Re: [PATCH] kvm: ppc: stop leaking host memory on VM exit

[Avi Kivity <avi@redhat.com>]

Hollis Blanchard wrote:
> When the VM exits, we must call put_page() for every page referenced in the
> shadow TLB.
>
> Without this patch, we usually leak 30-50 host pages (120 - 200 KiB with 4 KiB
> pages). The maximum number of pages leaked is the size of our shadow TLB, 64
> pages.
>
> Signed-off-by: Hollis Blanchard <hollisb@us.ibm.com>
> ---
> The obvious question is "why didn't we see this before?" Basically, we'd never
> looked for it, and since most of our work was in the kernel we always ended up
> rebooting before exhausting host memory.
>
> Since it's such a large leak, and a simple fix, please commit this for 2.6.28.
> This patch does apply to kvm.git with fuzz, but if you prefer I can send a
> separate patch for that later.
>   

Applied on both master and the 2.6.28 queue.


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