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

From: Ingo Molnar
Date: Tue Jul 29 2025 - 03:12:26 EST


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(-)