From: Avi Kivity <avi@qumranet.com>
To: Anthony Liguori <aliguori@us.ibm.com>
Cc: kvm-devel@lists.sourceforge.net, Marcelo Tosatti <mtosatti@redhat.com>
Subject: Re: [PATCH 1/5] Support more than 3.5GB with virtio (v3)
Date: Fri, 09 May 2008 18:24:02 +0300 [thread overview]
Message-ID: <48246C92.8040900@qumranet.com> (raw)
In-Reply-To: <1210183780-19024-1-git-send-email-aliguori@us.ibm.com>
Anthony Liguori wrote:
> We're pretty sloppy in virtio right now about phys_ram_base assumptions. This
> patch is an incremental step between what we have today and a full blown DMA
> API. I backported the DMA API but the performance impact was not acceptable
> to me. There's only a slight performance impact with this particular patch.
>
> Since we're no longer assuming guest physical memory is contiguous, we need
> a more complex way to validate the memory regions than just checking if it's
> within ram_size.
>
Applied patches 1-2. Since patch 4 is under contention on qemu-devel,
and 3 and 5 depend on it, I'd like to get the can_receive semantic
change accepted first.
--
Do not meddle in the internals of kernels, for they are subtle and quick to panic.
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next prev parent reply other threads:[~2008-05-09 15:24 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-05-07 18:09 [PATCH 1/5] Support more than 3.5GB with virtio (v3) Anthony Liguori
2008-05-07 18:09 ` [PATCH 2/5] Validate the SG list layouts in virtio Anthony Liguori
2008-05-07 18:09 ` [PATCH 3/5] Revert virtio tap hack (v3) Anthony Liguori
2008-05-07 18:09 ` [PATCH 4/5] Make virtio-net can_receive more accurate (v3) Anthony Liguori
2008-05-07 18:09 ` [PATCH 5/5] Stop dropping so many RX packets in tap (v3) Anthony Liguori
2008-05-11 14:34 ` Avi Kivity
2008-05-11 18:30 ` Anthony Liguori
2008-05-11 18:52 ` Avi Kivity
2008-05-11 20:44 ` Anthony Liguori
2008-05-12 6:59 ` Avi Kivity
2008-05-09 15:24 ` Avi Kivity [this message]
2008-05-09 18:37 ` [PATCH 1/5] Support more than 3.5GB with virtio (v3) Anthony Liguori
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