48 +++++++++++----------- arch/x86/crypto/aes_ctrby8_avx-x86_64.S | 2 arch/x86/crypto/aesni-intel_asm.S | 56 +++++++++++++------------- arch/x86/crypto/aesni-intel_avx-x86_64.S | 40 +++++++++--------- arch/x86/crypto/blake2s-core.S | 4 - arch/x86/crypto/blowfish-x86_64-asm_64.S | 12 ++--- arch/x86/crypto/camellia-aesni-avx-asm_64.S | 14 +++--- arch/x86/crypto/camellia-aesni-avx2-asm_64.S | 14 +++--- arch/x86/crypto/camellia-x86_64-asm_64.S | 12 ++--- arch/x86/crypto/cast5-avx-x86_64-asm_64.S | 12 ++--- arch/x86/crypto/cast6-avx-x86_64-asm_64.S | 10 ++-- arch/x86/crypto/chacha-avx2-x86_64.S | 6 +- arch/x86/crypto/chacha-avx512vl-x86_64.S | 6 +- arch/x86/crypto/chacha-ssse3-x86_64.S | 8 +-- arch/x86/crypto/crc32-pclmul_asm.S | 2 arch/x86/crypto/crc32c-pcl-intel-asm_64.S | 2 arch/x86/crypto/crct10dif-pcl-asm_64.S | 2 arch/x86/crypto/des3_ede-asm_64.S | 4 - arch/x86/crypto/ghash-clmulni-intel_asm.S | 6 +- arch/x86/crypto/nh-avx2-x86_64.S | 2 arch/x86/crypto/nh-sse2-x86_64.S | 2 arch/x86/crypto/poly1305-x86_64-cryptogams.pl | 38 ++++++++--------- arch/x86/crypto/serpent-avx-x86_64-asm_64.S | 10 ++-- arch/x86/crypto/serpent-avx2-asm_64.S | 10 ++-- arch/x86/crypto/serpent-sse2-i586-asm_32.S | 6 +- arch/x86/crypto/serpent-sse2-x86_64-asm_64.S | 6 +- arch/x86/crypto/sha1_avx2_x86_64_asm.S | 2 arch/x86/crypto/sha1_ni_asm.S | 2 arch/x86/crypto/sha1_ssse3_asm.S | 2 arch/x86/crypto/sha256-avx-asm.S | 2 arch/x86/crypto/sha256-avx2-asm.S | 2 arch/x86/crypto/sha256-ssse3-asm.S | 2 arch/x86/crypto/sha256_ni_asm.S | 2 arch/x86/crypto/sha512-avx-asm.S | 2 arch/x86/crypto/sha512-avx2-asm.S | 2 arch/x86/crypto/sha512-ssse3-asm.S | 2 arch/x86/crypto/sm4-aesni-avx-asm_64.S | 12 ++--- arch/x86/crypto/sm4-aesni-avx2-asm_64.S | 8 +-- arch/x86/crypto/twofish-avx-x86_64-asm_64.S | 10 ++-- arch/x86/crypto/twofish-i586-asm_32.S | 4 - arch/x86/crypto/twofish-x86_64-asm_64-3way.S | 6 +- arch/x86/crypto/twofish-x86_64-asm_64.S | 4 - arch/x86/entry/entry_32.S | 2 arch/x86/entry/entry_64.S | 12 ++--- arch/x86/entry/thunk_32.S | 2 arch/x86/entry/thunk_64.S | 2 arch/x86/entry/vdso/vdso32/system_call.S | 2 arch/x86/entry/vdso/vsgx.S | 2 arch/x86/entry/vsyscall/vsyscall_emu_64.S | 6 +- arch/x86/include/asm/linkage.h | 15 ++++++ arch/x86/include/asm/paravirt.h | 2 arch/x86/include/asm/qspinlock_paravirt.h | 4 - arch/x86/include/asm/static_call.h | 2 arch/x86/kernel/acpi/wakeup_32.S | 6 +- arch/x86/kernel/alternative.c | 2 arch/x86/kernel/ftrace.c | 2 arch/x86/kernel/ftrace_32.S | 6 +- arch/x86/kernel/ftrace_64.S | 8 +-- arch/x86/kernel/head_32.S | 2 arch/x86/kernel/irqflags.S | 2 arch/x86/kernel/paravirt.c | 4 - arch/x86/kernel/relocate_kernel_32.S | 10 ++-- arch/x86/kernel/relocate_kernel_64.S | 10 ++-- arch/x86/kernel/sev_verify_cbit.S | 2 arch/x86/kernel/static_call.c | 5 +- arch/x86/kernel/verify_cpu.S | 4 - arch/x86/kvm/emulate.c | 4 - arch/x86/kvm/svm/vmenter.S | 4 - arch/x86/kvm/vmx/vmenter.S | 14 +++--- arch/x86/lib/atomic64_386_32.S | 2 arch/x86/lib/atomic64_cx8_32.S | 16 +++---- arch/x86/lib/checksum_32.S | 8 +-- arch/x86/lib/clear_page_64.S | 6 +- arch/x86/lib/cmpxchg16b_emu.S | 4 - arch/x86/lib/cmpxchg8b_emu.S | 4 - arch/x86/lib/copy_mc_64.S | 6 +- arch/x86/lib/copy_page_64.S | 4 - arch/x86/lib/copy_user_64.S | 10 ++-- arch/x86/lib/csum-copy_64.S | 2 arch/x86/lib/error-inject.c | 3 - arch/x86/lib/getuser.S | 22 +++++----- arch/x86/lib/hweight.S | 6 +- arch/x86/lib/iomap_copy_64.S | 2 arch/x86/lib/memcpy_64.S | 12 ++--- arch/x86/lib/memmove_64.S | 4 - arch/x86/lib/memset_64.S | 6 +- arch/x86/lib/msr-reg.S | 4 - arch/x86/lib/putuser.S | 6 +- arch/x86/lib/retpoline.S | 4 - arch/x86/math-emu/div_Xsig.S | 2 arch/x86/math-emu/div_small.S | 2 arch/x86/math-emu/mul_Xsig.S | 6 +- arch/x86/math-emu/polynom_Xsig.S | 2 arch/x86/math-emu/reg_norm.S | 6 +- arch/x86/math-emu/reg_round.S | 2 arch/x86/math-emu/reg_u_add.S | 2 arch/x86/math-emu/reg_u_div.S | 2 arch/x86/math-emu/reg_u_mul.S | 2 arch/x86/math-emu/reg_u_sub.S | 2 arch/x86/math-emu/round_Xsig.S | 4 - arch/x86/math-emu/shr_Xsig.S | 8 +-- arch/x86/math-emu/wm_shrx.S | 16 +++---- arch/x86/mm/mem_encrypt_boot.S | 4 - arch/x86/platform/efi/efi_stub_32.S | 2 arch/x86/platform/efi/efi_stub_64.S | 2 arch/x86/platform/efi/efi_thunk_64.S | 2 arch/x86/platform/olpc/xo1-wakeup.S | 6 +- arch/x86/power/hibernate_asm_32.S | 4 - arch/x86/power/hibernate_asm_64.S | 4 - arch/x86/um/checksum_32.S | 4 - arch/x86/um/setjmp_32.S | 2 arch/x86/um/setjmp_64.S | 2 arch/x86/xen/xen-asm.S | 12 ++--- arch/x86/xen/xen-head.S | 2 samples/ftrace/ftrace-direct-modify.c | 4 - samples/ftrace/ftrace-direct-too.c | 2 samples/ftrace/ftrace-direct.c | 2 scripts/Makefile.build | 3 - tools/objtool/arch/x86/decode.c | 13 ++++-- tools/objtool/builtin-check.c | 3 - tools/objtool/check.c | 14 ++++++ tools/objtool/include/objtool/arch.h | 1 tools/objtool/include/objtool/builtin.h | 2 125 files changed, 441 insertions(+), 386 deletions(-)
--- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -472,6 +472,18 @@ config RETPOLINE branches. Requires a compiler with -mindirect-branch=thunk-extern support for full protection. The kernel may run slower. +config CC_HAS_SLS + def_bool $(cc-option,-mharden-sls=all) + +config SLS + bool "Mitigate Straight-Line-Speculation" + depends on CC_HAS_SLS && X86_64 + default n + help + Compile the kernel with straight-line-speculation options to guard + against straight line speculation. The kernel image might be slightly + larger. + config X86_CPU_RESCTRL bool "x86 CPU resource control support" depends on X86 && (CPU_SUP_INTEL || CPU_SUP_AMD) --- a/arch/x86/Makefile +++ b/arch/x86/Makefile @@ -191,6 +191,10 @@ ifdef CONFIG_RETPOLINE endif endif +ifdef CONFIG_SLS + KBUILD_CFLAGS += -mharden-sls=all +endif + KBUILD_LDFLAGS += -m elf_$(UTS_MACHINE) ifdef CONFIG_LTO_CLANG --- a/arch/x86/crypto/aegis128-aesni-asm.S +++ b/arch/x86/crypto/aegis128-aesni-asm.S @@ -122,7 +122,7 @@ SYM_FUNC_START_LOCAL(__load_partial) pxor T0, MSG .Lld_partial_8: - ret + RET SYM_FUNC_END(__load_partial) /* @@ -180,7 +180,7 @@ SYM_FUNC_START_LOCAL(__store_partial) mov %r10b, (%r9) .Lst_partial_1: - ret + RET SYM_FUNC_END(__store_partial) /* @@ -225,7 +225,7 @@ SYM_FUNC_START(crypto_aegis128_aesni_ini movdqu STATE4, 0x40(STATEP) FRAME_END - ret + RET SYM_FUNC_END(crypto_aegis128_aesni_init) /* @@ -337,7 +337,7 @@ SYM_FUNC_START(crypto_aegis128_aesni_ad) movdqu STATE3, 0x30(STATEP) movdqu STATE4, 0x40(STATEP) FRAME_END - ret + RET .Lad_out_1: movdqu STATE4, 0x00(STATEP) @@ -346,7 +346,7 @@ SYM_FUNC_START(crypto_aegis128_aesni_ad) movdqu STATE2, 0x30(STATEP) movdqu STATE3, 0x40(STATEP) FRAME_END - ret + RET .Lad_out_2: movdqu STATE3, 0x00(STATEP) @@ -355,7 +355,7 @@ SYM_FUNC_START(crypto_aegis128_aesni_ad) movdqu STATE1, 0x30(STATEP) movdqu STATE2, 0x40(STATEP) FRAME_END - ret + RET .Lad_out_3: movdqu STATE2, 0x00(STATEP) @@ -364,7 +364,7 @@ SYM_FUNC_START(crypto_aegis128_aesni_ad) movdqu STATE0, 0x30(STATEP) movdqu STATE1, 0x40(STATEP) FRAME_END - ret + RET .Lad_out_4: movdqu STATE1, 0x00(STATEP) @@ -373,11 +373,11 @@ SYM_FUNC_START(crypto_aegis128_aesni_ad) movdqu STATE4, 0x30(STATEP) movdqu STATE0, 0x40(STATEP) FRAME_END - ret + RET .Lad_out: FRAME_END - ret + RET SYM_FUNC_END(crypto_aegis128_aesni_ad) .macro encrypt_block a s0 s1 s2 s3 s4 i @@ -452,7 +452,7 @@ SYM_FUNC_START(crypto_aegis128_aesni_enc movdqu STATE2, 0x30(STATEP) movdqu STATE3, 0x40(STATEP) FRAME_END - ret + RET .Lenc_out_1: movdqu STATE3, 0x00(STATEP) @@ -461,7 +461,7 @@ SYM_FUNC_START(crypto_aegis128_aesni_enc movdqu STATE1, 0x30(STATEP) movdqu STATE2, 0x40(STATEP) FRAME_END - ret + RET .Lenc_out_2: movdqu STATE2, 0x00(STATEP) @@ -470,7 +470,7 @@ SYM_FUNC_START(crypto_aegis128_aesni_enc movdqu STATE0, 0x30(STATEP) movdqu STATE1, 0x40(STATEP) FRAME_END - ret + RET .Lenc_out_3: movdqu STATE1, 0x00(STATEP) @@ -479,7 +479,7 @@ SYM_FUNC_START(crypto_aegis128_aesni_enc movdqu STATE4, 0x30(STATEP) movdqu STATE0, 0x40(STATEP) FRAME_END - ret + RET .Lenc_out_4: movdqu STATE0, 0x00(STATEP) @@ -488,11 +488,11 @@ SYM_FUNC_START(crypto_aegis128_aesni_enc movdqu STATE3, 0x30(STATEP) movdqu STATE4, 0x40(STATEP) FRAME_END - ret + RET .Lenc_out: FRAME_END - ret + RET SYM_FUNC_END(crypto_aegis128_aesni_enc) /* @@ -532,7 +532,7 @@ SYM_FUNC_START(crypto_aegis128_aesni_enc movdqu STATE3, 0x40(STATEP) FRAME_END - ret + RET SYM_FUNC_END(crypto_aegis128_aesni_enc_tail) .macro decrypt_block a s0 s1 s2 s3 s4 i @@ -606,7 +606,7 @@ SYM_FUNC_START(crypto_aegis128_aesni_dec movdqu STATE2, 0x30(STATEP) movdqu STATE3, 0x40(STATEP) FRAME_END - ret + RET .Ldec_out_1: movdqu STATE3, 0x00(STATEP) @@ -615,7 +615,7 @@ SYM_FUNC_START(crypto_aegis128_aesni_dec movdqu STATE1, 0x30(STATEP) movdqu STATE2, 0x40(STATEP) FRAME_END - ret + RET .Ldec_out_2: movdqu STATE2, 0x00(STATEP) @@ -624,7 +624,7 @@ SYM_FUNC_START(crypto_aegis128_aesni_dec movdqu STATE0, 0x30(STATEP) movdqu STATE1, 0x40(STATEP) FRAME_END - ret + RET .Ldec_out_3: movdqu STATE1, 0x00(STATEP) @@ -633,7 +633,7 @@ SYM_FUNC_START(crypto_aegis128_aesni_dec movdqu STATE4, 0x30(STATEP) movdqu STATE0, 0x40(STATEP) FRAME_END - ret + RET .Ldec_out_4: movdqu STATE0, 0x00(STATEP) @@ -642,11 +642,11 @@ SYM_FUNC_START(crypto_aegis128_aesni_dec movdqu STATE3, 0x30(STATEP) movdqu STATE4, 0x40(STATEP) FRAME_END - ret + RET .Ldec_out: FRAME_END - ret + RET SYM_FUNC_END(crypto_aegis128_aesni_dec) /* @@ -696,7 +696,7 @@ SYM_FUNC_START(crypto_aegis128_aesni_dec movdqu STATE3, 0x40(STATEP) FRAME_END - ret + RET SYM_FUNC_END(crypto_aegis128_aesni_dec_tail) /* @@ -743,5 +743,5 @@ SYM_FUNC_START(crypto_aegis128_aesni_fin movdqu MSG, (%rsi) FRAME_END - ret + RET SYM_FUNC_END(crypto_aegis128_aesni_final) --- a/arch/x86/crypto/aes_ctrby8_avx-x86_64.S +++ b/arch/x86/crypto/aes_ctrby8_avx-x86_64.S @@ -525,7 +525,7 @@ /* return updated IV */ vpshufb xbyteswap, xcounter, xcounter vmovdqu xcounter, (p_iv) - ret + RET .endm /* --- a/arch/x86/crypto/aesni-intel_asm.S +++ b/arch/x86/crypto/aesni-intel_asm.S @@ -1594,7 +1594,7 @@ SYM_FUNC_START(aesni_gcm_dec) GCM_ENC_DEC dec GCM_COMPLETE arg10, arg11 