linux-kernel - [GIT PULL] x86/asm changes for v5.14

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Date:   Mon, 28 Jun 2021 09:22:14 +0200
From:   Ingo Molnar <mingo@...nel.org>
To:     Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     linux-kernel@...r.kernel.org, "H. Peter Anvin" <hpa@...or.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Borislav Petkov <bp@...en8.de>,
        Peter Zijlstra <peterz@...radead.org>,
        Andrew Morton <akpm@...ux-foundation.org>
Subject: [GIT PULL] x86/asm changes for v5.14

Linus,

Please pull the latest x86/asm git tree from:

   git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git x86-asm-2021-06-28

   # HEAD: 41f45fb045bcc20e71eb705b361356e715682162 x86/asm: Make <asm/asm.h> valid on cross-builds as well

Changes for this cycle:

 - Micro-optimize and standardize the do_syscall_64() calling convention
 - Make syscall entry flags clearing more conservative
 - Clean up syscall table handling
 - Clean up & standardize assembly macros, in preparation of FRED
 - Misc cleanups and fixes

 Thanks,

	Ingo

------------------>
H. Peter Anvin (1):
      x86/regs: Syscall_get_nr() returns -1 for a non-system call

H. Peter Anvin (Intel) (8):
      x86/asm: Have the __ASM_FORM macros handle commas in arguments
      x86/asm: Add _ASM_BYTES() macro for a .byte ... opcode sequence
      x86/asm: Use _ASM_BYTES() in <asm/nops.h>
      x86/entry: Unify definitions from <asm/calling.h> and <asm/ptrace-abi.h>
      x86/entry: Reverse arguments to do_syscall_64()
      x86/syscall: Unconditionally prototype {ia32,x32}_sys_call_table[]
      x86/syscall: Maximize MSR_SYSCALL_MASK
      x86/entry: Split PUSH_AND_CLEAR_REGS into two submacros

Ingo Molnar (1):
      x86/asm: Make <asm/asm.h> valid on cross-builds as well


 arch/x86/entry/calling.h          |  45 ++-------
 arch/x86/entry/common.c           |   2 +-
 arch/x86/entry/entry_64.S         |   4 +-
 arch/x86/include/asm/asm.h        |  27 +++---
 arch/x86/include/asm/nops.h       |  24 ++---
 arch/x86/include/asm/syscall.h    |  13 ++-
 arch/x86/kernel/cpu/common.c      |  12 ++-
 arch/x86/kernel/head_64.S         |   6 +-
 arch/x86/kernel/ptrace.c          |   2 +-
 arch/x86/kernel/signal.c          |   4 +-
 tools/arch/x86/include/asm/asm.h  | 193 ++++++++++++++++++++++++++++++++++++++
 tools/arch/x86/include/asm/nops.h |  24 ++---
 12 files changed, 262 insertions(+), 94 deletions(-)
 create mode 100644 tools/arch/x86/include/asm/asm.h