diff mbox series

[v3,1/8] KVM: x86/mmu: Deduplicate rmap freeing

Message ID 20210506184241.618958-2-bgardon@google.com (mailing list archive)
State New, archived
Headers show
Series Lazily allocate memslot rmaps | expand

Commit Message

Ben Gardon May 6, 2021, 6:42 p.m. UTC 
Small code deduplication. No functional change expected.

Signed-off-by: Ben Gardon <bgardon@google.com>
---
 arch/x86/kvm/x86.c | 19 +++++++++++--------
 1 file changed, 11 insertions(+), 8 deletions(-)

Comments

David Hildenbrand May 7, 2021, 7:42 a.m. UTC | #1 
On 06.05.21 20:42, Ben Gardon wrote:
> Small code deduplication. No functional change expected.
> 
> Signed-off-by: Ben Gardon <bgardon@google.com>
> ---
>   arch/x86/kvm/x86.c | 19 +++++++++++--------
>   1 file changed, 11 insertions(+), 8 deletions(-)
> 
> diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
> index cf3b67679cf0..5bcf07465c47 100644
> --- a/arch/x86/kvm/x86.c
> +++ b/arch/x86/kvm/x86.c
> @@ -10818,17 +10818,23 @@ void kvm_arch_destroy_vm(struct kvm *kvm)
>   	kvm_hv_destroy_vm(kvm);
>   }
>   
> -void kvm_arch_free_memslot(struct kvm *kvm, struct kvm_memory_slot *slot)
> +static void free_memslot_rmap(struct kvm_memory_slot *slot)
>   {
>   	int i;
>   
>   	for (i = 0; i < KVM_NR_PAGE_SIZES; ++i) {
>   		kvfree(slot->arch.rmap[i]);
>   		slot->arch.rmap[i] = NULL;
> +	}
> +}
>   
> -		if (i == 0)
> -			continue;
> +void kvm_arch_free_memslot(struct kvm *kvm, struct kvm_memory_slot *slot)
> +{
> +	int i;
> +
> +	free_memslot_rmap(slot);
>   
> +	for (i = 1; i < KVM_NR_PAGE_SIZES; ++i) {
>   		kvfree(slot->arch.lpage_info[i - 1]);
>   		slot->arch.lpage_info[i - 1] = NULL;
>   	}
> @@ -10894,12 +10900,9 @@ static int kvm_alloc_memslot_metadata(struct kvm_memory_slot *slot,
>   	return 0;
>   
>   out_free:
> -	for (i = 0; i < KVM_NR_PAGE_SIZES; ++i) {
> -		kvfree(slot->arch.rmap[i]);
> -		slot->arch.rmap[i] = NULL;
> -		if (i == 0)
> -			continue;
> +	free_memslot_rmap(slot);
>   
> +	for (i = 1; i < KVM_NR_PAGE_SIZES; ++i) {
>   		kvfree(slot->arch.lpage_info[i - 1]);
>   		slot->arch.lpage_info[i - 1] = NULL;
>   	}
> 

Reviewed-by: David Hildenbrand <david@redhat.com>
diff mbox series

Patch

diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index cf3b67679cf0..5bcf07465c47 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -10818,17 +10818,23 @@  void kvm_arch_destroy_vm(struct kvm *kvm)
 	kvm_hv_destroy_vm(kvm);
 }
 
-void kvm_arch_free_memslot(struct kvm *kvm, struct kvm_memory_slot *slot)
+static void free_memslot_rmap(struct kvm_memory_slot *slot)
 {
 	int i;
 
 	for (i = 0; i < KVM_NR_PAGE_SIZES; ++i) {
 		kvfree(slot->arch.rmap[i]);
 		slot->arch.rmap[i] = NULL;
+	}
+}
 
-		if (i == 0)
-			continue;
+void kvm_arch_free_memslot(struct kvm *kvm, struct kvm_memory_slot *slot)
+{
+	int i;
+
+	free_memslot_rmap(slot);
 
+	for (i = 1; i < KVM_NR_PAGE_SIZES; ++i) {
 		kvfree(slot->arch.lpage_info[i - 1]);
 		slot->arch.lpage_info[i - 1] = NULL;
 	}
@@ -10894,12 +10900,9 @@  static int kvm_alloc_memslot_metadata(struct kvm_memory_slot *slot,
 	return 0;
 
 out_free:
-	for (i = 0; i < KVM_NR_PAGE_SIZES; ++i) {
-		kvfree(slot->arch.rmap[i]);
-		slot->arch.rmap[i] = NULL;
-		if (i == 0)
-			continue;
+	free_memslot_rmap(slot);
 
+	for (i = 1; i < KVM_NR_PAGE_SIZES; ++i) {
 		kvfree(slot->arch.lpage_info[i - 1]);
 		slot->arch.lpage_info[i - 1] = NULL;
 	}