From: Sean Christopherson <sean.j.christopherson@intel.com>
Date: Thu, 24 Sep 2020 19:42:49 +0000 (-0700)
Subject: KVM: x86: Move illegal GPA helper out of the MMU code
X-Git-Tag: v5.10.7~1315^2~119
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=dc46515cf838e37c602016cc905df051e06cb8ea;p=platform%2Fkernel%2Flinux-rpi.git

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>
---

diff --git a/arch/x86/kvm/cpuid.h b/arch/x86/kvm/cpuid.h
index 3a923ae..1d2c4f2 100644
--- a/arch/x86/kvm/cpuid.h
+++ b/arch/x86/kvm/cpuid.h
@@ -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;
diff --git a/arch/x86/kvm/mmu.h b/arch/x86/kvm/mmu.h
index 5efc608..9c4a9c8 100644
--- a/arch/x86/kvm/mmu.h
+++ b/arch/x86/kvm/mmu.h
@@ -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
diff --git a/arch/x86/kvm/mmu/mmu.c b/arch/x86/kvm/mmu/mmu.c
index 5ae9f97..c82e365 100644
--- a/arch/x86/kvm/mmu/mmu.c
+++ b/arch/x86/kvm/mmu/mmu.c
@@ -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;
 	}
diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c
index 2b5e749..4e372b4 100644
--- a/arch/x86/kvm/vmx/vmx.c
+++ b/arch/x86/kvm/vmx/vmx.c
@@ -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);