Messages in this thread | | | From | Andy Lutomirski <> | Subject | [PATCH 00/16] x86/asm changes for 4.1 for review | Date | Thu, 26 Feb 2015 14:40:23 -0800 |
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Hi all-
After much handwringing, painful review, and curation, here's round 1 of the x86/asm changes. (This is not intended to imply that there will or will not be a round 2.)
For ease of review for git users:
The following changes since commit 7453311d68f16a5c587c3cbf19563c9a4fbbd41a:
Merge branch 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip (2015-02-09 17:16:44 -0800)
are available in the git repository at:
git://git.kernel.org/pub/scm/linux/kernel/git/luto/linux.git
for you to fetch changes up to 4710be56d76ef994ddf59087aad98c000fbab9a4:
x86_64, entry: Remove a bogus ret_from_fork optimization (2015-02-26 07:09:36 -0800)
Ingo, if you like these, feel free to pull. I will try to review the scary change *again* this evening if I have time. In the mean time, these are queued as is for -next. I will remove them from my -next branch if they turn out to be buggy or if they end up in -tip in any form.
Andy Lutomirski (2): x86, entry: Remove int_check_syscall_exit_work x86_64, entry: Remove a bogus ret_from_fork optimization
Denys Vlasenko (14): x86: open-code register save/restore in trace_hardirqs thunks x86: introduce push/pop macros which generate CFI_REL_OFFSET and CFI_RESTORE x86: entry_64.S: fix wrong symbolic constant usage: R11->ARGOFFSET x86: entry_64.S: always allocate complete "struct pt_regs" x86: entry_64.S: fix comments. No code changes x86: code shrink in paranoid_exit x86: mass removal of ARGOFFSET. No code changes x86: add comments about various syscall instructions, no code changes x86: entry_64.S: move save_paranoid and ret_from_fork closer to their users x86: entry_64.S: rename save_paranoid to paranoid_entry, no code changes x86: ia32entry.S: fold IA32_ARG_FIXUP macro into its callers x86: entry_64.S: use more understandable constants x86: ia32entry.S: use more understandable constant x86: entry.S: simplify optimistic SYSRET
arch/x86/ia32/ia32entry.S | 342 ++++++++++++---------- arch/x86/include/asm/calling.h | 267 ++++++++--------- arch/x86/include/asm/dwarf2.h | 24 ++ arch/x86/include/asm/irqflags.h | 4 +- arch/x86/include/asm/ptrace.h | 13 +- arch/x86/include/uapi/asm/ptrace-abi.h | 16 +- arch/x86/include/uapi/asm/ptrace.h | 13 +- arch/x86/kernel/entry_32.S | 21 +- arch/x86/kernel/entry_64.S | 510 ++++++++++++++++----------------- arch/x86/lib/atomic64_cx8_32.S | 50 ++-- arch/x86/lib/checksum_32.S | 60 ++-- arch/x86/lib/msr-reg.S | 24 +- arch/x86/lib/rwsem.S | 44 ++- arch/x86/lib/thunk_32.S | 18 +- arch/x86/lib/thunk_64.S | 28 +- 15 files changed, 724 insertions(+), 710 deletions(-)
-- 2.1.0
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