Re: [Xen-devel] [PATCH 0/2] block/xen-blkfront: Support non-indirect with 64KB page granularity

[Bob Liu]

Hi Julien,

On 09/12/2015 03:31 AM, Julien Grall wrote:
> Hi all,
> 
> This is a follow-up on the previous discussion [1] related to guest using 64KB
> page granularity not booting with backend using non-indirect grant.
> 
> This has been successly tested on ARM64 with both 64KB and 4KB page granularity
> guests and QEMU as the backend. Indeed QEMU is not supported indirect.
> 

What's the linux kernel page granularity of the backend(dom0) in your test?

Did you test if using xen-blkback as the backend? Especially when linux kernel page
granularity of dom0 is 4kB while domU is 64KB.

Thanks,
-Bob

> For a summary of the previous discussion see patch #2.
> 
> This series is based on top of my 64KB page granularity support [2].
> 
> Comments are welcomed.
> 
> Sincerely yours,
> 
> [1] http://lists.xen.org/archives/html/xen-devel/2015-08/msg01659.html
> [2] https://lwn.net/Articles/656797/
> 
> Cc: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
> Cc: "Roger Pau MonnÃ" <roger.pau@xxxxxxxxxx>
> Cc: Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>
> Cc: David Vrabel <david.vrabel@xxxxxxxxxx>
> 
> Julien Grall (2):
>   block/xen-blkfront: Introduce blkif_ring_get_request
>   block/xen-blkfront: Handle non-indirect grant with 64KB pages
> 
>  drivers/block/xen-blkfront.c | 229 ++++++++++++++++++++++++++++++++++++++-----
>  1 file changed, 202 insertions(+), 27 deletions(-)
> 
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