From 772e031899fdf3c7636d66aae9b0b57d1aaebb93 Mon Sep 17 00:00:00 2001
From: Mathias Krause <minipli@googlemail.com>
Date: Thu, 30 Aug 2012 01:30:19 +0200
Subject: [PATCH] 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>
---
arch/x86/kvm/vmx.c | 14 +++++++-------
1 file changed, 7 insertions(+), 7 deletions(-)
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index 248c2b490e9be..d62b4139a2929 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -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,
--
2.30.2