FUNC_RESTORE - ret + RET SYM_FUNC_END(aesni_gcm_dec) @@ -1683,7 +1683,7 @@ SYM_FUNC_START(aesni_gcm_enc) GCM_COMPLETE arg10, arg11 FUNC_RESTORE - ret + RET SYM_FUNC_END(aesni_gcm_enc) /***************************************************************************** @@ -1701,7 +1701,7 @@ SYM_FUNC_START(aesni_gcm_init) FUNC_SAVE GCM_INIT %arg3, %arg4,%arg5, %arg6 FUNC_RESTORE - ret + RET SYM_FUNC_END(aesni_gcm_init) /***************************************************************************** @@ -1716,7 +1716,7 @@ SYM_FUNC_START(aesni_gcm_enc_update) FUNC_SAVE GCM_ENC_DEC enc FUNC_RESTORE - ret + RET SYM_FUNC_END(aesni_gcm_enc_update) /***************************************************************************** @@ -1731,7 +1731,7 @@ SYM_FUNC_START(aesni_gcm_dec_update) FUNC_SAVE GCM_ENC_DEC dec FUNC_RESTORE - ret + RET SYM_FUNC_END(aesni_gcm_dec_update) /***************************************************************************** @@ -1746,7 +1746,7 @@ SYM_FUNC_START(aesni_gcm_finalize) FUNC_SAVE GCM_COMPLETE %arg3 %arg4 FUNC_RESTORE - ret + RET SYM_FUNC_END(aesni_gcm_finalize) #endif @@ -1762,7 +1762,7 @@ SYM_FUNC_START_LOCAL(_key_expansion_256a pxor %xmm1, %xmm0 movaps %xmm0, (TKEYP) add $0x10, TKEYP - ret + RET SYM_FUNC_END(_key_expansion_256a) SYM_FUNC_END_ALIAS(_key_expansion_128) @@ -1787,7 +1787,7 @@ SYM_FUNC_START_LOCAL(_key_expansion_192a shufps $0b01001110, %xmm2, %xmm1 movaps %xmm1, 0x10(TKEYP) add $0x20, TKEYP - ret + RET SYM_FUNC_END(_key_expansion_192a) SYM_FUNC_START_LOCAL(_key_expansion_192b) @@ -1806,7 +1806,7 @@ SYM_FUNC_START_LOCAL(_key_expansion_192b movaps %xmm0, (TKEYP) add $0x10, TKEYP - ret + RET SYM_FUNC_END(_key_expansion_192b) SYM_FUNC_START_LOCAL(_key_expansion_256b) @@ -1818,7 +1818,7 @@ SYM_FUNC_START_LOCAL(_key_expansion_256b pxor %xmm1, %xmm2 movaps %xmm2, (TKEYP) add $0x10, TKEYP - ret + RET SYM_FUNC_END(_key_expansion_256b) /* @@ -1933,7 +1933,7 @@ SYM_FUNC_START(aesni_set_key) popl KEYP #endif FRAME_END - ret + RET SYM_FUNC_END(aesni_set_key) /* @@ -1957,7 +1957,7 @@ SYM_FUNC_START(aesni_enc) popl KEYP #endif FRAME_END - ret + RET SYM_FUNC_END(aesni_enc) /* @@ -2014,7 +2014,7 @@ SYM_FUNC_START_LOCAL(_aesni_enc1) aesenc KEY, STATE movaps 0x70(TKEYP), KEY aesenclast KEY, STATE - ret + RET SYM_FUNC_END(_aesni_enc1) /* @@ -2122,7 +2122,7 @@ SYM_FUNC_START_LOCAL(_aesni_enc4) aesenclast KEY, STATE2 aesenclast KEY, STATE3 aesenclast KEY, STATE4 - ret + RET SYM_FUNC_END(_aesni_enc4) /* @@ -2147,7 +2147,7 @@ SYM_FUNC_START(aesni_dec) popl KEYP #endif FRAME_END - ret + RET SYM_FUNC_END(aesni_dec) /* @@ -2204,7 +2204,7 @@ SYM_FUNC_START_LOCAL(_aesni_dec1) aesdec KEY, STATE movaps 0x70(TKEYP), KEY aesdeclast KEY, STATE - ret + RET SYM_FUNC_END(_aesni_dec1) /* @@ -2312,7 +2312,7 @@ SYM_FUNC_START_LOCAL(_aesni_dec4) aesdeclast KEY, STATE2 aesdeclast KEY, STATE3 aesdeclast KEY, STATE4 - ret + RET SYM_FUNC_END(_aesni_dec4) /* @@ -2372,7 +2372,7 @@ SYM_FUNC_START(aesni_ecb_enc) popl LEN #endif FRAME_END - ret + RET SYM_FUNC_END(aesni_ecb_enc) /* @@ -2433,7 +2433,7 @@ SYM_FUNC_START(aesni_ecb_dec) popl LEN #endif FRAME_END - ret + RET SYM_FUNC_END(aesni_ecb_dec) /* @@ -2477,7 +2477,7 @@ SYM_FUNC_START(aesni_cbc_enc) popl IVP #endif FRAME_END - ret + RET SYM_FUNC_END(aesni_cbc_enc) /* @@ -2570,7 +2570,7 @@ SYM_FUNC_START(aesni_cbc_dec) popl IVP #endif FRAME_END - ret + RET SYM_FUNC_END(aesni_cbc_dec) /* @@ -2627,7 +2627,7 @@ SYM_FUNC_START(aesni_cts_cbc_enc) popl IVP #endif FRAME_END - ret + RET SYM_FUNC_END(aesni_cts_cbc_enc) /* @@ -2688,7 +2688,7 @@ SYM_FUNC_START(aesni_cts_cbc_dec) popl IVP #endif FRAME_END - ret + RET SYM_FUNC_END(aesni_cts_cbc_dec) .pushsection .rodata @@ -2725,7 +2725,7 @@ SYM_FUNC_START_LOCAL(_aesni_inc_init) mov $1, TCTR_LOW movq TCTR_LOW, INC movq CTR, TCTR_LOW - ret + RET SYM_FUNC_END(_aesni_inc_init) /* @@ -2753,7 +2753,7 @@ SYM_FUNC_START_LOCAL(_aesni_inc) .Linc_low: movaps CTR, IV pshufb BSWAP_MASK, IV - ret + RET SYM_FUNC_END(_aesni_inc) /* @@ -2816,7 +2816,7 @@ SYM_FUNC_START(aesni_ctr_enc) movups IV, (IVP) .Lctr_enc_just_ret: FRAME_END - ret + RET SYM_FUNC_END(aesni_ctr_enc) #endif @@ -2932,7 +2932,7 @@ SYM_FUNC_START(aesni_xts_encrypt) popl IVP #endif FRAME_END - ret + RET .Lxts_enc_1x: add $64, LEN @@ -3092,7 +3092,7 @@ SYM_FUNC_START(aesni_xts_decrypt) popl IVP #endif FRAME_END - ret + RET .Lxts_dec_1x: add $64, LEN --- a/arch/x86/crypto/aesni-intel_avx-x86_64.S +++ b/arch/x86/crypto/aesni-intel_avx-x86_64.S @@ -1767,7 +1767,7 @@ SYM_FUNC_START(aesni_gcm_init_avx_gen2) FUNC_SAVE INIT GHASH_MUL_AVX, PRECOMPUTE_AVX FUNC_RESTORE - ret + RET SYM_FUNC_END(aesni_gcm_init_avx_gen2) ############################################################################### @@ -1788,15 +1788,15 @@ SYM_FUNC_START(aesni_gcm_enc_update_avx_ # must be 192 GCM_ENC_DEC INITIAL_BLOCKS_AVX, GHASH_8_ENCRYPT_8_PARALLEL_AVX, GHASH_LAST_8_AVX, GHASH_MUL_AVX, ENC, 11 FUNC_RESTORE - ret + RET key_128_enc_update: GCM_ENC_DEC INITIAL_BLOCKS_AVX, GHASH_8_ENCRYPT_8_PARALLEL_AVX, GHASH_LAST_8_AVX, GHASH_MUL_AVX, ENC, 9 FUNC_RESTORE - ret + RET key_256_enc_update: GCM_ENC_DEC INITIAL_BLOCKS_AVX, GHASH_8_ENCRYPT_8_PARALLEL_AVX, GHASH_LAST_8_AVX, GHASH_MUL_AVX, ENC, 13 FUNC_RESTORE - ret + RET SYM_FUNC_END(aesni_gcm_enc_update_avx_gen2) ############################################################################### @@ -1817,15 +1817,15 @@ SYM_FUNC_START(aesni_gcm_dec_update_avx_ # must be 192 GCM_ENC_DEC INITIAL_BLOCKS_AVX, GHASH_8_ENCRYPT_8_PARALLEL_AVX, GHASH_LAST_8_AVX, GHASH_MUL_AVX, DEC, 11 FUNC_RESTORE - ret + RET key_128_dec_update: GCM_ENC_DEC INITIAL_BLOCKS_AVX, GHASH_8_ENCRYPT_8_PARALLEL_AVX, GHASH_LAST_8_AVX, GHASH_MUL_AVX, DEC, 9 FUNC_RESTORE - ret + RET key_256_dec_update: GCM_ENC_DEC INITIAL_BLOCKS_AVX, GHASH_8_ENCRYPT_8_PARALLEL_AVX, GHASH_LAST_8_AVX, GHASH_MUL_AVX, DEC, 13 FUNC_RESTORE - ret + RET SYM_FUNC_END(aesni_gcm_dec_update_avx_gen2) ############################################################################### @@ -1846,15 +1846,15 @@ SYM_FUNC_START(aesni_gcm_finalize_avx_ge # must be 192 GCM_COMPLETE GHASH_MUL_AVX, 11, arg3, arg4 FUNC_RESTORE - ret + RET key_128_finalize: GCM_COMPLETE GHASH_MUL_AVX, 9, arg3, arg4 FUNC_RESTORE - ret + RET key_256_finalize: GCM_COMPLETE GHASH_MUL_AVX, 13, arg3, arg4 FUNC_RESTORE - ret + RET SYM_FUNC_END(aesni_gcm_finalize_avx_gen2) ############################################################################### @@ -2735,7 +2735,7 @@ SYM_FUNC_START(aesni_gcm_init_avx_gen4) FUNC_SAVE INIT GHASH_MUL_AVX2, PRECOMPUTE_AVX2 FUNC_RESTORE - ret + RET SYM_FUNC_END(aesni_gcm_init_avx_gen4) ############################################################################### @@ -2756,15 +2756,15 @@ SYM_FUNC_START(aesni_gcm_enc_update_avx_ # must be 192 GCM_ENC_DEC INITIAL_BLOCKS_AVX2, GHASH_8_ENCRYPT_8_PARALLEL_AVX2, GHASH_LAST_8_AVX2, GHASH_MUL_AVX2, ENC, 11 FUNC_RESTORE - ret + RET key_128_enc_update4: GCM_ENC_DEC INITIAL_BLOCKS_AVX2, GHASH_8_ENCRYPT_8_PARALLEL_AVX2, GHASH_LAST_8_AVX2, GHASH_MUL_AVX2, ENC, 9 FUNC_RESTORE - ret + RET key_256_enc_update4: GCM_ENC_DEC INITIAL_BLOCKS_AVX2, GHASH_8_ENCRYPT_8_PARALLEL_AVX2, GHASH_LAST_8_AVX2, GHASH_MUL_AVX2, ENC, 13 FUNC_RESTORE - ret + RET SYM_FUNC_END(aesni_gcm_enc_update_avx_gen4) ############################################################################### @@ -2785,15 +2785,15 @@ SYM_FUNC_START(aesni_gcm_dec_update_avx_ # must be 192 GCM_ENC_DEC INITIAL_BLOCKS_AVX2, GHASH_8_ENCRYPT_8_PARALLEL_AVX2, GHASH_LAST_8_AVX2, GHASH_MUL_AVX2, DEC, 11 FUNC_RESTORE - ret + RET key_128_dec_update4: GCM_ENC_DEC INITIAL_BLOCKS_AVX2, GHASH_8_ENCRYPT_8_PARALLEL_AVX2, GHASH_LAST_8_AVX2, GHASH_MUL_AVX2, DEC, 9 FUNC_RESTORE - ret + RET key_256_dec_update4: GCM_ENC_DEC INITIAL_BLOCKS_AVX2, GHASH_8_ENCRYPT_8_PARALLEL_AVX2, GHASH_LAST_8_AVX2, GHASH_MUL_AVX2, DEC, 13 FUNC_RESTORE - ret + RET SYM_FUNC_END(aesni_gcm_dec_update_avx_gen4) ############################################################################### @@ -2814,13 +2814,13 @@ SYM_FUNC_START(aesni_gcm_finalize_avx_ge # must be 192 GCM_COMPLETE GHASH_MUL_AVX2, 11, arg3, arg4 FUNC_RESTORE - ret + RET key_128_finalize4: GCM_COMPLETE GHASH_MUL_AVX2, 9, arg3, arg4 FUNC_RESTORE - ret + RET key_256_finalize4: GCM_COMPLETE GHASH_MUL_AVX2, 13, arg3, arg4 FUNC_RESTORE - ret + RET SYM_FUNC_END(aesni_gcm_finalize_avx_gen4) --- a/arch/x86/crypto/blake2s-core.S +++ b/arch/x86/crypto/blake2s-core.S @@ -171,7 +171,7 @@ SYM_FUNC_START(blake2s_compress_ssse3) movdqu %xmm1,0x10(%rdi) movdqu %xmm14,0x20(%rdi) .Lendofloop: - ret + RET SYM_FUNC_END(blake2s_compress_ssse3) #ifdef CONFIG_AS_AVX512 @@ -251,6 +251,6 @@ SYM_FUNC_START(blake2s_compress_avx512) vmovdqu %xmm1,0x10(%rdi) vmovdqu %xmm4,0x20(%rdi) vzeroupper - retq + RET SYM_FUNC_END(blake2s_compress_avx512) #endif /* CONFIG_AS_AVX512 */ --- a/arch/x86/crypto/blowfish-x86_64-asm_64.S +++ b/arch/x86/crypto/blowfish-x86_64-asm_64.S @@ -135,10 +135,10 @@ SYM_FUNC_START(__blowfish_enc_blk) jnz .L__enc_xor; write_block(); - ret; + RET; .L__enc_xor: xor_block(); - ret; + RET; SYM_FUNC_END(__blowfish_enc_blk) SYM_FUNC_START(blowfish_dec_blk) @@ -170,7 +170,7 @@ SYM_FUNC_START(blowfish_dec_blk) movq %r11, %r12; - ret; + RET; SYM_FUNC_END(blowfish_dec_blk) /********************************************************************** @@ -322,14 +322,14 @@ SYM_FUNC_START(__blowfish_enc_blk_4way) popq %rbx; popq %r12; - ret; + RET; .L__enc_xor4: xor_block4(); popq %rbx; popq %r12; - ret; + RET; SYM_FUNC_END(__blowfish_enc_blk_4way) SYM_FUNC_START(blowfish_dec_blk_4way) @@ -364,5 +364,5 @@ SYM_FUNC_START(blowfish_dec_blk_4way) popq %rbx; popq %r12; - ret; + RET; SYM_FUNC_END(blowfish_dec_blk_4way) --- a/arch/x86/crypto/camellia-aesni-avx-asm_64.S +++ b/arch/x86/crypto/camellia-aesni-avx-asm_64.S @@ -192,7 +192,7 @@ SYM_FUNC_START_LOCAL(roundsm16_x0_x1_x2_ roundsm16(%xmm0, %xmm1, %xmm2, %xmm3, %xmm4, %xmm5, %xmm6, %xmm7, %xmm8, %xmm9, %xmm10, %xmm11, %xmm12, %xmm13, %xmm14, %xmm15, %rcx, (%r9)); - ret; + RET; SYM_FUNC_END(roundsm16_x0_x1_x2_x3_x4_x5_x6_x7_y0_y1_y2_y3_y4_y5_y6_y7_cd) .align 