Re: [Xen-devel] [PATCH v2] x86/vtd: fix IOMMU share PT destruction path

[Wei Liu <wei.liu2@xxxxxxxxxx>]

On Thu, Oct 11, 2018 at 08:30:59AM +0000, Tian, Kevin wrote:
> > From: Wei Liu [mailto:wei.liu2@xxxxxxxxxx]
> > Sent: Thursday, October 11, 2018 4:28 PM
> > 
> > On Tue, Oct 09, 2018 at 03:57:08PM +0100, Wei Liu wrote:
> > > Commit 2916951c1 ("mm / iommu: include need_iommu() test in
> > > iommu_use_hap_pt()") included need_iommu() in iommu_use_hap_pt
> > and
> > > 91d4eca7add ("mm / iommu: split need_iommu() into has_iommu_pt()
> > and
> > > need_iommu_pt_sync()") made things finer grain by spliting need_iommu
> > > into three states.
> > >
> > > The destruction path can't use iommu_use_hap_pt because at the point
> > > platform op is called, IOMMU is either already switched to or has
> > > always been in disabled state, and the shared PT test would always be
> > > false.
> > >
> > > Signed-off-by: Wei Liu <wei.liu2@xxxxxxxxxx>
> > 
> > Kevin, can you ack/nack this patch? Staging is currently blocked by a
> > bug which is fixed by this patch.
> > 
> 
> Sorry I thought I've sent the ack but looks not:
> 
> Acked-by: Kevin Tian <kevin.tian@xxxxxxxxx>

Thank you!

Wei.

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxxx
https://lists.xenproject.org/mailman/listinfo/xen-devel