added ability to partially hook MSRs

[palacios.git] / palacios / src / palacios / svm.c

diff --git a/palacios/src/palacios/svm.c b/palacios/src/palacios/svm.c
index f61fadf..cbb680b 100644 (file)
--- a/palacios/src/palacios/svm.c
+++ b/palacios/src/palacios/svm.c
@@ -314,6 +314,8 @@ static void Init_VMCB_BIOS(vmcb_t * vmcb, struct guest_info * core) {
 
 
     {
+#define INT_PENDING_AMD_MSR            0xc0010055
+
        v3_hook_msr(core->vm_info, IA32_STAR_MSR, NULL, NULL, NULL);
        v3_hook_msr(core->vm_info, IA32_LSTAR_MSR, NULL, NULL, NULL);
        v3_hook_msr(core->vm_info, IA32_FMASK_MSR, NULL, NULL, NULL);
@@ -323,6 +325,9 @@ static void Init_VMCB_BIOS(vmcb_t * vmcb, struct guest_info * core) {
        v3_hook_msr(core->vm_info, SYSENTER_CS_MSR, NULL, NULL, NULL);
        v3_hook_msr(core->vm_info, SYSENTER_ESP_MSR, NULL, NULL, NULL);
        v3_hook_msr(core->vm_info, SYSENTER_EIP_MSR, NULL, NULL, NULL);
+
+       // Passthrough read operations are ok.
+       v3_hook_msr(core->vm_info, INT_PENDING_AMD_MSR, NULL, v3_msr_unhandled_write, NULL);
     }
 }