aboutsummaryrefslogtreecommitdiff
diff options
context:
space:
mode:
-rw-r--r--arch/x86/include/asm/kvm_host.h1
-rw-r--r--arch/x86/kvm/x86.c29
2 files changed, 14 insertions, 16 deletions
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
index 6b15f27f49d0..22505e74c3da 100644
--- a/arch/x86/include/asm/kvm_host.h
+++ b/arch/x86/include/asm/kvm_host.h
@@ -1418,6 +1418,7 @@ struct kvm_arch_async_pf {
bool direct_map;
};
+extern u32 __read_mostly kvm_nr_uret_msrs;
extern u64 __read_mostly host_efer;
extern bool __read_mostly allow_smaller_maxphyaddr;
extern struct kvm_x86_ops kvm_x86_ops;
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index d514031ed25f..5e1deed8ea5d 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -184,11 +184,6 @@ module_param(pi_inject_timer, bint, S_IRUGO | S_IWUSR);
*/
#define KVM_MAX_NR_USER_RETURN_MSRS 16
-struct kvm_user_return_msrs_global {
- int nr;
- u32 msrs[KVM_MAX_NR_USER_RETURN_MSRS];
-};
-
struct kvm_user_return_msrs {
struct user_return_notifier urn;
bool registered;
@@ -198,7 +193,9 @@ struct kvm_user_return_msrs {
} values[KVM_MAX_NR_USER_RETURN_MSRS];
};
-static struct kvm_user_return_msrs_global __read_mostly user_return_msrs_global;
+u32 __read_mostly kvm_nr_uret_msrs;
+EXPORT_SYMBOL_GPL(kvm_nr_uret_msrs);
+static u32 __read_mostly kvm_uret_msrs_list[KVM_MAX_NR_USER_RETURN_MSRS];
static struct kvm_user_return_msrs __percpu *user_return_msrs;
#define KVM_SUPPORTED_XCR0 (XFEATURE_MASK_FP | XFEATURE_MASK_SSE \
@@ -330,10 +327,10 @@ static void kvm_on_user_return(struct user_return_notifier *urn)
user_return_notifier_unregister(urn);
}
local_irq_restore(flags);
- for (slot = 0; slot < user_return_msrs_global.nr; ++slot) {
+ for (slot = 0; slot < kvm_nr_uret_msrs; ++slot) {
values = &msrs->values[slot];
if (values->host != values->curr) {
- wrmsrl(user_return_msrs_global.msrs[slot], values->host);
+ wrmsrl(kvm_uret_msrs_list[slot], values->host);
values->curr = values->host;
}
}
@@ -358,9 +355,9 @@ EXPORT_SYMBOL_GPL(kvm_probe_user_return_msr);
void kvm_define_user_return_msr(unsigned slot, u32 msr)
{
BUG_ON(slot >= KVM_MAX_NR_USER_RETURN_MSRS);
- user_return_msrs_global.msrs[slot] = msr;
- if (slot >= user_return_msrs_global.nr)
- user_return_msrs_global.nr = slot + 1;
+ kvm_uret_msrs_list[slot] = msr;
+ if (slot >= kvm_nr_uret_msrs)
+ kvm_nr_uret_msrs = slot + 1;
}
EXPORT_SYMBOL_GPL(kvm_define_user_return_msr);
@@ -368,8 +365,8 @@ int kvm_find_user_return_msr(u32 msr)
{
int i;
- for (i = 0; i < user_return_msrs_global.nr; ++i) {
- if (user_return_msrs_global.msrs[i] == msr)
+ for (i = 0; i < kvm_nr_uret_msrs; ++i) {
+ if (kvm_uret_msrs_list[i] == msr)
return i;
}
return -1;
@@ -383,8 +380,8 @@ static void kvm_user_return_msr_cpu_online(void)
u64 value;
int i;
- for (i = 0; i < user_return_msrs_global.nr; ++i) {
- rdmsrl_safe(user_return_msrs_global.msrs[i], &value);
+ for (i = 0; i < kvm_nr_uret_msrs; ++i) {
+ rdmsrl_safe(kvm_uret_msrs_list[i], &value);
msrs->values[i].host = value;
msrs->values[i].curr = value;
}
@@ -399,7 +396,7 @@ int kvm_set_user_return_msr(unsigned slot, u64 value, u64 mask)
value = (value & mask) | (msrs->values[slot].host & ~mask);
if (value == msrs->values[slot].curr)
return 0;
- err = wrmsrl_safe(user_return_msrs_global.msrs[slot], value);
+ err = wrmsrl_safe(kvm_uret_msrs_list[slot], value);
if (err)
return 1;