linux-kernel - [PATCH v2 3/4] x86: Expose SERIALIZE for supported cpuid

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Date:   Tue,  7 Jul 2020 10:16:22 +0800
From:   Cathy Zhang <cathy.zhang@...el.com>
To:     kvm@...r.kernel.org, linux-kernel@...r.kernel.org, x86@...nel.org
Cc:     pbonzini@...hat.com, sean.j.christopherson@...el.com,
        vkuznets@...hat.com, wanpengli@...cent.com, jmattson@...gle.com,
        joro@...tes.org, tglx@...utronix.de, mingo@...hat.com,
        bp@...en8.de, hpa@...or.com, ricardo.neri-calderon@...ux.intel.com,
        kyung.min.park@...el.com, jpoimboe@...hat.com,
        gregkh@...uxfoundation.org, ak@...ux.intel.com,
        dave.hansen@...el.com, tony.luck@...el.com,
        ravi.v.shankar@...el.com, Cathy Zhang <cathy.zhang@...el.com>
Subject: [PATCH v2 3/4] x86: Expose SERIALIZE for supported cpuid

SERIALIZE instruction is supported by intel processors,
like Sapphire Rapids. Expose it in KVM supported cpuid.

Signed-off-by: Cathy Zhang <cathy.zhang@...el.com>
---
 arch/x86/kvm/cpuid.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/x86/kvm/cpuid.c b/arch/x86/kvm/cpuid.c
index 8a294f9..e603aeb 100644
--- a/arch/x86/kvm/cpuid.c
+++ b/arch/x86/kvm/cpuid.c
@@ -341,7 +341,8 @@ void kvm_set_cpu_caps(void)
 	kvm_cpu_cap_mask(CPUID_7_EDX,
 		F(AVX512_4VNNIW) | F(AVX512_4FMAPS) | F(SPEC_CTRL) |
 		F(SPEC_CTRL_SSBD) | F(ARCH_CAPABILITIES) | F(INTEL_STIBP) |
-		F(MD_CLEAR) | F(AVX512_VP2INTERSECT) | F(FSRM)
+		F(MD_CLEAR) | F(AVX512_VP2INTERSECT) | F(FSRM) |
+		F(SERIALIZE)
 	);
 
 	/* TSC_ADJUST and ARCH_CAPABILITIES are emulated in software. */
-- 
1.8.3.1