Re: [Qemu-devel] [PATCH v6 2/2] qdisk - hw/block/xen_disk: grant copy implementation

[Anthony PERARD]

On Wed, Sep 07, 2016 at 12:41:00PM +0200, Paulina Szubarczyk wrote:
> Copy data operated on during request from/to local buffers to/from
> the grant references.
> 
> Before grant copy operation local buffers must be allocated what is
> done by calling ioreq_init_copy_buffers. For the 'read' operation,
> first, the qemu device invokes the read operation on local buffers
> and on the completion grant copy is called and buffers are freed.
> For the 'write' operation grant copy is performed before invoking
> write by qemu device.
> 
> A new value 'feature_grant_copy' is added to recognize when the
> grant copy operation is supported by a guest.
> 
> Signed-off-by: Paulina Szubarczyk <address@hidden>

Acked-by: Anthony PERARD <address@hidden>

Thanks,

-- 
Anthony PERARD