In init_rmode_tss(), there two variables indicating the return
value, r and ret, and it return 0 on error, 1 on success. The function
is only called by vmx_set_tss_addr(), and r is redundant.
This patch removes the redundant variable, by making init_rmode_tss()
return 0 on success, -errno on failure.
Signed-off-by: Paolo Bonzini <pbonzini@xxxxxxxxxx>
---
arch/x86/kvm/vmx.c | 13 +++----------
1 files changed, 3 insertions(+), 10 deletions(-)
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index 41bbddb..1e6b493 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -3930,7 +3930,7 @@ static int init_rmode_tss(struct kvm *kvm)
{
gfn_t fn;
u16 data = 0;
- int r, idx, ret = 0;
+ int idx, r;
idx = srcu_read_lock(&kvm->srcu);
fn = kvm->arch.tss_addr >> PAGE_SHIFT;
@@ -3952,13 +3952,9 @@ static int init_rmode_tss(struct kvm *kvm)
r = kvm_write_guest_page(kvm, fn, &data,
RMODE_TSS_SIZE - 2 * PAGE_SIZE - 1,
sizeof(u8));
- if (r < 0)
- goto out;
-
- ret = 1;
out:
srcu_read_unlock(&kvm->srcu, idx);
- return ret;
+ return r;
}
static int init_rmode_identity_map(struct kvm *kvm)
@@ -4750,10 +4746,7 @@ static int vmx_set_tss_addr(struct kvm *kvm, unsigned int addr)
if (ret)
return ret;
kvm->arch.tss_addr = addr;
- if (!init_rmode_tss(kvm))
- return -ENOMEM;
-
- return 0;
+ return init_rmode_tss(kvm);
}
static bool rmode_exception(struct kvm_vcpu *vcpu, int vec)
--
1.7.1
--
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