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KVM: x86: Move illegal GPA helper out of the MMU code 

Rename kvm_mmu_is_illegal_gpa() to kvm_vcpu_is_illegal_gpa() and move it
to cpuid.h so that's it's colocated with cpuid_maxphyaddr().  The helper
is not MMU specific and will gain a user that is completely unrelated to
the MMU in a future patch.

No functional change intended.

Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Message-Id: <20200924194250.19137-5-sean.j.christopherson@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Sean Christopherson 2020-09-24 12:42:49 -07:00 committed by Paolo Bonzini
parent 1cc6cbc3e4
commit dc46515cf8
4 changed files with 7 additions and 7 deletions
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5
arch/x86/kvm/cpuid.h
View File

@ -34,6 +34,11 @@ static inline int cpuid_maxphyaddr(struct kvm_vcpu *vcpu)
return vcpu->arch.maxphyaddr;
}
static inline bool kvm_vcpu_is_illegal_gpa(struct kvm_vcpu *vcpu, gpa_t gpa)
{
return (gpa >= BIT_ULL(cpuid_maxphyaddr(vcpu)));
}
struct cpuid_reg {
u32 function;
u32 index;

5
arch/x86/kvm/mmu.h
View File

@ -155,11 +155,6 @@ static inline bool is_write_protection(struct kvm_vcpu *vcpu)
return kvm_read_cr0_bits(vcpu, X86_CR0_WP);
}
static inline bool kvm_mmu_is_illegal_gpa(struct kvm_vcpu *vcpu, gpa_t gpa)
{
return (gpa >= BIT_ULL(cpuid_maxphyaddr(vcpu)));
}
/*
* Check if a given access (described through the I/D, W/R and U/S bits of a
* page fault error code pfec) causes a permission fault with the given PTE

2
arch/x86/kvm/mmu/mmu.c
View File

@ -521,7 +521,7 @@ static gpa_t translate_gpa(struct kvm_vcpu *vcpu, gpa_t gpa, u32 access,
struct x86_exception *exception)
{
/* Check if guest physical address doesn't exceed guest maximum */
if (kvm_mmu_is_illegal_gpa(vcpu, gpa)) {
if (kvm_vcpu_is_illegal_gpa(vcpu, gpa)) {
exception->error_code |= PFERR_RSVD_MASK;
return UNMAPPED_GVA;
}

2
arch/x86/kvm/vmx/vmx.c
View File

@ -5314,7 +5314,7 @@ static int handle_ept_violation(struct kvm_vcpu *vcpu)
* would also use advanced VM-exit information for EPT violations to
* reconstruct the page fault error code.
*/
if (unlikely(kvm_mmu_is_illegal_gpa(vcpu, gpa)))
if (unlikely(kvm_vcpu_is_illegal_gpa(vcpu, gpa)))
return kvm_emulate_instruction(vcpu, 0);
return kvm_mmu_page_fault(vcpu, gpa, error_code, NULL, 0);