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Diffstat (limited to 'arch/x86/kvm/mmu_audit.c')
-rw-r--r--arch/x86/kvm/mmu_audit.c28
1 files changed, 12 insertions, 16 deletions
diff --git a/arch/x86/kvm/mmu_audit.c b/arch/x86/kvm/mmu_audit.c
index fe15dcc07a6..1185fe7a7f4 100644
--- a/arch/x86/kvm/mmu_audit.c
+++ b/arch/x86/kvm/mmu_audit.c
@@ -116,10 +116,8 @@ static void audit_mappings(struct kvm_vcpu *vcpu, u64 *sptep, int level)
gfn = kvm_mmu_page_get_gfn(sp, sptep - sp->spt);
pfn = gfn_to_pfn_atomic(vcpu->kvm, gfn);
- if (is_error_pfn(pfn)) {
- kvm_release_pfn_clean(pfn);
+ if (is_error_pfn(pfn))
return;
- }
hpa = pfn << PAGE_SHIFT;
if ((*sptep & PT64_BASE_ADDR_MASK) != hpa)
@@ -190,23 +188,21 @@ static void check_mappings_rmap(struct kvm *kvm, struct kvm_mmu_page *sp)
static void audit_write_protection(struct kvm *kvm, struct kvm_mmu_page *sp)
{
- struct kvm_memory_slot *slot;
unsigned long *rmapp;
- u64 *spte;
+ u64 *sptep;
+ struct rmap_iterator iter;
if (sp->role.direct || sp->unsync || sp->role.invalid)
return;
- slot = gfn_to_memslot(kvm, sp->gfn);
- rmapp = &slot->rmap[sp->gfn - slot->base_gfn];
+ rmapp = gfn_to_rmap(kvm, sp->gfn, PT_PAGE_TABLE_LEVEL);
- spte = rmap_next(kvm, rmapp, NULL);
- while (spte) {
- if (is_writable_pte(*spte))
+ for (sptep = rmap_get_first(*rmapp, &iter); sptep;
+ sptep = rmap_get_next(&iter)) {
+ if (is_writable_pte(*sptep))
audit_printk(kvm, "shadow page has writable "
"mappings: gfn %llx role %x\n",
sp->gfn, sp->role.word);
- spte = rmap_next(kvm, rmapp, spte);
}
}
@@ -234,7 +230,7 @@ static void audit_vcpu_spte(struct kvm_vcpu *vcpu)
}
static bool mmu_audit;
-static struct jump_label_key mmu_audit_key;
+static struct static_key mmu_audit_key;
static void __kvm_mmu_audit(struct kvm_vcpu *vcpu, int point)
{
@@ -250,7 +246,7 @@ static void __kvm_mmu_audit(struct kvm_vcpu *vcpu, int point)
static inline void kvm_mmu_audit(struct kvm_vcpu *vcpu, int point)
{
- if (static_branch((&mmu_audit_key)))
+ if (static_key_false((&mmu_audit_key)))
__kvm_mmu_audit(vcpu, point);
}
@@ -259,7 +255,7 @@ static void mmu_audit_enable(void)
if (mmu_audit)
return;
- jump_label_inc(&mmu_audit_key);
+ static_key_slow_inc(&mmu_audit_key);
mmu_audit = true;
}
@@ -268,7 +264,7 @@ static void mmu_audit_disable(void)
if (!mmu_audit)
return;
- jump_label_dec(&mmu_audit_key);
+ static_key_slow_dec(&mmu_audit_key);
mmu_audit = false;
}
@@ -300,4 +296,4 @@ static struct kernel_param_ops audit_param_ops = {
.get = param_get_bool,
};
-module_param_cb(mmu_audit, &audit_param_ops, &mmu_audit, 0644);
+arch_param_cb(mmu_audit, &audit_param_ops, &mmu_audit, 0644);