KVM: SVM: Change intercept_dr to generic intercepts

Modify intercept_dr to generic intercepts in vmcb_control_area. Use
the generic vmcb_set_intercept, vmcb_clr_intercept and vmcb_is_intercept
to set/clear/test the intercept_dr bits.

Signed-off-by: Babu Moger <babu.moger@amd.com>
Reviewed-by: Jim Mattson <jmattson@google.com>
Message-Id: <159985249255.11252.10000868032136333355.stgit@bmoger-ubuntu>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

3 files changed, 20 insertions, 24 deletions

diff --git a/arch/x86/kvm/svm/nested.c b/arch/x86/kvm/svm/nested.c
index 4a7fcc6d312c..012ab2255b3c 100644
--- a/arch/x86/kvm/svm/nested.c
+++ b/arch/x86/kvm/svm/nested.c
@@ -112,7 +112,6 @@ void recalc_intercepts(struct vcpu_svm *svm)
 	for (i = 0; i < MAX_INTERCEPT; i++)
 		c->intercepts[i] = h->intercepts[i];
 
-	c->intercept_dr = h->intercept_dr;
 	c->intercept_exceptions = h->intercept_exceptions;
 	c->intercept = h->intercept;
 
@@ -135,7 +134,6 @@ void recalc_intercepts(struct vcpu_svm *svm)
 	for (i = 0; i < MAX_INTERCEPT; i++)
 		c->intercepts[i] |= g->intercepts[i];
 
-	c->intercept_dr |= g->intercept_dr;
 	c->intercept_exceptions |= g->intercept_exceptions;
 	c->intercept |= g->intercept;
 }
@@ -148,7 +146,6 @@ static void copy_vmcb_control_area(struct vmcb_control_area *dst,
 	for (i = 0; i < MAX_INTERCEPT; i++)
 		dst->intercepts[i] = from->intercepts[i];
 
-	dst->intercept_dr         = from->intercept_dr;
 	dst->intercept_exceptions = from->intercept_exceptions;
 	dst->intercept            = from->intercept;
 	dst->iopm_base_pa         = from->iopm_base_pa;
@@ -777,8 +774,7 @@ static int nested_svm_intercept(struct vcpu_svm *svm)
 		break;
 	}
 	case SVM_EXIT_READ_DR0 ... SVM_EXIT_WRITE_DR7: {
-		u32 bit = 1U << (exit_code - SVM_EXIT_READ_DR0);
-		if (svm->nested.ctl.intercept_dr & bit)
+		if (vmcb_is_intercept(&svm->nested.ctl, exit_code))
 			vmexit = NESTED_EXIT_DONE;
 		break;
 	}
diff --git a/arch/x86/kvm/svm/svm.c b/arch/x86/kvm/svm/svm.c
index 98ba4fa07f29..07a0804d4fe7 100644
--- a/arch/x86/kvm/svm/svm.c
+++ b/arch/x86/kvm/svm/svm.c
@@ -2814,8 +2814,8 @@ static void dump_vmcb(struct kvm_vcpu *vcpu)
 	pr_err("VMCB Control Area:\n");
 	pr_err("%-20s%04x\n", "cr_read:", control->intercepts[INTERCEPT_CR] & 0xffff);
 	pr_err("%-20s%04x\n", "cr_write:", control->intercepts[INTERCEPT_CR] >> 16);
-	pr_err("%-20s%04x\n", "dr_read:", control->intercept_dr & 0xffff);
-	pr_err("%-20s%04x\n", "dr_write:", control->intercept_dr >> 16);
+	pr_err("%-20s%04x\n", "dr_read:", control->intercepts[INTERCEPT_DR] & 0xffff);
+	pr_err("%-20s%04x\n", "dr_write:", control->intercepts[INTERCEPT_DR] >> 16);
 	pr_err("%-20s%08x\n", "exceptions:", control->intercept_exceptions);
 	pr_err("%-20s%016llx\n", "intercepts:", control->intercept);
 	pr_err("%-20s%d\n", "pause filter count:", control->pause_filter_count);
diff --git a/arch/x86/kvm/svm/svm.h b/arch/x86/kvm/svm/svm.h
index 92938596bd3e..2f54829c9ad6 100644
--- a/arch/x86/kvm/svm/svm.h
+++ b/arch/x86/kvm/svm/svm.h
@@ -260,22 +260,22 @@ static inline void set_dr_intercepts(struct vcpu_svm *svm)
 {
 	struct vmcb *vmcb = get_host_vmcb(svm);
 
-	vmcb->control.intercept_dr = (1 << INTERCEPT_DR0_READ)
-		| (1 << INTERCEPT_DR1_READ)
-		| (1 << INTERCEPT_DR2_READ)
-		| (1 << INTERCEPT_DR3_READ)
-		| (1 << INTERCEPT_DR4_READ)
-		| (1 << INTERCEPT_DR5_READ)
-		| (1 << INTERCEPT_DR6_READ)
-		| (1 << INTERCEPT_DR7_READ)
-		| (1 << INTERCEPT_DR0_WRITE)
-		| (1 << INTERCEPT_DR1_WRITE)
-		| (1 << INTERCEPT_DR2_WRITE)
-		| (1 << INTERCEPT_DR3_WRITE)
-		| (1 << INTERCEPT_DR4_WRITE)
-		| (1 << INTERCEPT_DR5_WRITE)
-		| (1 << INTERCEPT_DR6_WRITE)
-		| (1 << INTERCEPT_DR7_WRITE);
+	vmcb_set_intercept(&vmcb->control, INTERCEPT_DR0_READ);
+	vmcb_set_intercept(&vmcb->control, INTERCEPT_DR1_READ);
+	vmcb_set_intercept(&vmcb->control, INTERCEPT_DR2_READ);
+	vmcb_set_intercept(&vmcb->control, INTERCEPT_DR3_READ);
+	vmcb_set_intercept(&vmcb->control, INTERCEPT_DR4_READ);
+	vmcb_set_intercept(&vmcb->control, INTERCEPT_DR5_READ);
+	vmcb_set_intercept(&vmcb->control, INTERCEPT_DR6_READ);
+	vmcb_set_intercept(&vmcb->control, INTERCEPT_DR7_READ);
+	vmcb_set_intercept(&vmcb->control, INTERCEPT_DR0_WRITE);
+	vmcb_set_intercept(&vmcb->control, INTERCEPT_DR1_WRITE);
+	vmcb_set_intercept(&vmcb->control, INTERCEPT_DR2_WRITE);
+	vmcb_set_intercept(&vmcb->control, INTERCEPT_DR3_WRITE);
+	vmcb_set_intercept(&vmcb->control, INTERCEPT_DR4_WRITE);
+	vmcb_set_intercept(&vmcb->control, INTERCEPT_DR5_WRITE);
+	vmcb_set_intercept(&vmcb->control, INTERCEPT_DR6_WRITE);
+	vmcb_set_intercept(&vmcb->control, INTERCEPT_DR7_WRITE);
 
 	recalc_intercepts(svm);
 }
@@ -284,7 +284,7 @@ static inline void clr_dr_intercepts(struct vcpu_svm *svm)
 {
 	struct vmcb *vmcb = get_host_vmcb(svm);
 
-	vmcb->control.intercept_dr = 0;
+	vmcb->control.intercepts[INTERCEPT_DR] = 0;
 
 	recalc_intercepts(svm);
 }