[PATCH linux-next v2] KVM: SVM: Remove the unneeded result variable

From: cgel . zte
Date: Sun Aug 21 2022 - 21:37:32 EST


From: ye xingchen <ye.xingchen@xxxxxxxxxx>

Return the value from sev_guest_activate(&activate, error) and
sev_issue_cmd_external_user(f.file, id, data, error) directly
instead of storing it in another redundant variable.And also change
the position of handle and asid to simplify the code.

Signed-off-by: ye xingchen <ye.xingchen@xxxxxxxxxx>
---
v1 -> v2
Suggested-by: SeanChristopherson <seanjc@xxxxxxxxxx>

Change the position of handle and asid.
Change the explain about this patch.
Dropping the comment about asid + handle.
arch/x86/kvm/svm/sev.c | 19 ++++++-------------
1 file changed, 6 insertions(+), 13 deletions(-)

diff --git a/arch/x86/kvm/svm/sev.c b/arch/x86/kvm/svm/sev.c
index 28064060413a..4448f2e512b9 100644
--- a/arch/x86/kvm/svm/sev.c
+++ b/arch/x86/kvm/svm/sev.c
@@ -276,31 +276,24 @@ static int sev_guest_init(struct kvm *kvm, struct kvm_sev_cmd *argp)

static int sev_bind_asid(struct kvm *kvm, unsigned int handle, int *error)
{
- struct sev_data_activate activate;
- int asid = sev_get_asid(kvm);
- int ret;
-
- /* activate ASID on the given handle */
- activate.handle = handle;
- activate.asid = asid;
- ret = sev_guest_activate(&activate, error);
+ struct sev_data_activate activate = {
+ .handle = handle,
+ .asid = sev_get_asid(kvm),
+ };

- return ret;
+ return sev_guest_activate(&activate, error);
}

static int __sev_issue_cmd(int fd, int id, void *data, int *error)
{
struct fd f;
- int ret;

f = fdget(fd);
if (!f.file)
return -EBADF;

- ret = sev_issue_cmd_external_user(f.file, id, data, error);
-
fdput(f);
- return ret;
+ return sev_issue_cmd_external_user(f.file, id, data, error);
}

static int sev_issue_cmd(struct kvm *kvm, int id, void *data, int *error)
--
2.25.1