Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67;
From:   Fenghua Yu <fenghua.yu@intel.com>
To:     "Thomas Gleixner" <tglx@linutronix.de>,
        "Ingo Molnar" <mingo@redhat.com>, "Borislav Petkov" <bp@alien8.de>,
        "H Peter Anvin" <hpa@zytor.com>,
        "Paolo Bonzini" <pbonzini@redhat.com>,
        "Dave Hansen" <dave.hansen@intel.com>,
        "Ashok Raj" <ashok.raj@intel.com>,
        "Peter Zijlstra" <peterz@infradead.org>,
        "Ravi V Shankar" <ravi.v.shankar@intel.com>,
        "Xiaoyao Li " <xiaoyao.li@intel.com>
Cc:     "linux-kernel" <linux-kernel@vger.kernel.org>,
        "x86" <x86@kernel.org>, kvm@vger.kernel.org,
        Xiaoyao Li <xiaoyao.li@linux.intel.com>
Subject: [PATCH v4 15/17] kvm: x86: Report CORE_CAPABILITY on GET_SUPPORTED_CPUID
Date:   Fri,  1 Mar 2019 18:45:09 -0800
Message-Id: <1551494711-213533-16-git-send-email-fenghua.yu@intel.com>
In-Reply-To: <1551494711-213533-1-git-send-email-fenghua.yu@intel.com>
References: <1551494711-213533-1-git-send-email-fenghua.yu@intel.com>
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

From: Xiaoyao Li <xiaoyao.li@linux.intel.com>

In the latest Intel SDM, CPUID.(EAX=7H,ECX=0):EDX[30] will enumerate
the presence of the IA32_CORE_CAPABILITY MSR.

Update GET_SUPPORTED_CPUID to expose this feature bit to user space, so
that user space know this bit can be enabled in CPUID.

Signed-off-by: Xiaoyao Li <xiaoyao.li@linux.intel.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 c07958b59f50..e0e17b9c65da 100644
--- a/arch/x86/kvm/cpuid.c
+++ b/arch/x86/kvm/cpuid.c
@@ -410,7 +410,8 @@ static inline int __do_cpuid_ent(struct kvm_cpuid_entry2 *entry, u32 function,
 	/* cpuid 7.0.edx*/
 	const u32 kvm_cpuid_7_0_edx_x86_features =
 		F(AVX512_4VNNIW) | F(AVX512_4FMAPS) | F(SPEC_CTRL) |
-		F(SPEC_CTRL_SSBD) | F(ARCH_CAPABILITIES) | F(INTEL_STIBP);
+		F(SPEC_CTRL_SSBD) | F(ARCH_CAPABILITIES) | F(CORE_CAPABILITY) |
+		F(INTEL_STIBP);
 
 	/* all calls to cpuid_count() should be made on the same cpu */
 	get_cpu();
-- 
2.7.4