KVM: VMX: Also clear SGX EDECCSSA in KVM CPU caps when SGX is disabled

Upstream commit 7efb4d8a392a18e37fcdb5e77c111af6e9a9e2f2
Conflict: none

When SGX EDECCSSA support was added to KVM in commit 16a7fe3
("KVM/VMX: Allow exposing EDECCSSA user leaf function to KVM guest"), it
forgot to clear the X86_FEATURE_SGX_EDECCSSA bit in KVM CPU caps when
KVM SGX is disabled.  Fix it.

Intel-SIG: commit 7efb4d8a392a KVM: VMX: Also clear SGX EDECCSSA in KVM
CPU caps when SGX is disabled
Backport a SGX bug fix from upstream.

Fixes: 16a7fe3 ("KVM/VMX: Allow exposing EDECCSSA user leaf function to KVM guest")
Signed-off-by: Kai Huang <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Sean Christopherson <[email protected]>
[ Zhiquan Li: amend commit log ]
Signed-off-by: Zhiquan Li <[email protected]>

Author: kaihuang

arch/x86/kvm/vmx/vmx.c

@@ -7987,6 +7987,7 @@ static __init void vmx_set_cpu_caps(void)
 		kvm_cpu_cap_clear(X86_FEATURE_SGX_LC);
 		kvm_cpu_cap_clear(X86_FEATURE_SGX1);
 		kvm_cpu_cap_clear(X86_FEATURE_SGX2);
+		kvm_cpu_cap_clear(X86_FEATURE_SGX_EDECCSSA);
 	}
 
 	if (vmx_umip_emulated())