Patch "Revert "x86/bugs: Use fixed addressing for VERW operand"" has been added to the 6.7-stable tree

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This is a note to let you know that I've just added the patch titled

    Revert "x86/bugs: Use fixed addressing for VERW operand"

to the 6.7-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     revert-x86-bugs-use-fixed-addressing-for-verw-operand.patch
and it can be found in the queue-6.7 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.


>From 532a0c57d7ff75e8f07d4e25cba4184989e2a241 Mon Sep 17 00:00:00 2001
From: Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>
Date: Tue, 12 Mar 2024 07:27:57 -0700
Subject: Revert "x86/bugs: Use fixed addressing for VERW operand"

From: Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>

commit 532a0c57d7ff75e8f07d4e25cba4184989e2a241 upstream.

This was reverts commit 8009479ee919b9a91674f48050ccbff64eafedaa.

It was originally in x86/urgent, but was deemed wrong so got zapped.
But in the meantime, x86/urgent had been merged into x86/apic to
resolve a conflict.  I didn't notice the merge so didn't zap it
from x86/apic and it managed to make it up with the x86/apic
material.

The reverted commit is known to cause some KASAN problems.

Signed-off-by: Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 arch/x86/include/asm/nospec-branch.h |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/arch/x86/include/asm/nospec-branch.h
+++ b/arch/x86/include/asm/nospec-branch.h
@@ -332,7 +332,7 @@
  * Note: Only the memory operand variant of VERW clears the CPU buffers.
  */
 .macro CLEAR_CPU_BUFFERS
-	ALTERNATIVE "", __stringify(verw mds_verw_sel), X86_FEATURE_CLEAR_CPU_BUF
+	ALTERNATIVE "", __stringify(verw _ASM_RIP(mds_verw_sel)), X86_FEATURE_CLEAR_CPU_BUF
 .endm
 
 #else /* __ASSEMBLY__ */


Patches currently in stable-queue which might be from dave.hansen@xxxxxxxxxxxxxxx are

queue-6.7/x86-bugs-use-fixed-addressing-for-verw-operand.patch
queue-6.7/revert-x86-bugs-use-fixed-addressing-for-verw-operand.patch




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