8 @@ -200,7 +200,7 @@ SYM_FUNC_START_LOCAL(roundsm16_x4_x5_x6_ roundsm16(%xmm4, %xmm5, %xmm6, %xmm7, %xmm0, %xmm1, %xmm2, %xmm3, %xmm12, %xmm13, %xmm14, %xmm15, %xmm8, %xmm9, %xmm10, %xmm11, %rax, (%r9)); - ret; + RET; SYM_FUNC_END(roundsm16_x4_x5_x6_x7_x0_x1_x2_x3_y4_y5_y6_y7_y0_y1_y2_y3_ab) /* @@ -778,7 +778,7 @@ SYM_FUNC_START_LOCAL(__camellia_enc_blk1 %xmm15, (key_table)(CTX, %r8, 8), (%rax), 1 * 16(%rax)); FRAME_END - ret; + RET; .align 8 .Lenc_max32: @@ -865,7 +865,7 @@ SYM_FUNC_START_LOCAL(__camellia_dec_blk1 %xmm15, (key_table)(CTX), (%rax), 1 * 16(%rax)); FRAME_END - ret; + RET; .align 8 .Ldec_max32: @@ -906,7 +906,7 @@ SYM_FUNC_START(camellia_ecb_enc_16way) %xmm8, %rsi); FRAME_END - ret; + RET; SYM_FUNC_END(camellia_ecb_enc_16way) SYM_FUNC_START(camellia_ecb_dec_16way) @@ -936,7 +936,7 @@ SYM_FUNC_START(camellia_ecb_dec_16way) %xmm8, %rsi); FRAME_END - ret; + RET; SYM_FUNC_END(camellia_ecb_dec_16way) SYM_FUNC_START(camellia_cbc_dec_16way) @@ -987,5 +987,5 @@ SYM_FUNC_START(camellia_cbc_dec_16way) %xmm8, %rsi); FRAME_END - ret; + RET; SYM_FUNC_END(camellia_cbc_dec_16way) --- a/arch/x86/crypto/camellia-aesni-avx2-asm_64.S +++ b/arch/x86/crypto/camellia-aesni-avx2-asm_64.S @@ -226,7 +226,7 @@ SYM_FUNC_START_LOCAL(roundsm32_x0_x1_x2_ roundsm32(%ymm0, %ymm1, %ymm2, %ymm3, %ymm4, %ymm5, %ymm6, %ymm7, %ymm8, %ymm9, %ymm10, %ymm11, %ymm12, %ymm13, %ymm14, %ymm15, %rcx, (%r9)); - ret; + RET; SYM_FUNC_END(roundsm32_x0_x1_x2_x3_x4_x5_x6_x7_y0_y1_y2_y3_y4_y5_y6_y7_cd) .align 8 @@ -234,7 +234,7 @@ SYM_FUNC_START_LOCAL(roundsm32_x4_x5_x6_ roundsm32(%ymm4, %ymm5, %ymm6, %ymm7, %ymm0, %ymm1, %ymm2, %ymm3, %ymm12, %ymm13, %ymm14, %ymm15, %ymm8, %ymm9, %ymm10, %ymm11, %rax, (%r9)); - ret; + RET; SYM_FUNC_END(roundsm32_x4_x5_x6_x7_x0_x1_x2_x3_y4_y5_y6_y7_y0_y1_y2_y3_ab) /* @@ -814,7 +814,7 @@ SYM_FUNC_START_LOCAL(__camellia_enc_blk3 %ymm15, (key_table)(CTX, %r8, 8), (%rax), 1 * 32(%rax)); FRAME_END - ret; + RET; .align 8 .Lenc_max32: @@ -901,7 +901,7 @@ SYM_FUNC_START_LOCAL(__camellia_dec_blk3 %ymm15, (key_table)(CTX), (%rax), 1 * 32(%rax)); FRAME_END - ret; + RET; .align 8 .Ldec_max32: @@ -946,7 +946,7 @@ SYM_FUNC_START(camellia_ecb_enc_32way) vzeroupper; FRAME_END - ret; + RET; SYM_FUNC_END(camellia_ecb_enc_32way) SYM_FUNC_START(camellia_ecb_dec_32way) @@ -980,7 +980,7 @@ SYM_FUNC_START(camellia_ecb_dec_32way) vzeroupper; FRAME_END - ret; + RET; SYM_FUNC_END(camellia_ecb_dec_32way) SYM_FUNC_START(camellia_cbc_dec_32way) @@ -1047,5 +1047,5 @@ SYM_FUNC_START(camellia_cbc_dec_32way) addq $(16 * 32), %rsp; FRAME_END - ret; + RET; SYM_FUNC_END(camellia_cbc_dec_32way) --- a/arch/x86/crypto/camellia-x86_64-asm_64.S +++ b/arch/x86/crypto/camellia-x86_64-asm_64.S @@ -213,13 +213,13 @@ SYM_FUNC_START(__camellia_enc_blk) enc_outunpack(mov, RT1); movq RR12, %r12; - ret; + RET; .L__enc_xor: enc_outunpack(xor, RT1); movq RR12, %r12; - ret; + RET; SYM_FUNC_END(__camellia_enc_blk) SYM_FUNC_START(camellia_dec_blk) @@ -257,7 +257,7 @@ SYM_FUNC_START(camellia_dec_blk) dec_outunpack(); movq RR12, %r12; - ret; + RET; SYM_FUNC_END(camellia_dec_blk) /********************************************************************** @@ -448,14 +448,14 @@ SYM_FUNC_START(__camellia_enc_blk_2way) movq RR12, %r12; popq %rbx; - ret; + RET; .L__enc2_xor: enc_outunpack2(xor, RT2); movq RR12, %r12; popq %rbx; - ret; + RET; SYM_FUNC_END(__camellia_enc_blk_2way) SYM_FUNC_START(camellia_dec_blk_2way) @@ -495,5 +495,5 @@ SYM_FUNC_START(camellia_dec_blk_2way) movq RR12, %r12; movq RXOR, %rbx; - ret; + RET; SYM_FUNC_END(camellia_dec_blk_2way) --- a/arch/x86/crypto/cast5-avx-x86_64-asm_64.S +++ b/arch/x86/crypto/cast5-avx-x86_64-asm_64.S @@ -279,7 +279,7 @@ SYM_FUNC_START_LOCAL(__cast5_enc_blk16) outunpack_blocks(RR3, RL3, RTMP, RX, RKM); outunpack_blocks(RR4, RL4, RTMP, RX, RKM); - ret; + RET; SYM_FUNC_END(__cast5_enc_blk16) .align 16 @@ -352,7 +352,7 @@ SYM_FUNC_START_LOCAL(__cast5_dec_blk16) outunpack_blocks(RR3, RL3, RTMP, RX, RKM); outunpack_blocks(RR4, RL4, RTMP, RX, RKM); - ret; + RET; .L__skip_dec: vpsrldq $4, RKR, RKR; @@ -393,7 +393,7 @@ SYM_FUNC_START(cast5_ecb_enc_16way) popq %r15; FRAME_END - ret; + RET; SYM_FUNC_END(cast5_ecb_enc_16way) SYM_FUNC_START(cast5_ecb_dec_16way) @@ -431,7 +431,7 @@ SYM_FUNC_START(cast5_ecb_dec_16way) popq %r15; FRAME_END - ret; + RET; SYM_FUNC_END(cast5_ecb_dec_16way) SYM_FUNC_START(cast5_cbc_dec_16way) @@ -483,7 +483,7 @@ SYM_FUNC_START(cast5_cbc_dec_16way) popq %r15; popq %r12; FRAME_END - ret; + RET; SYM_FUNC_END(cast5_cbc_dec_16way) SYM_FUNC_START(cast5_ctr_16way) @@ -559,5 +559,5 @@ SYM_FUNC_START(cast5_ctr_16way) popq %r15; popq %r12; FRAME_END - ret; + RET; SYM_FUNC_END(cast5_ctr_16way) --- a/arch/x86/crypto/cast6-avx-x86_64-asm_64.S +++ b/arch/x86/crypto/cast6-avx-x86_64-asm_64.S @@ -289,7 +289,7 @@ SYM_FUNC_START_LOCAL(__cast6_enc_blk8) outunpack_blocks(RA1, RB1, RC1, RD1, RTMP, RX, RKRF, RKM); outunpack_blocks(RA2, RB2, RC2, RD2, RTMP, RX, RKRF, RKM); - ret; + RET; SYM_FUNC_END(__cast6_enc_blk8) .align 8 @@ -336,7 +336,7 @@ SYM_FUNC_START_LOCAL(__cast6_dec_blk8) outunpack_blocks(RA1, RB1, RC1, RD1, RTMP, RX, RKRF, RKM); outunpack_blocks(RA2, RB2, RC2, RD2, RTMP, RX, RKRF, RKM); - ret; + RET; SYM_FUNC_END(__cast6_dec_blk8) SYM_FUNC_START(cast6_ecb_enc_8way) @@ -359,7 +359,7 @@ SYM_FUNC_START(cast6_ecb_enc_8way) popq %r15; FRAME_END - ret; + RET; SYM_FUNC_END(cast6_ecb_enc_8way) SYM_FUNC_START(cast6_ecb_dec_8way) @@ -382,7 +382,7 @@ SYM_FUNC_START(cast6_ecb_dec_8way) popq %r15; FRAME_END - ret; + RET; SYM_FUNC_END(cast6_ecb_dec_8way) SYM_FUNC_START(cast6_cbc_dec_8way) @@ -408,5 +408,5 @@ SYM_FUNC_START(cast6_cbc_dec_8way) popq %r15; popq %r12; FRAME_END - ret; + RET; SYM_FUNC_END(cast6_cbc_dec_8way) --- a/arch/x86/crypto/chacha-avx2-x86_64.S +++ b/arch/x86/crypto/chacha-avx2-x86_64.S @@ -193,7 +193,7 @@ SYM_FUNC_START(chacha_2block_xor_avx2) .Ldone2: vzeroupper - ret + RET .Lxorpart2: # xor remaining bytes from partial register into output @@ -498,7 +498,7 @@ SYM_FUNC_START(chacha_4block_xor_avx2) .Ldone4: vzeroupper - ret + RET .Lxorpart4: # xor remaining bytes from partial register into output @@ -992,7 +992,7 @@ SYM_FUNC_START(chacha_8block_xor_avx2) .Ldone8: vzeroupper lea -8(%r10),%rsp - ret + RET .Lxorpart8: # xor remaining bytes from partial register into output --- a/arch/x86/crypto/chacha-avx512vl-x86_64.S +++ b/arch/x86/crypto/chacha-avx512vl-x86_64.S @@ -166,7 +166,7 @@ SYM_FUNC_START(chacha_2block_xor_avx512v .Ldone2: vzeroupper - ret + RET .Lxorpart2: # xor remaining bytes from partial register into output @@ -432,7 +432,7 @@ SYM_FUNC_START(chacha_4block_xor_avx512v .Ldone4: vzeroupper - ret + RET .Lxorpart4: # xor remaining bytes from partial register into output @@ -812,7 +812,7 @@ SYM_FUNC_START(chacha_8block_xor_avx512v .Ldone8: vzeroupper - ret + RET .Lxorpart8: # xor remaining bytes from partial register into output --- a/arch/x86/crypto/chacha-ssse3-x86_64.S +++ b/arch/x86/crypto/chacha-ssse3-x86_64.S @@ -108,7 +108,7 @@ SYM_FUNC_START_LOCAL(chacha_permute) sub $2,%r8d jnz .Ldoubleround - ret + RET SYM_FUNC_END(chacha_permute) SYM_FUNC_START(chacha_block_xor_ssse3) @@ -166,7 +166,7 @@ SYM_FUNC_START(chacha_block_xor_ssse3) .Ldone: FRAME_END - ret + RET .Lxorpart: # xor remaining bytes from partial register into output @@ -217,7 +217,7 @@ SYM_FUNC_START(hchacha_block_ssse3) movdqu %xmm3,0x10(%rsi) FRAME_END - ret + RET SYM_FUNC_END(hchacha_block_ssse3) SYM_FUNC_START(chacha_4block_xor_ssse3) @@ -762,7 +762,7 @@ SYM_FUNC_START(chacha_4block_xor_ssse3) .Ldone4: lea -8(%r10),%rsp - ret + RET .Lxorpart4: # xor remaining bytes from partial register into output --- a/arch/x86/crypto/crc32-pclmul_asm.S +++ b/arch/x86/crypto/crc32-pclmul_asm.S @@ -236,5 +236,5 @@ loop_16:/* Folding rest buffer into 128b pxor %xmm2, %xmm1 pextrd $0x01, %xmm1, %eax - ret + RET SYM_FUNC_END(crc32_pclmul_le_16) --- a/arch/x86/crypto/crc32c-pcl-intel-asm_64.S +++ b/arch/x86/crypto/crc32c-pcl-intel-asm_64.S @@ -306,7 +306,7 @@ less_than_1: # Length should be zero popq %rsi popq %rdi popq %rbx - ret + RET SYM_FUNC_END(crc_pcl) .section .rodata, "a", @progbits --- a/arch/x86/crypto/crct10dif-pcl-asm_64.S +++ b/arch/x86/crypto/crct10dif-pcl-asm_64.S @@ -257,7 +257,7 @@ SYM_FUNC_START(crc_t10dif_pcl) # Final CRC value (x^16 * M(x)) mod G(x) is in low 16 bits of xmm0. pextrw $0, %xmm0, %eax - ret + RET .align 16 .Lless_than_256_bytes: --- a/arch/x86/crypto/des3_ede-asm_64.S +++ b/arch/x86/crypto/des3_ede-asm_64.S @@ -243,7 +243,7 @@ SYM_FUNC_START(des3_ede_x86_64_crypt_blk popq %r12; popq %rbx; - ret; + RET; SYM_FUNC_END(des3_ede_x86_64_crypt_blk) /*********************************************************************** @@ -528,7 +528,7 @@ SYM_FUNC_START(des3_ede_x86_64_crypt_blk popq %r12; popq %rbx; - ret; + RET; SYM_FUNC_END(des3_ede_x86_64_crypt_blk_3way) .section .rodata, "a", @progbits --- a/arch/x86/crypto/ghash-clmulni-intel_asm.S +++ b/arch/x86/crypto/ghash-clmulni-intel_asm.S @@ -85,7 +85,7 @@ SYM_FUNC_START_LOCAL(__clmul_gf128mul_bl psrlq $1, T2 pxor T2, T1 pxor T1, DATA - ret + RET SYM_FUNC_END(__clmul_gf128mul_ble) /* void clmul_ghash_mul(char *dst, const u128 *shash) */ @@ -99,7 +99,7 @@ SYM_FUNC_START(clmul_ghash_mul) pshufb BSWAP, DATA movups DATA, (%rdi) FRAME_END - ret + RET SYM_FUNC_END(clmul_ghash_mul) /* @@ -128,5 +128,5 @@ SYM_FUNC_START(clmul_ghash_update) movups DATA, (%rdi) .Lupdate_just_ret: FRAME_END - ret + RET SYM_FUNC_END(clmul_ghash_update) --- a/arch/x86/crypto/nh-avx2-x86_64.S +++ b/arch/x86/crypto/nh-avx2-x86_64.S @@ -153,5 +153,5 @@ SYM_FUNC_START(nh_avx2) vpaddq T1, T0, T0 vpaddq T4, T0, T0 vmovdqu T0, (HASH) - ret + RET SYM_FUNC_END(nh_avx2) --- a/arch/x86/crypto/nh-sse2-x86_64.S +++ b/arch/x86/crypto/nh-sse2-x86_64.S @@ -119,5 +119,5 @@ SYM_FUNC_START(nh_sse2) paddq PASS2_SUMS, T1 movdqu T0, 0x00(HASH) movdqu T1, 0x10(HASH) - ret + RET SYM_FUNC_END(nh_sse2) --- a/arch/x86/crypto/poly1305-x86_64-cryptogams.pl +++ b/arch/x86/crypto/poly1305-x86_64-cryptogams.pl @@ -297,7 +297,7 @@ ___ $code.