From a84de2fa962c1b0551653fe245d6cb5f6129179c Mon Sep 17 00:00:00 2001 From: Tony W Wang-oc Date: Fri, 17 Jan 2020 10:24:32 +0800 Subject: x86/speculation/swapgs: Exclude Zhaoxin CPUs from SWAPGS vulnerability New Zhaoxin family 7 CPUs are not affected by the SWAPGS vulnerability. So mark these CPUs in the cpu vulnerability whitelist accordingly. Signed-off-by: Tony W Wang-oc Signed-off-by: Thomas Gleixner Link: https://lore.kernel.org/r/1579227872-26972-3-git-send-email-TonyWWang-oc@zhaoxin.com --- arch/x86/kernel/cpu/common.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c index 6048bd374133..ca4a0d2cc88f 100644 --- a/arch/x86/kernel/cpu/common.c +++ b/arch/x86/kernel/cpu/common.c @@ -1087,8 +1087,8 @@ static const __initconst struct x86_cpu_id cpu_vuln_whitelist[] = { VULNWL_HYGON(X86_FAMILY_ANY, NO_MELTDOWN | NO_L1TF | NO_MDS | NO_SWAPGS | NO_ITLB_MULTIHIT), /* Zhaoxin Family 7 */ - VULNWL(CENTAUR, 7, X86_MODEL_ANY, NO_SPECTRE_V2), - VULNWL(ZHAOXIN, 7, X86_MODEL_ANY, NO_SPECTRE_V2), + VULNWL(CENTAUR, 7, X86_MODEL_ANY, NO_SPECTRE_V2 | NO_SWAPGS), + VULNWL(ZHAOXIN, 7, X86_MODEL_ANY, NO_SPECTRE_V2 | NO_SWAPGS), {} }; -- cgit v1.2.3