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kvm: vmx: Change vmcs_field_type to vmcs_field_width

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Per the SDM, "[VMCS] Fields are grouped by width (16-bit, 32-bit,
etc.) and type (guest-state, host-state, etc.)." Previously, the width
was indicated by vmcs_field_type. To avoid confusion when we start
dealing with both field width and field type, change vmcs_field_type
to vmcs_field_width.

Signed-off-by: Jim Mattson <jmattson@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
This commit is contained in:
Jim Mattson 2017-12-22 12:12:16 -08:00 committed by Radim Krčmář
parent 5b15706dbf
commit d37f4267a7
1 changed files with 19 additions and 19 deletions
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38
arch/x86/kvm/vmx.c
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@ -3894,17 +3894,17 @@ static void free_kvm_area(void)
}
}
enum vmcs_field_type {
VMCS_FIELD_TYPE_U16 = 0,
VMCS_FIELD_TYPE_U64 = 1,
VMCS_FIELD_TYPE_U32 = 2,
VMCS_FIELD_TYPE_NATURAL_WIDTH = 3
enum vmcs_field_width {
VMCS_FIELD_WIDTH_U16 = 0,
VMCS_FIELD_WIDTH_U64 = 1,
VMCS_FIELD_WIDTH_U32 = 2,
VMCS_FIELD_WIDTH_NATURAL_WIDTH = 3
};
static inline int vmcs_field_type(unsigned long field)
static inline int vmcs_field_width(unsigned long field)
{
if (0x1 & field) /* the *_HIGH fields are all 32 bit */
return VMCS_FIELD_TYPE_U32;
return VMCS_FIELD_WIDTH_U32;
return (field >> 13) & 0x3 ;
}
@ -3919,7 +3919,7 @@ static void init_vmcs_shadow_fields(void)
for (i = j = 0; i < max_shadow_read_only_fields; i++) {
u16 field = shadow_read_only_fields[i];
if (vmcs_field_type(field) == VMCS_FIELD_TYPE_U64 &&
if (vmcs_field_width(field) == VMCS_FIELD_WIDTH_U64 &&
(i + 1 == max_shadow_read_only_fields ||
shadow_read_only_fields[i + 1] != field + 1))
pr_err("Missing field from shadow_read_only_field %x\n",
@ -3938,7 +3938,7 @@ static void init_vmcs_shadow_fields(void)
for (i = j = 0; i < max_shadow_read_write_fields; i++) {
u16 field = shadow_read_write_fields[i];
if (vmcs_field_type(field) == VMCS_FIELD_TYPE_U64 &&
if (vmcs_field_width(field) == VMCS_FIELD_WIDTH_U64 &&
(i + 1 == max_shadow_read_write_fields ||
shadow_read_write_fields[i + 1] != field + 1))
pr_err("Missing field from shadow_read_write_field %x\n",
@ -7511,17 +7511,17 @@ static inline int vmcs12_read_any(struct kvm_vcpu *vcpu,
p = ((char *)(get_vmcs12(vcpu))) + offset;
switch (vmcs_field_type(field)) {
case VMCS_FIELD_TYPE_NATURAL_WIDTH:
switch (vmcs_field_width(field)) {
case VMCS_FIELD_WIDTH_NATURAL_WIDTH:
*ret = *((natural_width *)p);
return 0;
case VMCS_FIELD_TYPE_U16:
case VMCS_FIELD_WIDTH_U16:
*ret = *((u16 *)p);
return 0;
case VMCS_FIELD_TYPE_U32:
case VMCS_FIELD_WIDTH_U32:
*ret = *((u32 *)p);
return 0;
case VMCS_FIELD_TYPE_U64:
case VMCS_FIELD_WIDTH_U64:
*ret = *((u64 *)p);
return 0;
default:
@ -7538,17 +7538,17 @@ static inline int vmcs12_write_any(struct kvm_vcpu *vcpu,
if (offset < 0)
return offset;
switch (vmcs_field_type(field)) {
case VMCS_FIELD_TYPE_U16:
switch (vmcs_field_width(field)) {
case VMCS_FIELD_WIDTH_U16:
*(u16 *)p = field_value;
return 0;
case VMCS_FIELD_TYPE_U32:
case VMCS_FIELD_WIDTH_U32:
*(u32 *)p = field_value;
return 0;
case VMCS_FIELD_TYPE_U64:
case VMCS_FIELD_WIDTH_U64:
*(u64 *)p = field_value;
return 0;
case VMCS_FIELD_TYPE_NATURAL_WIDTH:
case VMCS_FIELD_WIDTH_NATURAL_WIDTH:
*(natural_width *)p = field_value;
return 0;
default: