FAILED: patch "[PATCH] x86/cpuid: Mark CPUID function 0x23 as being indexed" failed to apply to 5.15-stable tree

The patch below does not apply to the 5.15-stable tree.
If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <[email protected]>.

To reproduce the conflict and resubmit, you may use the following commands:

git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-5.15.y
git checkout FETCH_HEAD
git cherry-pick -x 108775fa28fe04a16f19a828a779689f3d0ea9f0
# <resolve conflicts, build, test, etc.>
git commit -s
git send-email --to '<[email protected]>' --in-reply-to '[email protected]' --subject-prefix 'PATCH 5.15.y' 'HEAD^..'

Thanks,
Sasha

------------------ original commit in Linus's tree ------------------

From 108775fa28fe04a16f19a828a779689f3d0ea9f0 Mon Sep 17 00:00:00 2001
From: Sean Christopherson <[email protected]>
Date: Thu, 22 Oct 2026 14:01:32 -0700
Subject: [PATCH] x86/cpuid: Mark CPUID function 0x23 as being indexed

Add function 0x23 to the set of CPUID functions that are indexed, as per the SDM and the many sub-leafs defined in leaf_types.h.

---
 arch/x86/include/asm/cpuid/api.h | 1 +
 1 file changed, 1 insertion(+)

index 2d9f3d4d63de6..759b12d94bbfe 100644
@@ -181,6 +181,7 @@ static __always_inline bool cpuid_function_is_indexed(u32 function)
 	case 0x1d:
 	case 0x1e:
 	case 0x1f:
+	case 0x23:
 	case 0x24:
 	case 0x8000001d:
 		return true;

2.53.0