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Message-Id: <20191022003537.13013-3-sean.j.christopherson@intel.com>
Date: Mon, 21 Oct 2019 17:35:24 -0700
From: Sean Christopherson <sean.j.christopherson@...el.com>
To: James Hogan <jhogan@...nel.org>,
Paul Mackerras <paulus@...abs.org>,
Christian Borntraeger <borntraeger@...ibm.com>,
Janosch Frank <frankja@...ux.ibm.com>,
Paolo Bonzini <pbonzini@...hat.com>,
Radim Krčmář <rkrcmar@...hat.com>,
Marc Zyngier <maz@...nel.org>
Cc: David Hildenbrand <david@...hat.com>,
Cornelia Huck <cohuck@...hat.com>,
Sean Christopherson <sean.j.christopherson@...el.com>,
Vitaly Kuznetsov <vkuznets@...hat.com>,
Wanpeng Li <wanpengli@...cent.com>,
Jim Mattson <jmattson@...gle.com>,
Joerg Roedel <joro@...tes.org>,
James Morse <james.morse@....com>,
Julien Thierry <julien.thierry.kdev@...il.com>,
Suzuki K Poulose <suzuki.poulose@....com>,
linux-mips@...r.kernel.org, kvm-ppc@...r.kernel.org,
kvm@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
kvmarm@...ts.cs.columbia.edu, linux-kernel@...r.kernel.org
Subject: [PATCH v2 02/15] KVM: Don't free new memslot if allocation of said memslot fails
The two implementations of kvm_arch_create_memslot() in x86 and PPC are
both good citizens and free up all local resources if creation fails.
Return immediately (via a superfluous goto) instead of calling
kvm_free_memslot().
Note, the call to kvm_free_memslot() is effectively an expensive nop in
this case as there are no resources to be freed.
No functional change intended.
Signed-off-by: Sean Christopherson <sean.j.christopherson@...el.com>
---
virt/kvm/kvm_main.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index 9afd706dc038..2cb38b2148cb 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -1014,7 +1014,7 @@ int __kvm_set_memory_region(struct kvm *kvm,
new.userspace_addr = mem->userspace_addr;
if (kvm_arch_create_memslot(kvm, &new, npages))
- goto out_free;
+ goto out;
}
/* Allocate page dirty bitmap if needed */
--
2.22.0
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