=<<___; mov \$1,%eax .Lno_key: - ret + RET ___ &end_function("poly1305_init_x86_64"); @@ -373,7 +373,7 @@ $code.=<<___; .cfi_adjust_cfa_offset -48 .Lno_data: .Lblocks_epilogue: - ret + RET .cfi_endproc ___ &end_function("poly1305_blocks_x86_64"); @@ -399,7 +399,7 @@ $code.=<<___; mov %rax,0($mac) # write result mov %rcx,8($mac) - ret + RET ___ &end_function("poly1305_emit_x86_64"); if ($avx) { @@ -429,7 +429,7 @@ ___ &poly1305_iteration(); $code.=<<___; pop $ctx - ret + RET .size __poly1305_block,.-__poly1305_block .type __poly1305_init_avx,\@abi-omnipotent @@ -594,7 +594,7 @@ $code.=<<___; lea -48-64($ctx),$ctx # size [de-]optimization pop %rbp - ret + RET .size __poly1305_init_avx,.-__poly1305_init_avx ___ @@ -747,7 +747,7 @@ $code.=<<___; .cfi_restore %rbp .Lno_data_avx: .Lblocks_avx_epilogue: - ret + RET .cfi_endproc .align 32 @@ -1452,7 +1452,7 @@ $code.=<<___ if (!$win64); ___ $code.=<<___; vzeroupper - ret + RET .cfi_endproc ___ &end_function("poly1305_blocks_avx"); @@ -1508,7 +1508,7 @@ $code.=<<___; mov %rax,0($mac) # write result mov %rcx,8($mac) - ret + RET ___ &end_function("poly1305_emit_avx"); @@ -1675,7 +1675,7 @@ $code.=<<___; .cfi_restore %rbp .Lno_data_avx2$suffix: .Lblocks_avx2_epilogue$suffix: - ret + RET .cfi_endproc .align 32 @@ -2201,7 +2201,7 @@ $code.=<<___ if (!$win64); ___ $code.=<<___; vzeroupper - ret + RET .cfi_endproc ___ if($avx > 2 && $avx512) { @@ -2792,7 +2792,7 @@ $code.=<<___ if (!$win64); .cfi_def_cfa_register %rsp ___ $code.=<<___; - ret + RET .cfi_endproc ___ @@ -2893,7 +2893,7 @@ $code.=<<___ if ($flavour =~ /elf32/); ___ $code.=<<___; mov \$1,%eax - ret + RET .size poly1305_init_base2_44,.-poly1305_init_base2_44 ___ { @@ -3010,7 +3010,7 @@ $code.=<<___; jnz .Lblocks_vpmadd52_4x .Lno_data_vpmadd52: - ret + RET .size poly1305_blocks_vpmadd52,.-poly1305_blocks_vpmadd52 ___ } @@ -3451,7 +3451,7 @@ $code.=<<___; vzeroall .Lno_data_vpmadd52_4x: - ret + RET .size poly1305_blocks_vpmadd52_4x,.-poly1305_blocks_vpmadd52_4x ___ } @@ -3824,7 +3824,7 @@ $code.=<<___; vzeroall .Lno_data_vpmadd52_8x: - ret + RET .size poly1305_blocks_vpmadd52_8x,.-poly1305_blocks_vpmadd52_8x ___ } @@ -3861,7 +3861,7 @@ $code.=<<___; mov %rax,0($mac) # write result mov %rcx,8($mac) - ret + RET .size poly1305_emit_base2_44,.-poly1305_emit_base2_44 ___ } } } @@ -3916,7 +3916,7 @@ $code.=<<___; .Ldone_enc: mov $otp,%rax - ret + RET .size xor128_encrypt_n_pad,.-xor128_encrypt_n_pad .globl xor128_decrypt_n_pad @@ -3967,7 +3967,7 @@ $code.=<<___; .Ldone_dec: mov $otp,%rax - ret + RET .size xor128_decrypt_n_pad,.-xor128_decrypt_n_pad ___ } @@ -4109,7 +4109,7 @@ $code.=<<___; pop %rbx pop %rdi pop %rsi - ret + RET .size avx_handler,.-avx_handler .section .pdata --- a/arch/x86/crypto/serpent-avx-x86_64-asm_64.S +++ b/arch/x86/crypto/serpent-avx-x86_64-asm_64.S @@ -601,7 +601,7 @@ SYM_FUNC_START_LOCAL(__serpent_enc_blk8_ write_blocks(RA1, RB1, RC1, RD1, RK0, RK1, RK2); write_blocks(RA2, RB2, RC2, RD2, RK0, RK1, RK2); - ret; + RET; SYM_FUNC_END(__serpent_enc_blk8_avx) .align 8 @@ -655,7 +655,7 @@ SYM_FUNC_START_LOCAL(__serpent_dec_blk8_ write_blocks(RC1, RD1, RB1, RE1, RK0, RK1, RK2); write_blocks(RC2, RD2, RB2, RE2, RK0, RK1, RK2); - ret; + RET; SYM_FUNC_END(__serpent_dec_blk8_avx) SYM_FUNC_START(serpent_ecb_enc_8way_avx) @@ -673,7 +673,7 @@ SYM_FUNC_START(serpent_ecb_enc_8way_avx) store_8way(%rsi, RA1, RB1, RC1, RD1, RA2, RB2, RC2, RD2); FRAME_END - ret; + RET; SYM_FUNC_END(serpent_ecb_enc_8way_avx) SYM_FUNC_START(serpent_ecb_dec_8way_avx) @@ -691,7 +691,7 @@ SYM_FUNC_START(serpent_ecb_dec_8way_avx) store_8way(%rsi, RC1, RD1, RB1, RE1, RC2, RD2, RB2, RE2); FRAME_END - ret; + RET; SYM_FUNC_END(serpent_ecb_dec_8way_avx) SYM_FUNC_START(serpent_cbc_dec_8way_avx) @@ -709,5 +709,5 @@ SYM_FUNC_START(serpent_cbc_dec_8way_avx) store_cbc_8way(%rdx, %rsi, RC1, RD1, RB1, RE1, RC2, RD2, RB2, RE2); FRAME_END - ret; + RET; SYM_FUNC_END(serpent_cbc_dec_8way_avx) --- a/arch/x86/crypto/serpent-avx2-asm_64.S +++ b/arch/x86/crypto/serpent-avx2-asm_64.S @@ -601,7 +601,7 @@ SYM_FUNC_START_LOCAL(__serpent_enc_blk16 write_blocks(RA1, RB1, RC1, RD1, RK0, RK1, RK2); write_blocks(RA2, RB2, RC2, RD2, RK0, RK1, RK2); - ret; + RET; SYM_FUNC_END(__serpent_enc_blk16) .align 8 @@ -655,7 +655,7 @@ SYM_FUNC_START_LOCAL(__serpent_dec_blk16 write_blocks(RC1, RD1, RB1, RE1, RK0, RK1, RK2); write_blocks(RC2, RD2, RB2, RE2, RK0, RK1, RK2); - ret; + RET; SYM_FUNC_END(__serpent_dec_blk16) SYM_FUNC_START(serpent_ecb_enc_16way) @@ -677,7 +677,7 @@ SYM_FUNC_START(serpent_ecb_enc_16way) vzeroupper; FRAME_END - ret; + RET; SYM_FUNC_END(serpent_ecb_enc_16way) SYM_FUNC_START(serpent_ecb_dec_16way) @@ -699,7 +699,7 @@ SYM_FUNC_START(serpent_ecb_dec_16way) vzeroupper; FRAME_END - ret; + RET; SYM_FUNC_END(serpent_ecb_dec_16way) SYM_FUNC_START(serpent_cbc_dec_16way) @@ -722,5 +722,5 @@ SYM_FUNC_START(serpent_cbc_dec_16way) vzeroupper; FRAME_END - ret; + RET; SYM_FUNC_END(serpent_cbc_dec_16way) --- a/arch/x86/crypto/serpent-sse2-i586-asm_32.S +++ b/arch/x86/crypto/serpent-sse2-i586-asm_32.S @@ -553,12 +553,12 @@ SYM_FUNC_START(__serpent_enc_blk_4way) write_blocks(%eax, RA, RB, RC, RD, RT0, RT1, RE); - ret; + RET; .L__enc_xor4: xor_blocks(%eax, RA, RB, RC, RD, RT0, RT1, RE); - ret; + RET; SYM_FUNC_END(__serpent_enc_blk_4way) SYM_FUNC_START(serpent_dec_blk_4way) @@ -612,5 +612,5 @@ SYM_FUNC_START(serpent_dec_blk_4way) movl arg_dst(%esp), %eax; write_blocks(%eax, RC, RD, RB, RE, RT0, RT1, RA); - ret; + RET; SYM_FUNC_END(serpent_dec_blk_4way) --- a/arch/x86/crypto/serpent-sse2-x86_64-asm_64.S +++ b/arch/x86/crypto/serpent-sse2-x86_64-asm_64.S @@ -675,13 +675,13 @@ SYM_FUNC_START(__serpent_enc_blk_8way) write_blocks(%rsi, RA1, RB1, RC1, RD1, RK0, RK1, RK2); write_blocks(%rax, RA2, RB2, RC2, RD2, RK0, RK1, RK2); - ret; + RET; .L__enc_xor8: xor_blocks(%rsi, RA1, RB1, RC1, RD1, RK0, RK1, RK2); xor_blocks(%rax, RA2, RB2, RC2, RD2, RK0, RK1, RK2); - ret; + RET; SYM_FUNC_END(__serpent_enc_blk_8way) SYM_FUNC_START(serpent_dec_blk_8way) @@ -735,5 +735,5 @@ SYM_FUNC_START(serpent_dec_blk_8way) write_blocks(%rsi, RC1, RD1, RB1, RE1, RK0, RK1, RK2); write_blocks(%rax, RC2, RD2, RB2, RE2, RK0, RK1, RK2); - ret; + RET; SYM_FUNC_END(serpent_dec_blk_8way) --- a/arch/x86/crypto/sha1_avx2_x86_64_asm.S +++ b/arch/x86/crypto/sha1_avx2_x86_64_asm.S @@ -674,7 +674,7 @@ pop %r12 pop %rbx - ret + RET SYM_FUNC_END(\name) .endm --- a/arch/x86/crypto/sha1_ni_asm.S +++ b/arch/x86/crypto/sha1_ni_asm.S @@ -290,7 +290,7 @@ SYM_FUNC_START(sha1_ni_transform) mov %rbp, %rsp pop %rbp - ret + RET SYM_FUNC_END(sha1_ni_transform) .section .rodata.cst16.PSHUFFLE_BYTE_FLIP_MASK, "aM", @progbits, 16 --- a/arch/x86/crypto/sha1_ssse3_asm.S +++ b/arch/x86/crypto/sha1_ssse3_asm.S @@ -99,7 +99,7 @@ pop %rbp pop %r12 pop %rbx - ret + RET SYM_FUNC_END(\name) .endm --- a/arch/x86/crypto/sha256-avx-asm.S +++ b/arch/x86/crypto/sha256-avx-asm.S @@ -458,7 +458,7 @@ SYM_FUNC_START(sha256_transform_avx) popq %r13 popq %r12 popq %rbx - ret + RET SYM_FUNC_END(sha256_transform_avx) .section .rodata.cst256.K256, "aM", @progbits, 256 --- a/arch/x86/crypto/sha256-avx2-asm.S +++ b/arch/x86/crypto/sha256-avx2-asm.S @@ -710,7 +710,7 @@ SYM_FUNC_START(sha256_transform_rorx) popq %r13 popq %r12 popq %rbx - ret + RET SYM_FUNC_END(sha256_transform_rorx) .section .rodata.cst512.K256, "aM", @progbits, 512 --- a/arch/x86/crypto/sha256-ssse3-asm.S +++ b/arch/x86/crypto/sha256-ssse3-asm.S @@ -472,7 +472,7 @@ SYM_FUNC_START(sha256_transform_ssse3) popq %r12 popq %rbx - ret + RET SYM_FUNC_END(sha256_transform_ssse3) .section .rodata.cst256.K256, "aM", @progbits, 256 --- a/arch/x86/crypto/sha256_ni_asm.S +++ b/arch/x86/crypto/sha256_ni_asm.S @@ -326,7 +326,7 @@ SYM_FUNC_START(sha256_ni_transform) .Ldone_hash: - ret + RET SYM_FUNC_END(sha256_ni_transform) .section .rodata.cst256.K256, "aM", @progbits, 256 --- a/arch/x86/crypto/sha512-avx-asm.S +++ b/arch/x86/crypto/sha512-avx-asm.S @@ -361,7 +361,7 @@ SYM_FUNC_START(sha512_transform_avx) pop %rbx nowork: - ret + RET SYM_FUNC_END(sha512_transform_avx) ######################################################################## --- a/arch/x86/crypto/sha512-avx2-asm.S +++ b/arch/x86/crypto/sha512-avx2-asm.S @@ -679,7 +679,7 @@ SYM_FUNC_START(sha512_transform_rorx) pop %r12 pop %rbx - ret + RET SYM_FUNC_END(sha512_transform_rorx) ######################################################################## --- a/arch/x86/crypto/sha512-ssse3-asm.S +++ b/arch/x86/crypto/sha512-ssse3-asm.S @@ -363,7 +363,7 @@ SYM_FUNC_START(sha512_transform_ssse3) pop %rbx nowork: - ret + RET SYM_FUNC_END(sha512_transform_ssse3) ######################################################################## --- a/arch/x86/crypto/sm4-aesni-avx-asm_64.S +++ b/arch/x86/crypto/sm4-aesni-avx-asm_64.S @@ -246,7 +246,7 @@ SYM_FUNC_START(sm4_aesni_avx_crypt4) .Lblk4_store_output_done: vzeroall; FRAME_END - ret; + RET; SYM_FUNC_END(sm4_aesni_avx_crypt4) .align 8 @@ -356,7 +356,7 @@ SYM_FUNC_START_LOCAL(__sm4_crypt_blk8) vpshufb RTMP2, RB3, RB3; FRAME_END - ret; + RET; SYM_FUNC_END(__sm4_crypt_blk8) /* @@ -412,7 +412,7 @@ SYM_FUNC_START(sm4_aesni_avx_crypt8) .Lblk8_store_output_done: vzeroall; FRAME_END - ret; + RET; SYM_FUNC_END(sm4_aesni_avx_crypt8) /* @@ -487,7 +487,7 @@ SYM_FUNC_START(sm4_aesni_avx_ctr_enc_blk vzeroall; FRAME_END - ret; + RET; SYM_FUNC_END(sm4_aesni_avx_ctr_enc_blk8) /* @@ -537,7 +537,7 @@ SYM_FUNC_START(sm4_aesni_avx_cbc_dec_blk vzeroall; FRAME_END - ret; + RET; SYM_FUNC_END(sm4_aesni_avx_cbc_dec_blk8) /* @@ -590,5 +590,5 @@ SYM_FUNC_START(sm4_aesni_avx_cfb_dec_blk vzeroall; FRAME_END - ret; + RET; SYM_FUNC_END(sm4_aesni_avx_cfb_dec_blk8) --- a/arch/x86/crypto/sm4-aesni-avx2-asm_64.S +++ b/arch/x86/crypto/sm4-aesni-avx2-asm_64.S @@ -268,7 +268,7 @@ SYM_FUNC_START_LOCAL(__sm4_crypt_blk16) vpshufb RTMP2, RB3, RB3; FRAME_END - ret; + RET; SYM_FUNC_END(__sm4_crypt_blk16) #define inc_le128(x, minus_one, tmp) \ @@ -387,7 +387,7 @@ SYM_FUNC_START(sm4_aesni_avx2_ctr_enc_bl vzeroall; FRAME_END - ret; + RET; SYM_FUNC_END(sm4_aesni_avx2_ctr_enc_blk16) /* @@ -441,7 +441,7 @@ SYM_FUNC_START(sm4_aesni_avx2_cbc_dec_bl vzeroall; FRAME_END - ret; + RET; SYM_FUNC_END(sm4_aesni_avx2_cbc_dec_blk16) /* @@ -497,5 +497,5 @@ SYM_FUNC_START(sm4_aesni_avx2_cfb_dec_bl vzeroall; FRAME_END - ret; + RET; SYM_FUNC_END(sm4_aesni_avx2_cfb_dec_blk16) --- a/arch/x86/crypto/twofish-avx-x86_64-asm_64.S +++ b/arch/x86/crypto/twofish-avx-x86_64-asm_64.S @@ -267,7 +267,7 @@ SYM_FUNC_START_LOCAL(__twofish_enc_blk8) outunpack_blocks(RC1, RD1, RA1, RB1, RK1, RX0, RY0, RK2); outunpack_blocks(RC2, RD2, RA2, RB2, RK1, RX0, RY0, RK2); - ret; + RET; SYM_FUNC_END(__twofish_enc_blk8) .align 8 @@ -307,7 +307,7 @@ SYM_FUNC_START_LOCAL(__twofish_dec_blk8) outunpack_blocks(RA1, RB1, RC1, RD1, RK1, RX0, RY0, RK2); outunpack_blocks(RA2, RB2, RC2, RD2, RK1, RX0, RY0, RK2); - ret; + RET; SYM_FUNC_END(__twofish_dec_blk8) SYM_FUNC_START(twofish_ecb_enc_8way) @@ -327,7 +327,7 @@ SYM_FUNC_START(twofish_ecb_enc_8way) store_8way(%r11, RC1, RD1, RA1, RB1, RC2, RD2, RA2, RB2); FRAME_END - ret; + RET; SYM_FUNC_END(twofish_ecb_enc_8way) SYM_FUNC_START(twofish_ecb_dec_8way) @@ -347,7 +347,7 @@ SYM_FUNC_START(twofish_ecb_dec_8way) store_8way(%r11, RA1, RB1, RC1, RD1, RA2, RB2, RC2, RD2); FRAME_END - ret; + RET; SYM_FUNC_END(twofish_ecb_dec_8way) SYM_FUNC_START(twofish_cbc_dec_8way) @@ -372,5 +372,5 @@ SYM_FUNC_START(twofish_cbc_dec_8way) popq %r12; FRAME_END - ret; + RET; SYM_FUNC_END(twofish_cbc_dec_8way) --- a/arch/x86/crypto/twofish-i586-asm_32.S +++ b/arch/x86/crypto/twofish-i586-asm_32.S @@ -260,7 +260,7 @@ SYM_FUNC_START(twofish_enc_blk) pop %ebx pop %ebp mov $1, %eax - ret + RET SYM_FUNC_END(twofish_enc_blk) SYM_FUNC_START(twofish_dec_blk) @@ -317,5 +317,5 @@ SYM_FUNC_START(twofish_dec_blk) pop %ebx pop %ebp mov $1, %eax - ret + RET SYM_FUNC_END(twofish_dec_blk) --- a/arch/x86/crypto/twofish-x86_64-asm_64-3way.S +++ b/arch/x86/crypto/twofish-x86_64-asm_64-3way.S @@ -258,7 +258,7 @@ SYM_FUNC_START(__twofish_enc_blk_3way) popq %rbx; popq %r12; popq %r13; - ret; + RET; .L__enc_xor3: outunpack_enc3(xor); @@ -266,7 +266,7 @@ SYM_FUNC_START(__twofish_enc_blk_3way) popq %rbx; popq %r12; popq %r13; - ret; + RET; SYM_FUNC_END(__twofish_enc_blk_3way) SYM_FUNC_START(twofish_dec_blk_3way) @@ -301,5 +301,5 @@ SYM_FUNC_START(twofish_dec_blk_3way) popq %rbx; popq %r12; popq %r13; - ret; + RET; SYM_FUNC_END(twofish_dec_blk_3way) --- a/arch/x86/crypto/twofish-x86_64-asm_64.S +++ b/arch/x86/crypto/twofish-x86_64-asm_64.S @@ -252,7 +252,7 @@ SYM_FUNC_START(twofish_enc_blk) popq R1 movl $1,%eax - ret + RET SYM_FUNC_END(twofish_enc_blk) SYM_FUNC_START(twofish_dec_blk) @@ -304,5 +304,5 @@ SYM_FUNC_START(twofish_dec_blk) popq R1 movl $1,%eax - ret + RET SYM_FUNC_END(twofish_dec_blk) --- a/arch/x86/entry/entry_32.S +++ b/arch/x86/entry/entry_32.S @@ -740,7 +740,7 @@ SYM_FUNC_START(schedule_tail_wrapper) popl %eax FRAME_END - ret + RET SYM_FUNC_END(schedule_tail_wrapper) .popsection --- a/arch/x86/entry/entry_64.S +++ b/arch/x86/entry/entry_64.S @@ -734,7 +734,7 @@ SYM_FUNC_START(asm_load_gs_index) 2: ALTERNATIVE "", "mfence", X86_BUG_SWAPGS_FENCE swapgs FRAME_END - ret + RET SYM_FUNC_END(asm_load_gs_index) EXPORT_SYMBOL(asm_load_gs_index) @@ -885,7 +885,7 @@ SYM_CODE_START_LOCAL(paranoid_entry) * is needed here. */ SAVE_AND_SET_GSBASE scratch_reg=%rax save_reg=%rbx - ret + RET .Lparanoid_entry_checkgs: /* EBX = 1 -> kernel GSBASE active, no restore required */ @@ -898,7 +898,7 @@ SYM_CODE_START_LOCAL(paranoid_entry) rdmsr testl %edx, %edx jns .Lparanoid_entry_swapgs - ret + RET .Lparanoid_entry_swapgs: swapgs @@ -912,7 +912,7 @@ SYM_CODE_START_LOCAL(paranoid_entry) /* EBX = 0 -> SWAPGS required on exit */ xorl %ebx, %ebx - ret + RET SYM_CODE_END(paranoid_entry) /* @@ -991,12 +991,12 @@ SYM_CODE_START_LOCAL(error_entry) movq %rax, %rsp /* switch stack */ ENCODE_FRAME_POINTER pushq %r12 - ret + RET .Lerror_entry_done_lfence: FENCE_SWAPGS_KERNEL_ENTRY .Lerror_entry_done: - ret + RET /* * There are two places in the kernel that can potentially fault with --- a/arch/x86/entry/thunk_32.S +++ b/arch/x86/entry/thunk_32.S @@ -24,7 +24,7 @@ SYM_CODE_START_NOALIGN(\name) popl %edx popl %ecx popl %eax - ret + RET _ASM_NOKPROBE(\name) SYM_CODE_END(\name) .endm --- a/arch/x86/entry/thunk_64.S +++ b/arch/x86/entry/thunk_64.S @@ -50,7 +50,7 @@ SYM_CODE_START_LOCAL_NOALIGN(__thunk_res popq %rsi popq %rdi popq %rbp - ret + RET _ASM_NOKPROBE(__thunk_restore) SYM_CODE_END(__thunk_restore) #endif --- a/arch/x86/entry/vdso/vdso32/system_call.S +++ b/arch/x86/entry/vdso/vdso32/system_call.S @@ -78,7 +78,7 @@ SYM_INNER_LABEL(int80_landing_pad, SYM_L popl %ecx CFI_RESTORE ecx CFI_ADJUST_CFA_OFFSET -4 - ret + RET CFI_ENDPROC .size __kernel_vsyscall,.-__kernel_vsyscall --- a/arch/x86/entry/vdso/vsgx.S +++ b/arch/x86/entry/vdso/vsgx.S @@ -81,7 +81,7 @@ SYM_FUNC_START(__vdso_sgx_enter_enclave) pop %rbx leave .cfi_def_cfa %rsp, 8 - ret + RET /* The out-of-line code runs with the pre-leave stack frame. */ .cfi_def_cfa %rbp, 16 --- a/arch/x86/entry/vsyscall/vsyscall_emu_64.S +++ b/arch/x86/entry/vsyscall/vsyscall_emu_64.S @@ -19,17 +19,17 @@ __PAGE_ALIGNED_DATA mov $__NR_gettimeofday, %rax syscall - ret + RET .balign 1024, 0xcc mov $__NR_time, %rax syscall - ret + RET .balign 1024, 0xcc mov $__NR_getcpu, %rax syscall - ret + RET .balign 4096, 0xcc --- a/arch/x86/include/asm/linkage.h +++ b/arch/x86/include/asm/linkage.h @@ -18,6 +18,21 @@ #define __ALIGN_STR __stringify(__ALIGN) #endif +/* + * for !SLS, gas is case insensitive, while CPP isn't + */ +#ifdef CONFIG_SLS +#define RET ret; int3 +#endif + +#else /* __ASSEMBLY__ */ + +#ifdef CONFIG_SLS +#define ASM_RET "ret; int3\n\t" +#else +#define ASM_RET "ret\n\t" +#endif + #endif /* __ASSEMBLY__ */ #endif /* _ASM_X86_LINKAGE_H */ --- a/arch/x86/include/asm/paravirt.h +++ b/arch/x86/include/asm/paravirt.h @@ -671,7 +671,7 @@ bool __raw_callee_save___native_vcpu_is_ "call " #func ";" \ PV_RESTORE_ALL_CALLER_REGS \ FRAME_END \ - "ret;" \ + ASM_RET \ ".size " PV_THUNK_NAME(func) ", .-" PV_THUNK_NAME(func) ";" \ ".popsection") --- a/arch/x86/include/asm/qspinlock_paravirt.h +++ b/arch/x86/include/asm/qspinlock_paravirt.h @@ -48,7 +48,7 @@ asm (".pushsection .text;" "jne .slowpath;" "pop %rdx;" FRAME_END - "ret;" + ASM_RET ".slowpath: " "push %rsi;" "movzbl %al,%esi;" @@ -56,7 +56,7 @@ asm (".pushsection .text;" "pop %rsi;" "pop %rdx;" FRAME_END - "ret;" + ASM_RET ".size " PV_UNLOCK ", .-" PV_UNLOCK ";" ".popsection"); --- a/arch/x86/include/asm/static_call.h +++ b/arch/x86/include/asm/static_call.h @@ -36,7 +36,7 @@ __ARCH_DEFINE_STATIC_CALL_TRAMP(name, ".byte 0xe9; .long " #func " - (. + 4)") #define ARCH_DEFINE_STATIC_CALL_NULL_TRAMP(name) \ - __ARCH_DEFINE_STATIC_CALL_TRAMP(name, "ret; nop; nop; nop; nop") + __ARCH_DEFINE_STATIC_CALL_TRAMP(name, "ret; int3; nop; nop; nop") #define ARCH_ADD_TRAMP_KEY(name) \ --- a/arch/x86/kernel/acpi/wakeup_32.S +++ b/arch/x86/kernel/acpi/wakeup_32.S @@ -60,7 +60,7 @@ SYM_CODE_END(wakeup_pmode_return) popl saved_context_eflags movl $ret_point, saved_eip - ret + RET restore_registers: @@ -70,7 +70,7 @@ SYM_CODE_END(wakeup_pmode_return) movl saved_context_edi, %edi pushl saved_context_eflags popfl - ret + RET SYM_CODE_START(do_suspend_lowlevel) call save_processor_state @@ -86,7 +86,7 @@ SYM_CODE_START(do_suspend_lowlevel) ret_point: call restore_registers call restore_processor_state - ret + RET SYM_CODE_END(do_suspend_lowlevel) .data --- a/arch/x86/kernel/alternative.c +++ b/arch/x86/kernel/alternative.c @@ -714,7 +714,7 @@ asm ( " .type int3_magic, @function\n" "int3_magic:\n" " movl $1, (%" _ASM_ARG1 ")\n" -" ret\n" + ASM_RET " .size int3_magic, .-int3_magic\n" " .popsection\n" ); --- a/arch/x86/kernel/ftrace.c +++ b/arch/x86/kernel/ftrace.c @@ -303,7 +303,7 @@ union ftrace_op_code_union { } __attribute__((packed)); }; -#define RET_SIZE 1 +#define RET_SIZE 1 + IS_ENABLED(CONFIG_SLS) static unsigned long create_trampoline(struct ftrace_ops *ops, unsigned int *tramp_size) --- a/arch/x86/kernel/ftrace_32.S +++ b/arch/x86/kernel/ftrace_32.S @@ -19,7 +19,7 @@ #endif SYM_FUNC_START(__fentry__) - ret + RET SYM_FUNC_END(__fentry__) EXPORT_SYMBOL(__fentry__) @@ -84,7 +84,7 @@ SYM_CODE_START(ftrace_caller) /* This is weak to keep gas from relaxing the jumps */ SYM_INNER_LABEL_ALIGN(ftrace_stub, SYM_L_WEAK) - ret + RET SYM_CODE_END(ftrace_caller) SYM_CODE_START(ftrace_regs_caller) @@ -177,7 +177,7 @@ SYM_CODE_START(ftrace_graph_caller) popl %edx popl %ecx popl %eax - ret + RET SYM_CODE_END(ftrace_graph_caller) .globl return_to_handler --- a/arch/x86/kernel/ftrace_64.S +++ b/arch/x86/kernel/ftrace_64.S @@ -132,7 +132,7 @@ #ifdef CONFIG_DYNAMIC_FTRACE SYM_FUNC_START(__fentry__) - retq + RET SYM_FUNC_END(__fentry__) EXPORT_SYMBOL(__fentry__) @@ -176,11 +176,11 @@ SYM_FUNC_END(ftrace_caller); SYM_FUNC_START(ftrace_epilogue) /* * This is weak to keep gas from relaxing the jumps. - * It is also used to copy the retq for trampolines. + * It is also used to copy the RET for trampolines. */ SYM_INNER_LABEL_ALIGN(ftrace_stub, SYM_L_WEAK) UNWIND_HINT_FUNC - retq + RET SYM_FUNC_END(ftrace_epilogue) SYM_FUNC_START(ftrace_regs_caller) @@ -284,7 +284,7 @@ SYM_FUNC_START(__fentry__) jnz trace SYM_INNER_LABEL(ftrace_stub, SYM_L_GLOBAL) - retq + RET trace: /* save_mcount_regs fills in first two parameters */ --- a/arch/x86/kernel/head_32.S +++ b/arch/x86/kernel/head_32.S @@ -340,7 +340,7 @@ SYM_FUNC_END(startup_32_smp) __INIT setup_once: andl $0,setup_once_ref /* Once is enough, thanks */ - ret + RET SYM_FUNC_START(early_idt_handler_array) # 36(%esp) %eflags --- a/arch/x86/kernel/irqflags.S +++ b/arch/x86/kernel/irqflags.S @@ -11,7 +11,7 @@ SYM_FUNC_START(native_save_fl) pushf pop %_ASM_AX - ret + RET SYM_FUNC_END(native_save_fl) .popsection EXPORT_SYMBOL(native_save_fl) --- a/arch/x86/kernel/paravirt.c +++ b/arch/x86/kernel/paravirt.c @@ -41,7 +41,7 @@ extern void _paravirt_nop(void); asm (".pushsection .entry.text, \"ax\"\n" ".global _paravirt_nop\n" "_paravirt_nop:\n\t" - "ret\n\t" + ASM_RET ".size _paravirt_nop, . - _paravirt_nop\n\t" ".type _paravirt_nop, @function\n\t" ".popsection"); @@ -51,7 +51,7 @@ asm (".pushsection .entry.text, \"ax\"\n ".global paravirt_ret0\n" "paravirt_ret0:\n\t" "xor %" _ASM_AX ", %" _ASM_AX ";\n\t" - "ret\n\t" + ASM_RET ".size paravirt_ret0, . - paravirt_ret0\n\t" ".type paravirt_ret0, @function\n\t" ".popsection"); --- a/arch/x86/kernel/relocate_kernel_32.S +++ b/arch/x86/kernel/relocate_kernel_32.S @@ -91,7 +91,7 @@ SYM_CODE_START_NOALIGN(relocate_kernel) movl %edi, %eax addl $(identity_mapped - relocate_kernel), %eax pushl %eax - ret + RET SYM_CODE_END(relocate_kernel) SYM_CODE_START_LOCAL_NOALIGN(identity_mapped) @@ -159,7 +159,7 @@ SYM_CODE_START_LOCAL_NOALIGN(identity_ma xorl %edx, %edx xorl %esi, %esi xorl %ebp, %ebp - ret + RET 1: popl %edx movl CP_PA_SWAP_PAGE(%edi), %esp @@ -190,7 +190,7 @@ SYM_CODE_START_LOCAL_NOALIGN(identity_ma movl %edi, %eax addl $(virtual_mapped - relocate_kernel), %eax pushl %eax - ret + RET SYM_CODE_END(identity_mapped) SYM_CODE_START_LOCAL_NOALIGN(virtual_mapped) @@ -208,7 +208,7 @@ SYM_CODE_START_LOCAL_NOALIGN(virtual_map popl %edi popl %esi popl %ebx - ret + RET SYM_CODE_END(virtual_mapped) /* Do the copies */ @@ -271,7 +271,7 @@ SYM_CODE_START_LOCAL_NOALIGN(swap_pages) popl %edi popl %ebx popl %ebp - ret + RET SYM_CODE_END(swap_pages) .globl kexec_control_code_size --- a/arch/x86/kernel/relocate_kernel_64.S +++ b/arch/x86/kernel/relocate_kernel_64.S @@ -104,7 +104,7 @@ SYM_CODE_START_NOALIGN(relocate_kernel) /* jump to identity mapped page */ addq $(identity_mapped - relocate_kernel), %r8 pushq %r8 - ret + RET SYM_CODE_END(relocate_kernel) SYM_CODE_START_LOCAL_NOALIGN(identity_mapped) @@ -191,7 +191,7 @@ SYM_CODE_START_LOCAL_NOALIGN(identity_ma xorl %r14d, %r14d xorl %r15d, %r15d - ret + RET 1: popq %rdx @@ -210,7 +210,7 @@ SYM_CODE_START_LOCAL_NOALIGN(identity_ma call swap_pages movq $virtual_mapped, %rax pushq %rax - ret + RET SYM_CODE_END(identity_mapped) SYM_CODE_START_LOCAL_NOALIGN(virtual_mapped) @@ -231,7 +231,7 @@ SYM_CODE_START_LOCAL_NOALIGN(virtual_map popq %r12 popq %rbp popq %rbx - ret + RET SYM_CODE_END(virtual_mapped) /* Do the copies */ @@ -288,7 +288,7 @@ SYM_CODE_START_LOCAL_NOALIGN(swap_pages) lea PAGE_SIZE(%rax), %rsi jmp 0b 3: - ret + RET SYM_CODE_END(swap_pages) .globl kexec_control_code_size --- a/arch/x86/kernel/sev_verify_cbit.S +++ b/arch/x86/kernel/sev_verify_cbit.S @@ -85,5 +85,5 @@ SYM_FUNC_START(sev_verify_cbit) #endif /* Return page-table pointer */ movq %rdi, %rax - ret + RET SYM_FUNC_END(sev_verify_cbit) --- a/arch/x86/kernel/static_call.c +++ b/arch/x86/kernel/static_call.c @@ -17,6 +17,8 @@ enum insn_type { */ static const u8 xor5rax[] = { 0x66, 0x66, 0x48, 0x31, 0xc0 }; +static const u8 retinsn[] = { RET_INSN_OPCODE, 0xcc, 0xcc, 0xcc, 0xcc }; + static void __ref __static_call_transform(void *insn, enum insn_type type, void *func) { const void *emulate = NULL; @@ -42,8 +44,7 @@ static void __ref __static_call_transfor break; case RET: - code = text_gen_insn(RET_INSN_OPCODE, insn, func); - size = RET_INSN_SIZE; + code = &retinsn; break; } --- a/arch/x86/kernel/verify_cpu.S +++ b/arch/x86/kernel/verify_cpu.S @@ -132,9 +132,9 @@ SYM_FUNC_START_LOCAL(verify_cpu) .Lverify_cpu_no_longmode: popf # Restore caller passed flags movl $1,%eax - ret + RET .Lverify_cpu_sse_ok: popf # Restore caller passed flags xorl %eax, %eax - ret + RET SYM_FUNC_END(verify_cpu) --- a/arch/x86/kvm/emulate.c +++ b/arch/x86/kvm/emulate.c @@ -315,7 +315,7 @@ static int fastop(struct x86_emulate_ctx __FOP_FUNC(#name) #define __FOP_RET(name) \ - "ret \n\t" \ + ASM_RET \ ".size " name ", .-" name "\n\t" #define FOP_RET(name) \ @@ -435,7 +435,7 @@ static int fastop(struct x86_emulate_ctx __FOP_RET(#op) asm(".pushsection .fixup, \"ax\"\n" - "kvm_fastop_exception: xor %esi, %esi; ret\n" + "kvm_fastop_exception: xor %esi, %esi; " ASM_RET ".popsection"); FOP_START(setcc) --- a/arch/x86/kvm/svm/vmenter.S +++ b/arch/x86/kvm/svm/vmenter.S @@ -148,7 +148,7 @@ SYM_FUNC_START(__svm_vcpu_run) pop %edi #endif pop %_ASM_BP - ret + RET 3: cmpb $0, kvm_rebooting jne 2b @@ -202,7 +202,7 @@ SYM_FUNC_START(__svm_sev_es_vcpu_run) pop %edi #endif pop %_ASM_BP - ret + RET 3: cmpb $0, kvm_rebooting jne 2b --- a/arch/x86/kvm/vmx/vmenter.S +++ b/arch/x86/kvm/vmx/vmenter.S @@ -49,14 +49,14 @@ SYM_FUNC_START_LOCAL(vmx_vmenter) je 2f 1: vmresume - ret + RET 2: vmlaunch - ret + RET 3: cmpb $0, kvm_rebooting je 4f - ret + RET 4: ud2 _ASM_EXTABLE(1b, 3b) @@ -89,7 +89,7 @@ SYM_FUNC_START(vmx_vmexit) pop %_ASM_AX .Lvmexit_skip_rsb: #endif - ret + RET SYM_FUNC_END(vmx_vmexit) /** @@ -228,7 +228,7 @@ SYM_FUNC_START(__vmx_vcpu_run) pop %edi #endif pop %_ASM_BP - ret + RET /* VM-Fail. Out-of-line to avoid a taken Jcc after VM-Exit. */ 2: mov $1, %eax @@ -293,7 +293,7 @@ SYM_FUNC_START(vmread_error_trampoline) pop %_ASM_AX pop %_ASM_BP - ret + RET SYM_FUNC_END(vmread_error_trampoline) SYM_FUNC_START(vmx_do_interrupt_nmi_irqoff) @@ -326,5 +326,5 @@ SYM_FUNC_START(vmx_do_interrupt_nmi_irqo */ mov %_ASM_BP, %_ASM_SP pop %_ASM_BP - ret + RET SYM_FUNC_END(vmx_do_interrupt_nmi_irqoff) --- a/arch/x86/lib/atomic64_386_32.S +++ b/arch/x86/lib/atomic64_386_32.S @@ -30,7 +30,7 @@ SYM_FUNC_START(atomic64_##op##_386); \ #define RET \ UNLOCK v; \ - ret + RET #define RET_ENDP \ RET; \ --- a/arch/x86/lib/atomic64_cx8_32.S +++ b/arch/x86/lib/atomic64_cx8_32.S @@ -18,7 +18,7 @@ SYM_FUNC_START(atomic64_read_cx8) read64 %ecx - ret + RET SYM_FUNC_END(atomic64_read_cx8) SYM_FUNC_START(atomic64_set_cx8) @@ -28,7 +28,7 @@ SYM_FUNC_START(atomic64_set_cx8) cmpxchg8b (%esi) jne 1b - ret + RET SYM_FUNC_END(atomic64_set_cx8) SYM_FUNC_START(atomic64_xchg_cx8) @@ -37,7 +37,7 @@ SYM_FUNC_START(atomic64_xchg_cx8) cmpxchg8b (%esi) jne 1b - ret + RET SYM_FUNC_END(atomic64_xchg_cx8) .macro addsub_return func ins insc @@ -68,7 +68,7 @@ SYM_FUNC_START(atomic64_\func\()_return_ popl %esi popl %ebx popl %ebp - ret + RET SYM_FUNC_END(atomic64_\func\()_return_cx8) .endm @@ -93,7 +93,7 @@ SYM_FUNC_START(atomic64_\func\()_return_ movl %ebx, %eax movl %ecx, %edx popl %ebx - ret + RET SYM_FUNC_END(atomic64_\func\()_return_cx8) .endm @@ -118,7 +118,7 @@ SYM_FUNC_START(atomic64_dec_if_positive_ movl %ebx, %eax movl %ecx, %edx popl %ebx - ret + RET SYM_FUNC_END(atomic64_dec_if_positive_cx8) SYM_FUNC_START(atomic64_add_unless_cx8) @@ -149,7 +149,7 @@ SYM_FUNC_START(atomic64_add_unless_cx8) addl $8, %esp popl %ebx popl %ebp - ret + RET 4: cmpl %edx, 4(%esp) jne 2b @@ -176,5 +176,5 @@ SYM_FUNC_START(atomic64_inc_not_zero_cx8 movl $1, %eax 3: popl %ebx - ret + RET SYM_FUNC_END(atomic64_inc_not_zero_cx8) --- a/arch/x86/lib/checksum_32.S +++ b/arch/x86/lib/checksum_32.S @@ -127,7 +127,7 @@ SYM_FUNC_START(csum_partial) 8: popl %ebx popl %esi - ret + RET SYM_FUNC_END(csum_partial) #else @@ -245,7 +245,7 @@ SYM_FUNC_START(csum_partial) 90: popl %ebx popl %esi - ret + RET SYM_FUNC_END(csum_partial) #endif @@ -371,7 +371,7 @@ EXC( movb %cl, (%edi) ) popl %esi popl %edi popl %ecx # equivalent to addl $4,%esp - ret + RET SYM_FUNC_END(csum_partial_copy_generic) #else @@ -447,7 +447,7 @@ EXC( movb %dl, (%edi) ) popl %esi popl %edi popl %ebx - ret + RET SYM_FUNC_END(csum_partial_copy_generic) #undef ROUND --- a/arch/x86/lib/clear_page_64.S +++ b/arch/x86/lib/clear_page_64.S @@ -17,7 +17,7 @@ SYM_FUNC_START(clear_page_rep) movl $4096/8,%ecx xorl %eax,%eax rep stosq - ret + RET SYM_FUNC_END(clear_page_rep) EXPORT_SYMBOL_GPL(clear_page_rep) @@ -39,7 +39,7 @@ SYM_FUNC_START(clear_page_orig) leaq 64(%rdi),%rdi jnz .Lloop nop - ret + RET SYM_FUNC_END(clear_page_orig) EXPORT_SYMBOL_GPL(clear_page_orig) @@ -47,6 +47,6 @@ SYM_FUNC_START(clear_page_erms) movl $4096,%ecx xorl %eax,%eax rep stosb - ret + RET SYM_FUNC_END(clear_page_erms) EXPORT_SYMBOL_GPL(clear_page_erms) --- a/arch/x86/lib/cmpxchg16b_emu.S +++ b/arch/x86/lib/cmpxchg16b_emu.S @@ -37,11 +37,11 @@ SYM_FUNC_START(this_cpu_cmpxchg16b_emu) popfq mov $1, %al - ret + RET .Lnot_same: popfq xor %al,%al - ret + RET SYM_FUNC_END(this_cpu_cmpxchg16b_emu) --- a/arch/x86/lib/cmpxchg8b_emu.S +++ b/arch/x86/lib/cmpxchg8b_emu.S @@ -32,7 +32,7 @@ SYM_FUNC_START(cmpxchg8b_emu) movl %ecx, 4(%esi) popfl - ret + RET .Lnot_same: movl (%esi), %eax @@ -40,7 +40,7 @@ SYM_FUNC_START(cmpxchg8b_emu) movl 4(%esi), %edx popfl - ret + RET SYM_FUNC_END(cmpxchg8b_emu) EXPORT_SYMBOL(cmpxchg8b_emu) --- a/arch/x86/lib/copy_mc_64.S +++ b/arch/x86/lib/copy_mc_64.S @@ -77,7 +77,7 @@ SYM_FUNC_START(copy_mc_fragile) .L_done_memcpy_trap: xorl %eax, %eax .L_done: - ret + RET SYM_FUNC_END(copy_mc_fragile) .section .fixup, "ax" @@ -132,7 +132,7 @@ SYM_FUNC_START(copy_mc_enhanced_fast_str rep movsb /* Copy successful. Return zero */ xorl %eax, %eax - ret + RET SYM_FUNC_END(copy_mc_enhanced_fast_string) .section .fixup, "ax" @@ -145,7 +145,7 @@ SYM_FUNC_END(copy_mc_enhanced_fast_strin * user-copy routines. */ movq %rcx, %rax - ret + RET .previous --- a/arch/x86/lib/copy_page_64.S +++ b/arch/x86/lib/copy_page_64.S @@ -17,7 +17,7 @@ SYM_FUNC_START(copy_page) ALTERNATIVE "jmp copy_page_regs", "", X86_FEATURE_REP_GOOD movl $4096/8, %ecx rep movsq - ret + RET SYM_FUNC_END(copy_page) EXPORT_SYMBOL(copy_page) @@ -85,5 +85,5 @@ SYM_FUNC_START_LOCAL(copy_page_regs) movq (%rsp), %rbx movq 1*8(%rsp), %r12 addq $2*8, %rsp - ret + RET SYM_FUNC_END(copy_page_regs) --- a/arch/x86/lib/copy_user_64.S +++ b/arch/x86/lib/copy_user_64.S @@ -105,7 +105,7 @@ SYM_FUNC_START(copy_user_generic_unrolle jnz 21b 23: xor %eax,%eax ASM_CLAC - ret + RET .section .fixup,"ax" 30: shll $6,%ecx @@ -173,7 +173,7 @@ SYM_FUNC_START(copy_user_generic_string) movsb xorl %eax,%eax ASM_CLAC - ret + RET .section .fixup,"ax" 11: leal (%rdx,%rcx,8),%ecx @@ -207,7 +207,7 @@ SYM_FUNC_START(copy_user_enhanced_fast_s movsb xorl %eax,%eax ASM_CLAC - ret + RET .section .fixup,"ax" 12: movl %ecx,%edx /* ecx is zerorest also */ @@ -237,7 +237,7 @@ SYM_CODE_START_LOCAL(.Lcopy_user_handle_ 1: rep movsb 2: mov %ecx,%eax ASM_CLAC - ret + RET _ASM_EXTABLE_CPY(1b, 2b) SYM_CODE_END(.Lcopy_user_handle_tail) @@ -348,7 +348,7 @@ SYM_FUNC_START(__copy_user_nocache) xorl %eax,%eax ASM_CLAC sfence - ret + RET .section .fixup,"ax" .L_fixup_4x8b_copy: --- a/arch/x86/lib/csum-copy_64.S +++ b/arch/x86/lib/csum-copy_64.S @@ -201,7 +201,7 @@ SYM_FUNC_START(csum_partial_copy_generic movq 3*8(%rsp), %r13 movq 4*8(%rsp), %r15 addq $5*8, %rsp - ret + RET .Lshort: movl %ecx, %r10d jmp .L1 --- a/arch/x86/lib/error-inject.c +++ b/arch/x86/lib/error-inject.c @@ -1,5 +1,6 @@ // SPDX-License-Identifier: GPL-2.0 +#include <linux/linkage.h> #include <linux/error-injection.h> #include <linux/kprobes.h> @@ -10,7 +11,7 @@ asm( ".type just_return_func, @function\n" ".globl just_return_func\n" "just_return_func:\n" - " ret\n" + ASM_RET ".size just_return_func, .