Messages in this thread | | | Date | Thu, 19 Feb 2009 10:20:25 -0300 | From | Marcelo Tosatti <> | Subject | Re: [PATCH] kvm mmu: fix another largepage memory leak |
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On Thu, Feb 19, 2009 at 12:18:56PM +0100, Joerg Roedel wrote: > In the paging_fetch function rmap_remove is called after setting a large > pte to non-present. This causes rmap_remove to not drop the reference to > the large page. The result is a memory leak of that page. > > Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> > --- > arch/x86/kvm/paging_tmpl.h | 2 +- > 1 files changed, 1 insertions(+), 1 deletions(-) > > diff --git a/arch/x86/kvm/paging_tmpl.h b/arch/x86/kvm/paging_tmpl.h > index 7314c09..0f11792 100644 > --- a/arch/x86/kvm/paging_tmpl.h > +++ b/arch/x86/kvm/paging_tmpl.h > @@ -306,9 +306,9 @@ static u64 *FNAME(fetch)(struct kvm_vcpu *vcpu, gva_t addr, > continue; > > if (is_large_pte(*sptep)) { > + rmap_remove(vcpu->kvm, sptep); > set_shadow_pte(sptep, shadow_trap_nonpresent_pte); > kvm_flush_remote_tlbs(vcpu->kvm); > - rmap_remove(vcpu->kvm, sptep); > } > > if (level == PT_DIRECTORY_LEVEL > --
ACK
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