From: Pu Wen puwen@hygon.cn

[Upstream commit a5ef7d68cea1344cf524f04981c2b3f80bedbb0d]

Add mitigation for the speculative return stack overflow vulnerability which exists on Hygon processors too.

Signed-off-by: Pu Wen puwen@hygon.cn Signed-off-by: Ingo Molnar mingo@kernel.org Acked-by: Borislav Petkov (AMD) bp@alien8.de Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/tencent_4A14812842F104E93AA722EC939483CEFF05@qq.co... Signed-off-by: Ashwin Dayanand Kamat ashwin.kamat@broadcom.com --- arch/x86/kernel/cpu/common.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c index 4ecc6072e..8aa43c8ca 100644 --- a/arch/x86/kernel/cpu/common.c +++ b/arch/x86/kernel/cpu/common.c @@ -1168,7 +1168,7 @@ static const struct x86_cpu_id cpu_vuln_blacklist[] __initconst = { VULNBL_AMD(0x15, RETBLEED), VULNBL_AMD(0x16, RETBLEED), VULNBL_AMD(0x17, RETBLEED | SRSO), - VULNBL_HYGON(0x18, RETBLEED), + VULNBL_HYGON(0x18, RETBLEED | SRSO), VULNBL_AMD(0x19, SRSO), {} };