KVM: SVM: Add intercept check for accessing dr registers
This patch adds the intercept checks for instruction
accessing the debug registers.
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
index ff4ed36..381b038 100644
--- a/arch/x86/kvm/svm.c
+++ b/arch/x86/kvm/svm.c
@@ -3882,6 +3882,8 @@
[x86_intercept_clts] = POST_EX(SVM_EXIT_WRITE_CR0),
[x86_intercept_lmsw] = POST_EX(SVM_EXIT_WRITE_CR0),
[x86_intercept_smsw] = POST_EX(SVM_EXIT_READ_CR0),
+ [x86_intercept_dr_read] = POST_EX(SVM_EXIT_READ_DR0),
+ [x86_intercept_dr_write] = POST_EX(SVM_EXIT_WRITE_DR0),
};
#undef POST_EX
@@ -3939,6 +3941,10 @@
break;
}
+ case SVM_EXIT_READ_DR0:
+ case SVM_EXIT_WRITE_DR0:
+ icpt_info.exit_code += info->modrm_reg;
+ break;
default:
break;
}
