Messages in this thread | | | Date | Fri, 2 Nov 2018 01:45:40 -0700 (PDT) | From | Zhenzhong Duan <> | Subject | [PATCH v3 0/2] Enable retpoline support only when compiler support |
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According to PeterZ's suggestion in https://lkml.org/lkml/2018/9/18/1016, hard bind retpoline with compiler support and remove minimal stuff.
Tested with both CONFIG_RETPOLINE enabled and disabled.
-v3: Add Suggested-by[Ingo] Break build if compiler doesn't support retpoline[Dwmw,Tglx,Ingo]
-v2: Add compiler support check in Kconfig [Masahiro] Drop 3rd patch as __insn_is_indirect_jump() may be used in some corner case.[PeterZ]
Zhenzhong Duan (2): retpolines: Only enable retpoline when compiler support it retpolines: Remove the minimal stuff of retpoline support
arch/x86/Kconfig | 4 ---- arch/x86/Makefile | 5 +++-- arch/x86/include/asm/nospec-branch.h | 12 ++++++------ arch/x86/kernel/cpu/bugs.c | 13 ++----------- scripts/Makefile.build | 2 -- 5 files changed, 11 insertions(+), 25 deletions(-)
-- 1.8.3.1
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