linux-kernel - [GIT PULL] x86/fpu updates for v6.17

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <aIh0TvRcSPfV0ULC@gmail.com>
Date: Tue, 29 Jul 2025 09:12:14 +0200
From: Ingo Molnar <mingo@...nel.org>
To: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: linux-kernel@...r.kernel.org, the arch/x86 maintainers <x86@...nel.org>,
	"Chang S. Bae" <chang.seok.bae@...el.com>,
	Oleg Nesterov <oleg@...hat.com>
Subject: [GIT PULL] x86/fpu updates for v6.17

Linus,

Please pull the latest x86/fpu Git tree from:

   git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git x86-fpu-2025-07-29

   # HEAD: 1cec9ac2d071cfd2da562241aab0ef701355762a x86/fpu: Delay instruction pointer fixup until after warning

x86 FPU changes for v6.17:

 - Most of the changes are related to the implementation of
   CET supervisor state support for guests, and its preparatory
   changes. (Chao Gao)

 - Improve/fix the debug output for unexpected FPU exceptions
   (Dave Hansen)

 Thanks,

	Ingo

------------------>
Chao Gao (4):
      x86/fpu/xstate: Differentiate default features for host and guest FPUs
      x86/fpu: Initialize guest FPU permissions from guest defaults
      x86/fpu: Initialize guest fpstate and FPU pseudo container from guest defaults
      x86/fpu: Remove xfd argument from __fpstate_reset()

Dave Hansen (1):
      x86/fpu: Delay instruction pointer fixup until after warning

Yang Weijiang (2):
      x86/fpu/xstate: Introduce "guest-only" supervisor xfeature set
      x86/fpu/xstate: Add CET supervisor xfeature support as a guest-only feature


 arch/x86/include/asm/fpu/types.h  | 49 +++++++++++++++++++++++++++++++-----
 arch/x86/include/asm/fpu/xstate.h |  9 ++++---
 arch/x86/kernel/fpu/core.c        | 53 ++++++++++++++++++++++++++++-----------
 arch/x86/kernel/fpu/init.c        |  1 +
 arch/x86/kernel/fpu/xstate.c      | 40 +++++++++++++++++++++++------
 arch/x86/mm/extable.c             |  5 ++--
 6 files changed, 124 insertions(+), 33 deletions(-)