This is a note to let you know that I've just added the patch titled
x86: Move gds_ucode_mitigated() declaration to header
to the 5.10-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:
x86-move-gds_ucode_mitigated-declaration-to-header.patch
and it can be found in the queue-5.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From eb3515dc99c7c85f4170b50838136b2a193f8012 Mon Sep 17 00:00:00 2001
From: Arnd Bergmann <arnd@xxxxxxxx>
Date: Wed, 9 Aug 2023 15:05:00 +0200
Subject: x86: Move gds_ucode_mitigated() declaration to header
From: Arnd Bergmann <arnd@xxxxxxxx>
commit eb3515dc99c7c85f4170b50838136b2a193f8012 upstream.
The declaration got placed in the .c file of the caller, but that
causes a warning for the definition:
arch/x86/kernel/cpu/bugs.c:682:6: error: no previous prototype for 'gds_ucode_mitigated' [-Werror=missing-prototypes]
Move it to a header where both sides can observe it instead.
Fixes: 81ac7e5d74174 ("KVM: Add GDS_NO support to KVM")
Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
Signed-off-by: Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>
Tested-by: Daniel Sneddon <daniel.sneddon@xxxxxxxxxxxxxxx>
Cc: stable@xxxxxxxxxx
Link: https://lore.kernel.org/all/20230809130530.1913368-2-arnd%40kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/x86/include/asm/processor.h | 2 ++
arch/x86/kvm/x86.c | 2 --
2 files changed, 2 insertions(+), 2 deletions(-)
--- a/arch/x86/include/asm/processor.h
+++ b/arch/x86/include/asm/processor.h
@@ -864,4 +864,6 @@ enum mds_mitigations {
MDS_MITIGATION_VMWERV,
};
+extern bool gds_ucode_mitigated(void);
+
#endif /* _ASM_X86_PROCESSOR_H */
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -255,8 +255,6 @@ static struct kmem_cache *x86_fpu_cache;
static struct kmem_cache *x86_emulator_cache;
-extern bool gds_ucode_mitigated(void);
-
/*
* When called, it means the previous get/set msr reached an invalid msr.
* Return true if we want to ignore/silent this failed msr access.
Patches currently in stable-queue which might be from arnd@xxxxxxxx are
queue-5.10/x86-speculation-add-cpu_show_gds-prototype.patch
queue-5.10/x86-move-gds_ucode_mitigated-declaration-to-header.patch
