From e574768f841ba600009da06b3027d9413dba868f Mon Sep 17 00:00:00 2001 From: Sean Christopherson Date: Mon, 2 Mar 2020 15:56:35 -0800 Subject: [PATCH] KVM: x86: Handle UMIP emulation CPUID adjustment in VMX code Move the CPUID adjustment for UMIP emulation into VMX code to eliminate an instance of the undesirable "unsigned f_* = *_supported ? F(*) : 0" pattern in the common CPUID handling code. No functional change intended. Reviewed-by: Vitaly Kuznetsov Signed-off-by: Sean Christopherson Signed-off-by: Paolo Bonzini --- arch/x86/kvm/cpuid.c | 2 -- arch/x86/kvm/vmx/vmx.c | 2 ++ 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/x86/kvm/cpuid.c b/arch/x86/kvm/cpuid.c index 99c4748..d7b3db0 100644 --- a/arch/x86/kvm/cpuid.c +++ b/arch/x86/kvm/cpuid.c @@ -331,7 +331,6 @@ static int __do_cpuid_func_emulated(struct kvm_cpuid_array *array, u32 func) static inline void do_cpuid_7_mask(struct kvm_cpuid_entry2 *entry) { - unsigned f_umip = kvm_x86_ops->umip_emulated() ? F(UMIP) : 0; unsigned f_intel_pt = kvm_x86_ops->pt_supported() ? F(INTEL_PT) : 0; unsigned f_la57; unsigned f_pku = kvm_x86_ops->pku_supported() ? F(PKU) : 0; @@ -374,7 +373,6 @@ static inline void do_cpuid_7_mask(struct kvm_cpuid_entry2 *entry) cpuid_entry_mask(entry, CPUID_7_ECX); /* Set LA57 based on hardware capability. */ entry->ecx |= f_la57; - entry->ecx |= f_umip; entry->ecx |= f_pku; /* PKU is not yet implemented for shadow paging. */ if (!tdp_enabled || !boot_cpu_has(X86_FEATURE_OSPKE)) diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c index 040c7e8..2f0897f 100644 --- a/arch/x86/kvm/vmx/vmx.c +++ b/arch/x86/kvm/vmx/vmx.c @@ -7135,6 +7135,8 @@ static void vmx_set_supported_cpuid(struct kvm_cpuid_entry2 *entry) cpuid_entry_set(entry, X86_FEATURE_MPX); if (boot_cpu_has(X86_FEATURE_INVPCID) && cpu_has_vmx_invpcid()) cpuid_entry_set(entry, X86_FEATURE_INVPCID); + if (vmx_umip_emulated()) + cpuid_entry_set(entry, X86_FEATURE_UMIP); break; default: break; -- 2.7.4