mainline inclusion from mainline-5.6 commit a84de2fa962c1b0551653fe245d6cb5f6129179c category: x86/speculation/swapgs

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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 TonyWWang-oc@zhaoxin.com Signed-off-by: Thomas Gleixner tglx@linutronix.de Link: https://lore.kernel.org/r/1579227872-26972-3-git-send-email-TonyWWang-oc@zha... Signed-off-by: LeoLiu-oc LeoLiu-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 246f98153240..1d83e5f7c5a8 100644 --- a/arch/x86/kernel/cpu/common.c +++ b/arch/x86/kernel/cpu/common.c @@ -1017,8 +1017,8 @@ 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), {} };