linux-kernel - [GIT PULL] x86/asm updates for v5.10

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Message-ID: <20201012110557.GK25311@zn.tnic>
Date:   Mon, 12 Oct 2020 13:05:57 +0200
From:   Borislav Petkov <bp@...e.de>
To:     Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     x86-ml <x86@...nel.org>, lkml <linux-kernel@...r.kernel.org>
Subject: [GIT PULL] x86/asm updates for v5.10

Hi Linus,

please pull two asm wrapper fixes.

Thx.

---

The following changes since commit f75aef392f869018f78cfedf3c320a6b3fcfda6b:

  Linux 5.9-rc3 (2020-08-30 16:01:54 -0700)

are available in the Git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git tags/x86_asm_for_v5.10

for you to fetch changes up to aa5cacdc29d76a005cbbee018a47faa6e724dd2d:

  x86/asm: Replace __force_order with a memory clobber (2020-10-01 10:31:48 +0200)

----------------------------------------------------------------
* Use XORL instead of XORQ to avoid a REX prefix and save some bytes in
the .fixup section, by Uros Bizjak.

* Replace __force_order dummy variable with a memory clobber to fix LLVM
requiring a definition for former and to prevent memory accesses from
still being cached/reordered, by Arvind Sankar.

----------------------------------------------------------------
Arvind Sankar (1):
      x86/asm: Replace __force_order with a memory clobber

Uros Bizjak (1):
      x86/uaccess: Use XORL %0,%0 in __get_user_asm()

 arch/x86/boot/compressed/pgtable_64.c |  9 ---------
 arch/x86/include/asm/special_insns.h  | 28 +++++++++++++++-------------
 arch/x86/include/asm/uaccess.h        |  2 +-
 arch/x86/kernel/cpu/common.c          |  4 ++--
 4 files changed, 18 insertions(+), 25 deletions(-)

-- 
Regards/Gruss,
    Boris.

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