[PATCH v2] KVM: x86: get rid of odd out jump label in pdptrs_changed

From: Miaohe Lin
Date: Fri Oct 25 2019 - 06:54:19 EST


The odd out jump label is really not needed. Get rid of
it by return true directly while r < 0 as suggested by
Paolo. This further lead to var changed being unused.
Remove it too.

Signed-off-by: Miaohe Lin <linmiaohe@xxxxxxxxxx>
---
arch/x86/kvm/x86.c | 7 ++-----
1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index ff395f812719..8b0d594a3b90 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -721,7 +721,6 @@ EXPORT_SYMBOL_GPL(load_pdptrs);
bool pdptrs_changed(struct kvm_vcpu *vcpu)
{
u64 pdpte[ARRAY_SIZE(vcpu->arch.walk_mmu->pdptrs)];
- bool changed = true;
int offset;
gfn_t gfn;
int r;
@@ -738,11 +737,9 @@ bool pdptrs_changed(struct kvm_vcpu *vcpu)
r = kvm_read_nested_guest_page(vcpu, gfn, pdpte, offset, sizeof(pdpte),
PFERR_USER_MASK | PFERR_WRITE_MASK);
if (r < 0)
- goto out;
- changed = memcmp(pdpte, vcpu->arch.walk_mmu->pdptrs, sizeof(pdpte)) != 0;
-out:
+ return true;

- return changed;
+ return memcmp(pdpte, vcpu->arch.walk_mmu->pdptrs, sizeof(pdpte)) != 0;
}
EXPORT_SYMBOL_GPL(pdptrs_changed);

--
2.19.1