On Fri, Dec 06, 2013 at 02:38:28PM +, Richard Yao wrote:
> On 12/06/2013 06:14 AM, Will Deacon wrote:
> > On Wed, Dec 04, 2013 at 08:43:18PM +, Richard Yao wrote:
> >> diff --git a/net/9p/trans_virtio.c b/net/9p/trans_virtio.c
> >> index 9c5a1aa..5d1d04b 100644
> >> --- a/net/9p/trans_virti
On 12/06/2013 06:14 AM, Will Deacon wrote:
> On Wed, Dec 04, 2013 at 08:43:18PM +, Richard Yao wrote:
>> The 9p-virtio transport does zero copy on things larger than 1024 bytes
>> in size. It accomplishes this by returning the physical addresses of
>> pages to the virtio-pci device. At present,
On Wed, Dec 04, 2013 at 08:43:18PM +, Richard Yao wrote:
> The 9p-virtio transport does zero copy on things larger than 1024 bytes
> in size. It accomplishes this by returning the physical addresses of
> pages to the virtio-pci device. At present, the translation is usually a
> bit shift.
>
>
On 04.12.2013, at 21:43, Richard Yao wrote:
> The 9p-virtio transport does zero copy on things larger than 1024 bytes
> in size. It accomplishes this by returning the physical addresses of
> pages to the virtio-pci device. At present, the translation is usually a
> bit shift.
>
> However, that
The 9p-virtio transport does zero copy on things larger than 1024 bytes
in size. It accomplishes this by returning the physical addresses of
pages to the virtio-pci device. At present, the translation is usually a
bit shift.
However, that approach produces an invalid page address when we
read/writ
