mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-24 21:24:00 +08:00
KVM: nVMX: Copy VMCS12 to processor-specific shadow vmcs
Introduce a function used to copy fields from the software controlled VMCS12 to the processor-specific shadow vmcs Signed-off-by: Abel Gordon <abelg@il.ibm.com> Reviewed-by: Orit Wasserman <owasserm@redhat.com> Signed-off-by: Gleb Natapov <gleb@redhat.com>
This commit is contained in:
parent
16f5b9034b
commit
c3114420d1
@ -718,6 +718,7 @@ static void vmx_get_segment(struct kvm_vcpu *vcpu,
|
||||
static bool guest_state_valid(struct kvm_vcpu *vcpu);
|
||||
static u32 vmx_segment_access_rights(struct kvm_segment *var);
|
||||
static void vmx_sync_pir_to_irr_dummy(struct kvm_vcpu *vcpu);
|
||||
static void copy_vmcs12_to_shadow(struct vcpu_vmx *vmx);
|
||||
static void copy_shadow_to_vmcs12(struct vcpu_vmx *vmx);
|
||||
|
||||
static DEFINE_PER_CPU(struct vmcs *, vmxarea);
|
||||
@ -5930,6 +5931,50 @@ static void copy_shadow_to_vmcs12(struct vcpu_vmx *vmx)
|
||||
vmcs_load(vmx->loaded_vmcs->vmcs);
|
||||
}
|
||||
|
||||
static void copy_vmcs12_to_shadow(struct vcpu_vmx *vmx)
|
||||
{
|
||||
unsigned long *fields[] = {
|
||||
(unsigned long *)shadow_read_write_fields,
|
||||
(unsigned long *)shadow_read_only_fields
|
||||
};
|
||||
int num_lists = ARRAY_SIZE(fields);
|
||||
int max_fields[] = {
|
||||
max_shadow_read_write_fields,
|
||||
max_shadow_read_only_fields
|
||||
};
|
||||
int i, q;
|
||||
unsigned long field;
|
||||
u64 field_value = 0;
|
||||
struct vmcs *shadow_vmcs = vmx->nested.current_shadow_vmcs;
|
||||
|
||||
vmcs_load(shadow_vmcs);
|
||||
|
||||
for (q = 0; q < num_lists; q++) {
|
||||
for (i = 0; i < max_fields[q]; i++) {
|
||||
field = fields[q][i];
|
||||
vmcs12_read_any(&vmx->vcpu, field, &field_value);
|
||||
|
||||
switch (vmcs_field_type(field)) {
|
||||
case VMCS_FIELD_TYPE_U16:
|
||||
vmcs_write16(field, (u16)field_value);
|
||||
break;
|
||||
case VMCS_FIELD_TYPE_U32:
|
||||
vmcs_write32(field, (u32)field_value);
|
||||
break;
|
||||
case VMCS_FIELD_TYPE_U64:
|
||||
vmcs_write64(field, (u64)field_value);
|
||||
break;
|
||||
case VMCS_FIELD_TYPE_NATURAL_WIDTH:
|
||||
vmcs_writel(field, (long)field_value);
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
vmcs_clear(shadow_vmcs);
|
||||
vmcs_load(vmx->loaded_vmcs->vmcs);
|
||||
}
|
||||
|
||||
/*
|
||||
* VMX instructions which assume a current vmcs12 (i.e., that VMPTRLD was
|
||||
* used before) all generate the same failure when it is missing.
|
||||
|
Loading…
Reference in New Issue
Block a user