linux-kernel - [PATCH 0/7 -v2] Factor out, clean up and use the use_/unuse_temporary

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Message-ID: <20250402094540.3586683-1-mingo@kernel.org>
Date: Wed,  2 Apr 2025 11:45:33 +0200
From: Ingo Molnar <mingo@...nel.org>
To: linux-kernel@...r.kernel.org
Cc: Andy Lutomirski <luto@...nel.org>,
	Rik van Riel <riel@...riel.com>,
	"H . Peter Anvin" <hpa@...or.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Ingo Molnar <mingo@...nel.org>
Subject: [PATCH 0/7 -v2] Factor out, clean up and use the use_/unuse_temporary_mm() APIs some more

These are a couple of cleanups and micro-optimizations by
Andy and Peter around the x86 use_/unuse_temporary_mm() APIs,
which were posted back in November, and which I merged on top
of the WIP.x86/alternatives tree:

  git://git.kernel.org/pub/scm/linux/kernel/git/mingo/tip.git WIP.x86/mm

Thanks,

	Ingo

===============>

Andy Lutomirski (5):
  x86/events, x86/insn-eval: Remove incorrect current->active_mm references
  x86/mm: Make use_/unuse_temporary_mm() non-static
  x86/mm: Allow temporary MMs when IRQs are on
  x86/efi: Make efi_enter/leave_mm() use the use_/unuse_temporary_mm() machinery
  x86/mm: Opt-in to IRQs-off activate_mm()

Peter Zijlstra (2):
  x86/mm: Add 'mm' argument to unuse_temporary_mm()
  x86/mm: Remove 'mm' argument from unuse_temporary_mm() again

 arch/x86/Kconfig                   |  1 +
 arch/x86/events/core.c             |  9 ++++-
 arch/x86/include/asm/mmu_context.h |  5 ++-
 arch/x86/kernel/alternative.c      | 64 -----------------------------------
 arch/x86/lib/insn-eval.c           | 13 +++++--
 arch/x86/mm/tlb.c                  | 69 ++++++++++++++++++++++++++++++++++++++
 arch/x86/platform/efi/efi_64.c     |  7 ++--
 7 files changed, 94 insertions(+), 74 deletions(-)

-- 
2.45.2