This is a note to let you know that I've just added the patch titled
x86/srso: Add SRSO mitigation for Hygon processors
to the 5.15-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-srso-add-srso-mitigation-for-hygon-processors.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From a5ef7d68cea1344cf524f04981c2b3f80bedbb0d Mon Sep 17 00:00:00 2001
From: Pu Wen <puwen@xxxxxxxx>
Date: Thu, 28 Sep 2023 14:59:16 +0800
Subject: x86/srso: Add SRSO mitigation for Hygon processors
From: Pu Wen <puwen@xxxxxxxx>
commit a5ef7d68cea1344cf524f04981c2b3f80bedbb0d upstream.
Add mitigation for the speculative return stack overflow vulnerability
which exists on Hygon processors too.
Signed-off-by: Pu Wen <puwen@xxxxxxxx>
Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx>
Acked-by: Borislav Petkov (AMD) <bp@xxxxxxxxx>
Cc: <stable@xxxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/tencent_4A14812842F104E93AA722EC939483CEFF05@xxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/x86/kernel/cpu/common.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/x86/kernel/cpu/common.c
+++ b/arch/x86/kernel/cpu/common.c
@@ -1172,7 +1172,7 @@ static const struct x86_cpu_id cpu_vuln_
VULNBL_AMD(0x15, RETBLEED),
VULNBL_AMD(0x16, RETBLEED),
VULNBL_AMD(0x17, RETBLEED | SMT_RSB | SRSO),
- VULNBL_HYGON(0x18, RETBLEED | SMT_RSB),
+ VULNBL_HYGON(0x18, RETBLEED | SMT_RSB | SRSO),
VULNBL_AMD(0x19, SRSO),
{}
};
Patches currently in stable-queue which might be from puwen@xxxxxxxx are
queue-5.15/x86-srso-add-srso-mitigation-for-hygon-processors.patch