-just_return_func\n" ); --- a/arch/x86/lib/getuser.S +++ b/arch/x86/lib/getuser.S @@ -57,7 +57,7 @@ SYM_FUNC_START(__get_user_1) 1: movzbl (%_ASM_AX),%edx xor %eax,%eax ASM_CLAC - ret + RET SYM_FUNC_END(__get_user_1) EXPORT_SYMBOL(__get_user_1) @@ -71,7 +71,7 @@ SYM_FUNC_START(__get_user_2) 2: movzwl (%_ASM_AX),%edx xor %eax,%eax ASM_CLAC - ret + RET SYM_FUNC_END(__get_user_2) EXPORT_SYMBOL(__get_user_2) @@ -85,7 +85,7 @@ SYM_FUNC_START(__get_user_4) 3: movl (%_ASM_AX),%edx xor %eax,%eax ASM_CLAC - ret + RET SYM_FUNC_END(__get_user_4) EXPORT_SYMBOL(__get_user_4) @@ -100,7 +100,7 @@ SYM_FUNC_START(__get_user_8) 4: movq (%_ASM_AX),%rdx xor %eax,%eax ASM_CLAC - ret + RET #else LOAD_TASK_SIZE_MINUS_N(7) cmp %_ASM_DX,%_ASM_AX @@ -112,7 +112,7 @@ SYM_FUNC_START(__get_user_8) 5: movl 4(%_ASM_AX),%ecx xor %eax,%eax ASM_CLAC - ret + RET #endif SYM_FUNC_END(__get_user_8) EXPORT_SYMBOL(__get_user_8) @@ -124,7 +124,7 @@ SYM_FUNC_START(__get_user_nocheck_1) 6: movzbl (%_ASM_AX),%edx xor %eax,%eax ASM_CLAC - ret + RET SYM_FUNC_END(__get_user_nocheck_1) EXPORT_SYMBOL(__get_user_nocheck_1) @@ -134,7 +134,7 @@ SYM_FUNC_START(__get_user_nocheck_2) 7: movzwl (%_ASM_AX),%edx xor %eax,%eax ASM_CLAC - ret + RET SYM_FUNC_END(__get_user_nocheck_2) EXPORT_SYMBOL(__get_user_nocheck_2) @@ -144,7 +144,7 @@ SYM_FUNC_START(__get_user_nocheck_4) 8: movl (%_ASM_AX),%edx xor %eax,%eax ASM_CLAC - ret + RET SYM_FUNC_END(__get_user_nocheck_4) EXPORT_SYMBOL(__get_user_nocheck_4) @@ -159,7 +159,7 @@ SYM_FUNC_START(__get_user_nocheck_8) #endif xor %eax,%eax ASM_CLAC - ret + RET SYM_FUNC_END(__get_user_nocheck_8) EXPORT_SYMBOL(__get_user_nocheck_8) @@ -169,7 +169,7 @@ SYM_CODE_START_LOCAL(.Lbad_get_user_clac bad_get_user: xor %edx,%edx mov $(-EFAULT),%_ASM_AX - ret + RET SYM_CODE_END(.Lbad_get_user_clac) #ifdef CONFIG_X86_32 @@ -179,7 +179,7 @@ SYM_CODE_START_LOCAL(.Lbad_get_user_8_cl xor %edx,%edx xor %ecx,%ecx mov $(-EFAULT),%_ASM_AX - ret + RET SYM_CODE_END(.Lbad_get_user_8_clac) #endif --- a/arch/x86/lib/hweight.S +++ b/arch/x86/lib/hweight.S @@ -32,7 +32,7 @@ SYM_FUNC_START(__sw_hweight32) imull $0x01010101, %eax, %eax # w_tmp *= 0x01010101 shrl $24, %eax # w = w_tmp >> 24 __ASM_SIZE(pop,) %__ASM_REG(dx) - ret + RET SYM_FUNC_END(__sw_hweight32) EXPORT_SYMBOL(__sw_hweight32) @@ -65,7 +65,7 @@ SYM_FUNC_START(__sw_hweight64) popq %rdx popq %rdi - ret + RET #else /* CONFIG_X86_32 */ /* We're getting an u64 arg in (%eax,%edx): unsigned long hweight64(__u64 w) */ pushl %ecx @@ -77,7 +77,7 @@ SYM_FUNC_START(__sw_hweight64) addl %ecx, %eax # result popl %ecx - ret + RET #endif SYM_FUNC_END(__sw_hweight64) EXPORT_SYMBOL(__sw_hweight64) --- a/arch/x86/lib/iomap_copy_64.S +++ b/arch/x86/lib/iomap_copy_64.S @@ -11,5 +11,5 @@ SYM_FUNC_START(__iowrite32_copy) movl %edx,%ecx rep movsd - ret + RET SYM_FUNC_END(__iowrite32_copy) --- a/arch/x86/lib/memcpy_64.S +++ b/arch/x86/lib/memcpy_64.S @@ -39,7 +39,7 @@ SYM_FUNC_START_WEAK(memcpy) rep movsq movl %edx, %ecx rep movsb - ret + RET SYM_FUNC_END(memcpy) SYM_FUNC_END_ALIAS(__memcpy) EXPORT_SYMBOL(memcpy) @@ -53,7 +53,7 @@ SYM_FUNC_START_LOCAL(memcpy_erms) movq %rdi, %rax movq %rdx, %rcx rep movsb - ret + RET SYM_FUNC_END(memcpy_erms) SYM_FUNC_START_LOCAL(memcpy_orig) @@ -137,7 +137,7 @@ SYM_FUNC_START_LOCAL(memcpy_orig) movq %r9, 1*8(%rdi) movq %r10, -2*8(%rdi, %rdx) movq %r11, -1*8(%rdi, %rdx) - retq + RET .p2align 4 .Lless_16bytes: cmpl $8, %edx @@ -149,7 +149,7 @@ SYM_FUNC_START_LOCAL(memcpy_orig) movq -1*8(%rsi, %rdx), %r9 movq %r8, 0*8(%rdi) movq %r9, -1*8(%rdi, %rdx) - retq + RET .p2align 4 .Lless_8bytes: cmpl $4, %edx @@ -162,7 +162,7 @@ SYM_FUNC_START_LOCAL(memcpy_orig) movl -4(%rsi, %rdx), %r8d movl %ecx, (%rdi) movl %r8d, -4(%rdi, %rdx) - retq + RET .p2align 4 .Lless_3bytes: subl $1, %edx @@ -180,7 +180,7 @@ SYM_FUNC_START_LOCAL(memcpy_orig) movb %cl, (%rdi) .Lend: - retq + RET SYM_FUNC_END(memcpy_orig) .popsection --- a/arch/x86/lib/memmove_64.S +++ b/arch/x86/lib/memmove_64.S @@ -40,7 +40,7 @@ SYM_FUNC_START(__memmove) /* FSRM implies ERMS => no length checks, do the copy directly */ .Lmemmove_begin_forward: ALTERNATIVE "cmp $0x20, %rdx; jb 1f", "", X86_FEATURE_FSRM - ALTERNATIVE "", "movq %rdx, %rcx; rep movsb; retq", X86_FEATURE_ERMS + ALTERNATIVE "", "movq %rdx, %rcx; rep movsb; ret; int3", X86_FEATURE_ERMS /* * movsq instruction have many startup latency @@ -205,7 +205,7 @@ SYM_FUNC_START(__memmove) movb (%rsi), %r11b movb %r11b, (%rdi) 13: - retq + RET SYM_FUNC_END(__memmove) SYM_FUNC_END_ALIAS(memmove) EXPORT_SYMBOL(__memmove) --- a/arch/x86/lib/memset_64.S +++ b/arch/x86/lib/memset_64.S @@ -40,7 +40,7 @@ SYM_FUNC_START(__memset) movl %edx,%ecx rep stosb movq %r9,%rax - ret + RET SYM_FUNC_END(__memset) SYM_FUNC_END_ALIAS(memset) EXPORT_SYMBOL(memset) @@ -63,7 +63,7 @@ SYM_FUNC_START_LOCAL(memset_erms) movq %rdx,%rcx rep stosb movq %r9,%rax - ret + RET SYM_FUNC_END(memset_erms) SYM_FUNC_START_LOCAL(memset_orig) @@ -125,7 +125,7 @@ SYM_FUNC_START_LOCAL(memset_orig) .Lende: movq %r10,%rax - ret + RET .Lbad_alignment: cmpq $7,%rdx --- a/arch/x86/lib/msr-reg.S +++ b/arch/x86/lib/msr-reg.S @@ -35,7 +35,7 @@ SYM_FUNC_START(\op\()_safe_regs) movl %edi, 28(%r10) popq %r12 popq %rbx - ret + RET 3: movl $-EIO, %r11d jmp 2b @@ -77,7 +77,7 @@ SYM_FUNC_START(\op\()_safe_regs) popl %esi popl %ebp popl %ebx - ret + RET 3: movl $-EIO, 4(%esp) jmp 2b --- a/arch/x86/lib/putuser.S +++ b/arch/x86/lib/putuser.S @@ -52,7 +52,7 @@ SYM_INNER_LABEL(__put_user_nocheck_1, SY 1: movb %al,(%_ASM_CX) xor %ecx,%ecx ASM_CLAC - ret + RET SYM_FUNC_END(__put_user_1) EXPORT_SYMBOL(__put_user_1) EXPORT_SYMBOL(__put_user_nocheck_1) @@ -66,7 +66,7 @@ SYM_INNER_LABEL(__put_user_nocheck_2, SY 2: movw %ax,(%_ASM_CX) xor %ecx,%ecx ASM_CLAC - ret + RET SYM_FUNC_END(__put_user_2) EXPORT_SYMBOL(__put_user_2) EXPORT_SYMBOL(__put_user_nocheck_2) @@ -80,7 +80,7 @@ SYM_INNER_LABEL(__put_user_nocheck_4, SY 3: movl %eax,(%_ASM_CX) xor %ecx,%ecx ASM_CLAC - ret + RET SYM_FUNC_END(__put_user_4) EXPORT_SYMBOL(__put_user_4) EXPORT_SYMBOL(__put_user_nocheck_4) --- a/arch/x86/lib/retpoline.S +++ b/arch/x86/lib/retpoline.S @@ -23,7 +23,7 @@ .Ldo_rop_\@: mov %\reg, (%_ASM_SP) UNWIND_HINT_FUNC - ret + RET .endm .macro THUNK reg @@ -34,7 +34,7 @@ SYM_INNER_LABEL(__x86_indirect_thunk_\re ALTERNATIVE_2 __stringify(ANNOTATE_RETPOLINE_SAFE; jmp *%\reg), \ __stringify(RETPOLINE \reg), X86_FEATURE_RETPOLINE, \ - __stringify(lfence; ANNOTATE_RETPOLINE_SAFE; jmp *%\reg), X86_FEATURE_RETPOLINE_AMD + __stringify(lfence; ANNOTATE_RETPOLINE_SAFE; jmp *%\reg; int3), X86_FEATURE_RETPOLINE_AMD .endm --- a/arch/x86/math-emu/div_Xsig.S +++ b/arch/x86/math-emu/div_Xsig.S @@ -341,7 +341,7 @@ SYM_FUNC_START(div_Xsig) popl %esi leave - ret + RET #ifdef PARANOID --- a/arch/x86/math-emu/div_small.S +++ b/arch/x86/math-emu/div_small.S @@ -44,5 +44,5 @@ SYM_FUNC_START(FPU_div_small) popl %esi leave - ret + RET SYM_FUNC_END(FPU_div_small) --- a/arch/x86/math-emu/mul_Xsig.S +++ b/arch/x86/math-emu/mul_Xsig.S @@ -62,7 +62,7 @@ SYM_FUNC_START(mul32_Xsig) popl %esi leave - ret + RET SYM_FUNC_END(mul32_Xsig) @@ -115,7 +115,7 @@ SYM_FUNC_START(mul64_Xsig) popl %esi leave - ret + RET SYM_FUNC_END(mul64_Xsig) @@ -175,5 +175,5 @@ SYM_FUNC_START(mul_Xsig_Xsig) popl %esi leave - ret + RET SYM_FUNC_END(mul_Xsig_Xsig) --- a/arch/x86/math-emu/polynom_Xsig.S +++ b/arch/x86/math-emu/polynom_Xsig.S @@ -133,5 +133,5 @@ SYM_FUNC_START(polynomial_Xsig) popl %edi popl %esi leave - ret + RET SYM_FUNC_END(polynomial_Xsig) --- a/arch/x86/math-emu/reg_norm.S +++ b/arch/x86/math-emu/reg_norm.S @@ -72,7 +72,7 @@ SYM_FUNC_START(FPU_normalize) L_exit: popl %ebx leave - ret + RET L_zero: @@ -138,7 +138,7 @@ SYM_FUNC_START(FPU_normalize_nuo) popl %ebx leave - ret + RET L_exit_nuo_zero: movl TAG_Zero,%eax @@ -146,5 +146,5 @@ SYM_FUNC_START(FPU_normalize_nuo) popl %ebx leave - ret + RET SYM_FUNC_END(FPU_normalize_nuo) --- a/arch/x86/math-emu/reg_round.S +++ b/arch/x86/math-emu/reg_round.S @@ -437,7 +437,7 @@ LGreater_Half_53: /* Rounding: increme popl %edi popl %esi leave - ret + RET /* --- a/arch/x86/math-emu/reg_u_add.S +++ b/arch/x86/math-emu/reg_u_add.S @@ -164,6 +164,6 @@ SYM_FUNC_START(FPU_u_add) popl %edi popl %esi leave - ret + RET #endif /* PARANOID */ SYM_FUNC_END(FPU_u_add) --- a/arch/x86/math-emu/reg_u_div.S +++ b/arch/x86/math-emu/reg_u_div.S @@ -468,7 +468,7 @@ SYM_FUNC_START(FPU_u_div) popl %esi leave - ret + RET #endif /* PARANOID */ SYM_FUNC_END(FPU_u_div) --- a/arch/x86/math-emu/reg_u_mul.S +++ b/arch/x86/math-emu/reg_u_mul.S @@ -144,7 +144,7 @@ SYM_FUNC_START(FPU_u_mul) popl %edi popl %esi leave - ret + RET #endif /* PARANOID */ SYM_FUNC_END(FPU_u_mul) --- a/arch/x86/math-emu/reg_u_sub.S +++ b/arch/x86/math-emu/reg_u_sub.S @@ -270,5 +270,5 @@ SYM_FUNC_START(FPU_u_sub) popl %edi popl %esi leave - ret + RET SYM_FUNC_END(FPU_u_sub) --- a/arch/x86/math-emu/round_Xsig.S +++ b/arch/x86/math-emu/round_Xsig.S @@ -78,7 +78,7 @@ SYM_FUNC_START(round_Xsig) popl %esi popl %ebx leave - ret + RET SYM_FUNC_END(round_Xsig) @@ -138,5 +138,5 @@ SYM_FUNC_START(norm_Xsig) popl %esi popl %ebx leave - ret + RET SYM_FUNC_END(norm_Xsig) --- a/arch/x86/math-emu/shr_Xsig.S +++ b/arch/x86/math-emu/shr_Xsig.S @@ -45,7 +45,7 @@ SYM_FUNC_START(shr_Xsig) popl %ebx popl %esi leave - ret + RET L_more_than_31: cmpl $64,%ecx @@ -61,7 +61,7 @@ SYM_FUNC_START(shr_Xsig) movl $0,8(%esi) popl %esi leave - ret + RET L_more_than_63: cmpl $96,%ecx @@ -76,7 +76,7 @@ SYM_FUNC_START(shr_Xsig) movl %edx,8(%esi) popl %esi leave - ret + RET L_more_than_95: xorl %eax,%eax @@ -85,5 +85,5 @@ SYM_FUNC_START(shr_Xsig) movl %eax,8(%esi) popl %esi leave - ret + RET SYM_FUNC_END(shr_Xsig) --- a/arch/x86/math-emu/wm_shrx.S +++ b/arch/x86/math-emu/wm_shrx.S @@ -55,7 +55,7 @@ SYM_FUNC_START(FPU_shrx) popl %ebx popl %esi leave - ret + RET L_more_than_31: cmpl $64,%ecx @@ -70,7 +70,7 @@ SYM_FUNC_START(FPU_shrx) movl $0,4(%esi) popl %esi leave - ret + RET L_more_than_63: cmpl $96,%ecx @@ -84,7 +84,7 @@ SYM_FUNC_START(FPU_shrx) movl %edx,4(%esi) popl %esi leave - ret + RET L_more_than_95: xorl %eax,%eax @@ -92,7 +92,7 @@ SYM_FUNC_START(FPU_shrx) movl %eax,4(%esi) popl %esi leave - ret + RET SYM_FUNC_END(FPU_shrx) @@ -146,7 +146,7 @@ SYM_FUNC_START(FPU_shrxs) popl %ebx popl %esi leave - ret + RET /* Shift by [0..31] bits */ Ls_less_than_32: @@ -163,7 +163,7 @@ SYM_FUNC_START(FPU_shrxs) popl %ebx popl %esi leave - ret + RET /* Shift by [64..95] bits */ Ls_more_than_63: @@ -189,7 +189,7 @@ SYM_FUNC_START(FPU_shrxs) popl %ebx popl %esi leave - ret + RET Ls_more_than_95: /* Shift by [96..inf) bits */ @@ -203,5 +203,5 @@ SYM_FUNC_START(FPU_shrxs) popl %ebx popl %esi leave - ret + RET SYM_FUNC_END(FPU_shrxs) --- a/arch/x86/mm/mem_encrypt_boot.S +++ b/arch/x86/mm/mem_encrypt_boot.S @@ -65,7 +65,7 @@ SYM_FUNC_START(sme_encrypt_execute) movq %rbp, %rsp /* Restore original stack pointer */ pop %rbp - ret + RET SYM_FUNC_END(sme_encrypt_execute) SYM_FUNC_START(__enc_copy) @@ -151,6 +151,6 @@ SYM_FUNC_START(__enc_copy) pop %r12 pop %r15 - ret + RET .L__enc_copy_end: SYM_FUNC_END(__enc_copy) --- a/arch/x86/platform/efi/efi_stub_32.S +++ b/arch/x86/platform/efi/efi_stub_32.S @@ -56,5 +56,5 @@ SYM_FUNC_START(efi_call_svam) movl 16(%esp), %ebx leave - ret + RET SYM_FUNC_END(efi_call_svam) --- a/arch/x86/platform/efi/efi_stub_64.S +++ b/arch/x86/platform/efi/efi_stub_64.S @@ -23,5 +23,5 @@ SYM_FUNC_START(__efi_call) mov %rsi, %rcx CALL_NOSPEC rdi leave - ret + RET SYM_FUNC_END(__efi_call) --- a/arch/x86/platform/efi/efi_thunk_64.S +++ b/arch/x86/platform/efi/efi_thunk_64.S @@ -63,7 +63,7 @@ SYM_CODE_START(__efi64_thunk) 1: movq 24(%rsp), %rsp pop %rbx pop %rbp - retq + RET .code32 2: pushl $__KERNEL_CS --- a/arch/x86/platform/olpc/xo1-wakeup.S +++ b/arch/x86/platform/olpc/xo1-wakeup.S @@ -77,7 +77,7 @@ pushfl popl saved_context_eflags - ret + RET restore_registers: movl saved_context_ebp, %ebp @@ -88,7 +88,7 @@ pushl saved_context_eflags popfl - ret + RET SYM_CODE_START(do_olpc_suspend_lowlevel) call save_processor_state @@ -109,7 +109,7 @@ SYM_CODE_START(do_olpc_suspend_lowlevel) call restore_registers call restore_processor_state - ret + RET SYM_CODE_END(do_olpc_suspend_lowlevel) .data --- a/arch/x86/power/hibernate_asm_32.S +++ b/arch/x86/power/hibernate_asm_32.S @@ -32,7 +32,7 @@ SYM_FUNC_START(swsusp_arch_suspend) FRAME_BEGIN call swsusp_save FRAME_END - ret + RET SYM_FUNC_END(swsusp_arch_suspend) SYM_CODE_START(restore_image) @@ -108,5 +108,5 @@ SYM_FUNC_START(restore_registers) /* tell the hibernation core that we've just restored the memory */ movl %eax, in_suspend - ret + RET SYM_FUNC_END(restore_registers) --- a/arch/x86/power/hibernate_asm_64.S +++ b/arch/x86/power/hibernate_asm_64.S @@ -66,7 +66,7 @@ SYM_FUNC_START(restore_registers) /* tell the hibernation core that we've just restored the memory */ movq %rax, in_suspend(%rip) - ret + RET SYM_FUNC_END(restore_registers) SYM_FUNC_START(swsusp_arch_suspend) @@ -96,7 +96,7 @@ SYM_FUNC_START(swsusp_arch_suspend) FRAME_BEGIN call swsusp_save FRAME_END - ret + RET SYM_FUNC_END(swsusp_arch_suspend) SYM_FUNC_START(restore_image) --- a/arch/x86/um/checksum_32.S +++ b/arch/x86/um/checksum_32.S @@ -110,7 +110,7 @@ unsigned int csum_partial(const unsigned 7: popl %ebx popl %esi - ret + RET #else @@ -208,7 +208,7 @@ unsigned int csum_partial(const unsigned 80: popl %ebx popl %esi - ret + RET #endif EXPORT_SYMBOL(csum_partial) --- a/arch/x86/um/setjmp_32.S +++ b/arch/x86/um/setjmp_32.S @@ -34,7 +34,7 @@ movl %esi,12(%edx) movl %edi,16(%edx) movl %ecx,20(%edx) # Return address - ret + RET .size kernel_setjmp,.-kernel_setjmp --- a/arch/x86/um/setjmp_64.S +++ b/arch/x86/um/setjmp_64.S @@ -33,7 +33,7 @@ movq %r14,40(%rdi) movq %r15,48(%rdi) movq %rsi,56(%rdi) # Return address - ret + RET .size kernel_setjmp,.-kernel_setjmp --- a/arch/x86/xen/xen-asm.S +++ b/arch/x86/xen/xen-asm.S @@ -28,7 +28,7 @@ */ SYM_FUNC_START(xen_irq_disable_direct) movb $1, PER_CPU_VAR(xen_vcpu_info) + XEN_vcpu_info_mask - ret + RET SYM_FUNC_END(xen_irq_disable_direct) /* @@ -57,7 +57,7 @@ SYM_FUNC_START(check_events) pop %rcx pop %rax FRAME_END - ret + RET SYM_FUNC_END(check_events) /* @@ -83,7 +83,7 @@ SYM_FUNC_START(xen_irq_enable_direct) call check_events 1: FRAME_END - ret + RET SYM_FUNC_END(xen_irq_enable_direct) /* @@ -99,7 +99,7 @@ SYM_FUNC_START(xen_save_fl_direct) testb $0xff, PER_CPU_VAR(xen_vcpu_info) + XEN_vcpu_info_mask setz %ah addb %ah, %ah - ret + RET SYM_FUNC_END(xen_save_fl_direct) SYM_FUNC_START(xen_read_cr2) @@ -107,14 +107,14 @@ SYM_FUNC_START(xen_read_cr2) _ASM_MOV PER_CPU_VAR(xen_vcpu), %_ASM_AX _ASM_MOV XEN_vcpu_info_arch_cr2(%_ASM_AX), %_ASM_AX FRAME_END - ret + RET SYM_FUNC_END(xen_read_cr2); SYM_FUNC_START(xen_read_cr2_direct) FRAME_BEGIN _ASM_MOV PER_CPU_VAR(xen_vcpu_info) + XEN_vcpu_info_arch_cr2, %_ASM_AX FRAME_END - ret + RET SYM_FUNC_END(xen_read_cr2_direct); .popsection --- a/arch/x86/xen/xen-head.S +++ b/arch/x86/xen/xen-head.S @@ -26,7 +26,7 @@ SYM_CODE_START(hypercall_page) .rept (PAGE_SIZE / 32) UNWIND_HINT_FUNC .skip 31, 0x90 - ret + RET .endr #define HYPERCALL(n) \ --- a/samples/ftrace/ftrace-direct-modify.c +++ b/samples/ftrace/ftrace-direct-modify.c @@ -31,7 +31,7 @@ asm ( " call my_direct_func1\n" " leave\n" " .size my_tramp1, .-my_tramp1\n" -" ret\n" + ASM_RET " .type my_tramp2, @function\n" " .globl my_tramp2\n" " my_tramp2:" @@ -39,7 +39,7 @@ asm ( " movq %rsp, %rbp\n" " call my_direct_func2\n" " leave\n" -" ret\n" + ASM_RET " .size my_tramp2, .-my_tramp2\n" " .popsection\n" ); --- a/samples/ftrace/ftrace-direct-too.c +++ b/samples/ftrace/ftrace-direct-too.c @@ -31,7 +31,7 @@ asm ( " popq %rsi\n" " popq %rdi\n" " leave\n" -" ret\n" + ASM_RET " .size my_tramp, .-my_tramp\n" " .popsection\n" ); --- a/samples/ftrace/ftrace-direct.c +++ b/samples/ftrace/ftrace-direct.c @@ -25,7 +25,7 @@ asm ( " call my_direct_func\n" " popq %rdi\n" " leave\n" -" ret\n" + ASM_RET " .size my_tramp, .-my_tramp\n" " .popsection\n" ); --- a/scripts/Makefile.build +++ b/scripts/Makefile.build @@ -234,7 +234,8 @@ objtool_args = \ $(if $(CONFIG_GCOV_KERNEL)$(CONFIG_LTO_CLANG), --no-unreachable)\ $(if $(CONFIG_RETPOLINE), --retpoline) \ $(if $(CONFIG_X86_SMAP), --uaccess) \ - $(if $(CONFIG_FTRACE_MCOUNT_USE_OBJTOOL), --mcount) + $(if $(CONFIG_FTRACE_MCOUNT_USE_OBJTOOL), --mcount) \ + $(if $(CONFIG_SLS), --sls) cmd_objtool = $(if $(objtool-enabled), ; $(objtool) $(objtool_args) $@) cmd_gen_objtooldep = $(if $(objtool-enabled), { echo ; echo '$@: $$(wildcard $(objtool))' ; } >> $(dot-target).cmd) --- a/tools/objtool/arch/x86/decode.c +++ b/tools/objtool/arch/x86/decode.c @@ -531,6 +531,11 @@ int arch_decode_instruction(struct objto } break; + case 0xcc: + /* int3 */ + *type = INSN_TRAP; + break; + case 0xe3: /* jecxz/jrcxz */ *type = INSN_JUMP_CONDITIONAL; @@ -697,10 +702,10 @@ const char *arch_ret_insn(int len) { static const char ret[5][5] = { { BYTE_RET }, - { BYTE_RET, BYTES_NOP1 }, - { BYTE_RET, BYTES_NOP2 }, - { BYTE_RET, BYTES_NOP3 }, - { BYTE_RET, BYTES_NOP4 }, + { BYTE_RET, 0xcc }, + { BYTE_RET, 0xcc, BYTES_NOP1 }, + { BYTE_RET, 0xcc, BYTES_NOP2 }, + { BYTE_RET, 0xcc, BYTES_NOP3 }, }; if (len < 1 || len > 5) { --- a/tools/objtool/builtin-check.c +++ b/tools/objtool/builtin-check.c @@ -20,7 +20,7 @@ #include <objtool/objtool.h> bool no_fp, no_unreachable, retpoline, module, backtrace, uaccess, stats, - validate_dup, vmlinux, mcount, noinstr, backup; + validate_dup, vmlinux, mcount, noinstr, backup, sls; static const char * const check_usage[] = { "objtool check [<options>] file.o", @@ -45,6 +45,7 @@ const struct option check_options[] = { OPT_BOOLEAN('l', "vmlinux", &vmlinux, "vmlinux.o validation"), OPT_BOOLEAN('M', "mcount", &mcount, "generate __mcount_loc"), OPT_BOOLEAN('B', "backup", &backup, "create .orig files before modification"), + OPT_BOOLEAN('S', "sls", &sls, "validate straight-line-speculation"), OPT_END(), }; --- a/tools/objtool/check.c +++ b/tools/objtool/check.c @@ -3084,6 +3084,12 @@ static int validate_branch(struct objtoo switch (insn->type) { case INSN_RETURN: + if (next_insn && next_insn->type == INSN_TRAP) { + next_insn->ignore = true; + } else if (sls && !insn->retpoline_safe) { + WARN_FUNC("missing int3 after ret", + insn->sec, insn->offset); + } return validate_return(func, insn, &state); case INSN_CALL: @@ -3127,6 +3133,14 @@ static int validate_branch(struct objtoo break; case INSN_JUMP_DYNAMIC: + if (next_insn && next_insn->type == INSN_TRAP) { + next_insn->ignore = true; + } else if (sls && !insn->retpoline_safe) { + WARN_FUNC("missing int3 after indirect jump", + insn->sec, insn->offset); + } + + /* fallthrough */ case INSN_JUMP_DYNAMIC_CONDITIONAL: if (is_sibling_call(insn)) { ret = validate_sibling_call(file, insn, &state); --- a/tools/objtool/include/objtool/arch.h +++ b/tools/objtool/include/objtool/arch.h @@ -26,6 +26,7 @@ enum insn_type { INSN_CLAC, INSN_STD, INSN_CLD, + INSN_TRAP, INSN_OTHER, }; --- a/tools/objtool/include/objtool/builtin.h +++ b/tools/objtool/include/objtool/builtin.h @@ -9,7 +9,7 @@ extern const struct option check_options[]; extern bool no_fp, no_unreachable, retpoline, module, backtrace, uaccess, stats, - validate_dup, vmlinux, mcount, noinstr, backup; + validate_dup, vmlinux, mcount, noinstr, backup, sls; extern int cmd_parse_options(int argc, const char **argv, const char * const usage[]);
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