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-rw-r--r--virt/kvm/pfncache.c16
1 files changed, 9 insertions, 7 deletions
diff --git a/virt/kvm/pfncache.c b/virt/kvm/pfncache.c
index 8f2121b5f2a0..91b0e329006b 100644
--- a/virt/kvm/pfncache.c
+++ b/virt/kvm/pfncache.c
@@ -245,8 +245,7 @@ out_error:
return -EFAULT;
}
-static int __kvm_gpc_refresh(struct gfn_to_pfn_cache *gpc, gpa_t gpa, unsigned long uhva,
- unsigned long len)
+static int __kvm_gpc_refresh(struct gfn_to_pfn_cache *gpc, gpa_t gpa, unsigned long uhva)
{
unsigned long page_offset;
bool unmap_old = false;
@@ -260,9 +259,6 @@ static int __kvm_gpc_refresh(struct gfn_to_pfn_cache *gpc, gpa_t gpa, unsigned l
if (WARN_ON_ONCE(kvm_is_error_gpa(gpa) == kvm_is_error_hva(uhva)))
return -EINVAL;
- if (!kvm_gpc_is_valid_len(gpa, uhva, len))
- return -EINVAL;
-
lockdep_assert_held(&gpc->refresh_lock);
write_lock_irq(&gpc->lock);
@@ -365,6 +361,9 @@ int kvm_gpc_refresh(struct gfn_to_pfn_cache *gpc, unsigned long len)
guard(mutex)(&gpc->refresh_lock);
+ if (!kvm_gpc_is_valid_len(gpc->gpa, gpc->uhva, len))
+ return -EINVAL;
+
/*
* If the GPA is valid then ignore the HVA, as a cache can be GPA-based
* or HVA-based, not both. For GPA-based caches, the HVA will be
@@ -372,7 +371,7 @@ int kvm_gpc_refresh(struct gfn_to_pfn_cache *gpc, unsigned long len)
*/
uhva = kvm_is_error_gpa(gpc->gpa) ? gpc->uhva : KVM_HVA_ERR_BAD;
- return __kvm_gpc_refresh(gpc, gpc->gpa, uhva, len);
+ return __kvm_gpc_refresh(gpc, gpc->gpa, uhva);
}
void kvm_gpc_init(struct gfn_to_pfn_cache *gpc, struct kvm *kvm)
@@ -392,6 +391,9 @@ static int __kvm_gpc_activate(struct gfn_to_pfn_cache *gpc, gpa_t gpa, unsigned
{
struct kvm *kvm = gpc->kvm;
+ if (!kvm_gpc_is_valid_len(gpa, uhva, len))
+ return -EINVAL;
+
guard(mutex)(&gpc->refresh_lock);
if (!gpc->active) {
@@ -411,7 +413,7 @@ static int __kvm_gpc_activate(struct gfn_to_pfn_cache *gpc, gpa_t gpa, unsigned
gpc->active = true;
write_unlock_irq(&gpc->lock);
}
- return __kvm_gpc_refresh(gpc, gpa, uhva, len);
+ return __kvm_gpc_refresh(gpc, gpa, uhva);
}
int kvm_gpc_activate(struct gfn_to_pfn_cache *gpc, gpa_t gpa, unsigned long len)