Re: [Xen-devel] [PATCH] vt-d: fix wrong addr in IOTLB invalidation descriptor

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 11.07.12 at 02:58, "Zhang, Yang Z" <yang.z.zhang@xxxxxxxxx> wrote:
> According to vt-d specs, the addr in IOTLB invalidation descriptor should be 
> 4K page aligned.

Could you please put this into both 4.x-testing trees, too?

Thanks, Jan

> Signed-off-by: Yang Zhang <yang.z.zhang@xxxxxxxxx>
> 
> diff -r 0455d8317631 xen/drivers/passthrough/vtd/qinval.c
> --- a/xen/drivers/passthrough/vtd/qinval.c      Thu Jun 28 18:43:28 2012 +0100
> +++ b/xen/drivers/passthrough/vtd/qinval.c      Wed Jul 11 08:43:24 2012 
> +0800
> @@ -140,7 +140,7 @@ static int gen_iotlb_inv_dsc(struct iomm
>      qinval_entry->q.iotlb_inv_dsc.hi.am = am;
>      qinval_entry->q.iotlb_inv_dsc.hi.ih = ih;
>      qinval_entry->q.iotlb_inv_dsc.hi.res_1 = 0;
> -    qinval_entry->q.iotlb_inv_dsc.hi.addr = addr;
> +    qinval_entry->q.iotlb_inv_dsc.hi.addr = addr >> PAGE_SHIFT_4K;
> 
>      unmap_vtd_domain_page(qinval_entries);
>      spin_unlock_irqrestore(&qi_ctrl->qinval_lock, flags);
> 
> 
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