linux-kernel - [PATCH v2 34/49] KVM: x86: Advertise HYPERVISOR in KVM_GET_SUPPORTED

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Date: Fri, 17 May 2024 10:39:11 -0700
From: Sean Christopherson <seanjc@...gle.com>
To: Paolo Bonzini <pbonzini@...hat.com>, Sean Christopherson <seanjc@...gle.com>, 
	Vitaly Kuznetsov <vkuznets@...hat.com>
Cc: kvm@...r.kernel.org, linux-kernel@...r.kernel.org, 
	Hou Wenlong <houwenlong.hwl@...group.com>, Kechen Lu <kechenl@...dia.com>, 
	Oliver Upton <oliver.upton@...ux.dev>, Maxim Levitsky <mlevitsk@...hat.com>, 
	Binbin Wu <binbin.wu@...ux.intel.com>, Yang Weijiang <weijiang.yang@...el.com>, 
	Robert Hoo <robert.hoo.linux@...il.com>
Subject: [PATCH v2 34/49] KVM: x86: Advertise HYPERVISOR in KVM_GET_SUPPORTED_CPUID

Unconditionally advertise "support" for the HYPERVISOR feature in CPUID,
as the flag simply communicates to the guest that's it's running under a
hypervisor.

Signed-off-by: Sean Christopherson <seanjc@...gle.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 d1f427284ccc..de898d571faa 100644
--- a/arch/x86/kvm/cpuid.c
+++ b/arch/x86/kvm/cpuid.c
@@ -681,7 +681,8 @@ void kvm_set_cpu_caps(void)
 		F(PCID) | 0 /* Reserved, DCA */ | F(XMM4_1) |
 		F(XMM4_2) | EMUL_F(X2APIC) | F(MOVBE) | F(POPCNT) |
 		EMUL_F(TSC_DEADLINE_TIMER) | F(AES) | F(XSAVE) |
-		0 /* OSXSAVE */ | F(AVX) | F(F16C) | F(RDRAND)
+		0 /* OSXSAVE */ | F(AVX) | F(F16C) | F(RDRAND) |
+		EMUL_F(HYPERVISOR)
 	);
 
 	kvm_cpu_cap_init(CPUID_1_EDX,
-- 
2.45.0.215.g3402c0e53f-goog