[PATCH 09/15] KVM: SVM: Allocate sd->save_area with __GFP_ZERO

Lai Jiangshan
2021-11-18T11:12:17Z

And remove clear_page() on it.

Signed-off-by: Lai Jiangshan <laijs@linux.alibaba.com>
---
arch/x86/kvm/svm/svm.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/arch/x86/kvm/svm/svm.c b/arch/x86/kvm/svm/svm.c
index 33b434fd5d9b..d855ba664fc2 100644
--- a/arch/x86/kvm/svm/svm.c
+++ b/arch/x86/kvm/svm/svm.c
@@ -585,12 +585,10 @@ static int svm_cpu_init(int cpu)
if (!sd)
return ret;
sd->cpu = cpu;
- sd->save_area = alloc_page(GFP_KERNEL);
+ sd->save_area = alloc_page(GFP_KERNEL | __GFP_ZERO);
if (!sd->save_area)
goto free_cpu_data;

- clear_page(page_address(sd->save_area));
-
ret = sev_cpu_init(sd);
if (ret)
goto free_save_area;
--
2.19.1.6.gb485710b