Messages in this thread | | | Date | Tue, 28 Jan 2020 17:59:06 +0100 | From | Ingo Molnar <> | Subject | [GIT PULL] x86/asm changes for v5.6 |
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Linus,
Please pull the latest x86-asm-for-linus git tree from:
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git x86-asm-for-linus
# HEAD: 183ef7adf4ed638ac0fb0c3c9a71fc00e8512b61 x86/boot: Simplify calculation of output address
Misc updates:
- Remove last remaining calls to exception_enter/exception_exit() and simplify the entry code some more.
- Remove force_iret()
- Add support for "Fast Short Rep Mov", which is available starting with Ice Lake Intel CPUs - and make the x86 assembly version of memmove() use REP MOV for all sizes when FSRM is available.
- Micro-optimize/simplify the 32-bit boot code a bit.
- Use a more future-proof SYSRET instruction mnemonic
Thanks,
Ingo
------------------> Arvind Sankar (1): x86/boot: Simplify calculation of output address
Brian Gerst (1): x86: Remove force_iret()
Frederic Weisbecker (2): x86/context-tracking: Remove exception_enter/exit() from do_page_fault() x86/context-tracking: Remove exception_enter/exit() from KVM_PV_REASON_PAGE_NOT_PRESENT async page fault
Jan Beulich (1): x86/entry/64: Add instruction suffix to SYSRET
Tony Luck (1): x86/cpufeatures: Add support for fast short REP; MOVSB
arch/x86/boot/compressed/head_32.S | 8 +++----- arch/x86/entry/entry_64.S | 2 +- arch/x86/ia32/ia32_signal.c | 2 -- arch/x86/include/asm/cpufeatures.h | 1 + arch/x86/include/asm/ptrace.h | 16 ---------------- arch/x86/include/asm/thread_info.h | 9 --------- arch/x86/kernel/kvm.c | 4 ---- arch/x86/kernel/process_32.c | 1 - arch/x86/kernel/process_64.c | 1 - arch/x86/kernel/signal.c | 2 -- arch/x86/kernel/vm86_32.c | 1 - arch/x86/lib/memmove_64.S | 7 ++++--- arch/x86/mm/fault.c | 39 ++++++++++++-------------------------- 13 files changed, 21 insertions(+), 72 deletions(-)
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