linux-kernel - [GIT pull] x86/urgent for v6.16-rc7

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Message-ID: <175301303889.263023.7762556142250207604.tglx@xen13>
Date: Sun, 20 Jul 2025 14:05:01 +0200 (CEST)
From: Thomas Gleixner <tglx@...utronix.de>
To: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: linux-kernel@...r.kernel.org, x86@...nel.org
Subject: [GIT pull] x86/urgent for v6.16-rc7

Linus,

please pull the latest x86/urgent branch from:

   git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git x86-urgent-2025-07-20

up to:  6b995d01683f: x86/sev: Work around broken noinstr on GCC

A single fix for a GCC wreckage, which emits a KCSAN instrumentation call
in __sev_es_nmi_complete() despite the function being annotated with
'noinstr'. As all functions in that source file are noinstr, exclude the
whole file from KCSAN in the Makefile to cure it.

Thanks,

	tglx

------------------>
Ard Biesheuvel (1):
      x86/sev: Work around broken noinstr on GCC


 arch/x86/coco/sev/Makefile | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/x86/coco/sev/Makefile b/arch/x86/coco/sev/Makefile
index db3255b979bd..342d79f0ab6a 100644
--- a/arch/x86/coco/sev/Makefile
+++ b/arch/x86/coco/sev/Makefile
@@ -5,5 +5,6 @@ obj-y += core.o sev-nmi.o vc-handle.o
 # Clang 14 and older may fail to respect __no_sanitize_undefined when inlining
 UBSAN_SANITIZE_sev-nmi.o	:= n
 
-# GCC may fail to respect __no_sanitize_address when inlining
+# GCC may fail to respect __no_sanitize_address or __no_kcsan when inlining
 KASAN_SANITIZE_sev-nmi.o	:= n
+KCSAN_SANITIZE_sev-nmi.o	:= n