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KVM: VMX: constify lookup tables 

We use vmcs_field_to_offset_table[], kvm_vmx_segment_fields[] and
kvm_vmx_exit_handlers[] as lookup tables only -- make them r/o.

Signed-off-by: Mathias Krause <minipli@googlemail.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Mathias Krause 2012-08-30 01:30:19 +02:00 committed by Avi Kivity
parent f1d248315a
commit 772e031899
1 changed files with 7 additions and 7 deletions
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14
arch/x86/kvm/vmx.c
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@ -450,7 +450,7 @@ static inline struct vcpu_vmx *to_vmx(struct kvm_vcpu *vcpu)
#define FIELD64(number, name) [number] = VMCS12_OFFSET(name), \
[number##_HIGH] = VMCS12_OFFSET(name)+4
static unsigned short vmcs_field_to_offset_table[] = {
static const unsigned short vmcs_field_to_offset_table[] = {
FIELD(VIRTUAL_PROCESSOR_ID, virtual_processor_id),
FIELD(GUEST_ES_SELECTOR, guest_es_selector),
FIELD(GUEST_CS_SELECTOR, guest_cs_selector),
@ -666,7 +666,7 @@ static struct vmx_capability {
.ar_bytes = GUEST_##seg##_AR_BYTES, \
}
static struct kvm_vmx_segment_field {
static const struct kvm_vmx_segment_field {
unsigned selector;
unsigned base;
unsigned limit;
@ -2695,7 +2695,7 @@ static __exit void hardware_unsetup(void)
static void fix_pmode_dataseg(struct kvm_vcpu *vcpu, int seg, struct kvm_segment *save)
{
struct kvm_vmx_segment_field *sf = &kvm_vmx_segment_fields[seg];
const struct kvm_vmx_segment_field *sf = &kvm_vmx_segment_fields[seg];
struct kvm_segment tmp = *save;
if (!(vmcs_readl(sf->base) == tmp.base && tmp.s)) {
@ -2764,7 +2764,7 @@ static gva_t rmode_tss_base(struct kvm *kvm)
static void fix_rmode_seg(int seg, struct kvm_segment *save)
{
struct kvm_vmx_segment_field *sf = &kvm_vmx_segment_fields[seg];
const struct kvm_vmx_segment_field *sf = &kvm_vmx_segment_fields[seg];
vmcs_write16(sf->selector, save->base >> 4);
vmcs_write32(sf->base, save->base & 0xffff0);
@ -3202,7 +3202,7 @@ static void vmx_set_segment(struct kvm_vcpu *vcpu,
struct kvm_segment *var, int seg)
{
struct vcpu_vmx *vmx = to_vmx(vcpu);
struct kvm_vmx_segment_field *sf = &kvm_vmx_segment_fields[seg];
const struct kvm_vmx_segment_field *sf = &kvm_vmx_segment_fields[seg];
u32 ar;
vmx_segment_cache_clear(vmx);
@ -3572,7 +3572,7 @@ out:
static void seg_setup(int seg)
{
struct kvm_vmx_segment_field *sf = &kvm_vmx_segment_fields[seg];
const struct kvm_vmx_segment_field *sf = &kvm_vmx_segment_fields[seg];
unsigned int ar;
vmcs_write16(sf->selector, 0);
@ -5655,7 +5655,7 @@ static int handle_vmptrst(struct kvm_vcpu *vcpu)
* may resume. Otherwise they set the kvm_run parameter to indicate what needs
* to be done to userspace and return 0.
*/
static int (*kvm_vmx_exit_handlers[])(struct kvm_vcpu *vcpu) = {
static int (*const kvm_vmx_exit_handlers[])(struct kvm_vcpu *vcpu) = {
[EXIT_REASON_EXCEPTION_NMI] = handle_exception,
[EXIT_REASON_EXTERNAL_INTERRUPT] = handle_external_interrupt,
[EXIT_REASON_TRIPLE_FAULT] = handle_triple_fault,