KVM: x86: Make register state after reset conform to specification
VMX behaves now as SVM wrt to FPU initialization. Code has been moved to
generic code path. General-purpose registers are now cleared on reset and
INIT. SVM code properly initializes EDX.
Signed-off-by: Julian Stecklina <jsteckli@os.inf.tu-dresden.de>
Signed-off-by: Gleb Natapov <gleb@redhat.com>
diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
index dcb79527..d29d3cd 100644
--- a/arch/x86/kvm/svm.c
+++ b/arch/x86/kvm/svm.c
@@ -20,6 +20,7 @@
#include "mmu.h"
#include "kvm_cache_regs.h"
#include "x86.h"
+#include "cpuid.h"
#include <linux/module.h>
#include <linux/mod_devicetable.h>
@@ -1193,6 +1194,8 @@
static int svm_vcpu_reset(struct kvm_vcpu *vcpu)
{
struct vcpu_svm *svm = to_svm(vcpu);
+ u32 dummy;
+ u32 eax = 1;
init_vmcb(svm);
@@ -1201,8 +1204,9 @@
svm->vmcb->save.cs.base = svm->vcpu.arch.sipi_vector << 12;
svm->vmcb->save.cs.selector = svm->vcpu.arch.sipi_vector << 8;
}
- vcpu->arch.regs_avail = ~0;
- vcpu->arch.regs_dirty = ~0;
+
+ kvm_cpuid(vcpu, &eax, &dummy, &dummy, &dummy);
+ kvm_register_write(vcpu, VCPU_REGS_RDX, eax);
return 0;
}
@@ -1259,10 +1263,6 @@
svm->asid_generation = 0;
init_vmcb(svm);
- err = fx_init(&svm->vcpu);
- if (err)
- goto free_page4;
-
svm->vcpu.arch.apic_base = 0xfee00000 | MSR_IA32_APICBASE_ENABLE;
if (kvm_vcpu_is_bsp(&svm->vcpu))
svm->vcpu.arch.apic_base |= MSR_IA32_APICBASE_BSP;
@@ -1271,8 +1271,6 @@
return &svm->vcpu;
-free_page4:
- __free_page(hsave_page);
free_page3:
__free_pages(nested_msrpm_pages, MSRPM_ALLOC_ORDER);
free_page2: