Re: [Qemu-block] [PATCH 2/3] xen-disk: add support for multi-page shared rings

2017-06-21 Thread Paul Durrant
> -Original Message- > From: Stefano Stabellini [mailto:sstabell...@kernel.org] > Sent: 20 June 2017 23:51 > To: Paul Durrant > Cc: xen-de...@lists.xenproject.org; qemu-de...@nongnu.org; qemu- > bl...@nongnu.org; Stefano Stabellini ; Anthony > Perard ; Kevin Wolf ; > Max Reitz > Subject:

Re: [Qemu-block] [PATCH 2/3] xen-disk: add support for multi-page shared rings

2017-06-20 Thread Stefano Stabellini
On Tue, 20 Jun 2017, Paul Durrant wrote: > The blkif protocol has had provision for negotiation of multi-page shared > rings for some time now and many guest OS have support in their frontend > drivers. > > This patch makes the necessary modifications to xen-disk support a shared > ring up to orde

[Qemu-block] [PATCH 2/3] xen-disk: add support for multi-page shared rings

2017-06-20 Thread Paul Durrant
The blkif protocol has had provision for negotiation of multi-page shared rings for some time now and many guest OS have support in their frontend drivers. This patch makes the necessary modifications to xen-disk support a shared ring up to order 4 (i.e. 16 pages). Signed-off-by: Paul Durrant --