linux-kernel - [GIT PULL] x86/asm changes for v5.6

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Date:   Tue, 28 Jan 2020 17:59:06 +0100
From:   Ingo Molnar <mingo@...nel.org>
To:     Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     linux-kernel@...r.kernel.org, Thomas Gleixner <tglx@...utronix.de>,
        Borislav Petkov <bp@...en8.de>,
        Peter Zijlstra <a.p.zijlstra@...llo.nl>,
        Andrew Morton <akpm@...ux-foundation.org>
Subject: [GIT PULL] x86/asm changes for v5.6

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(-)