On Tue, Oct 27, 2020 at 06:38:40PM +0100, Jean-Philippe Brucker wrote:
> On Fri, Oct 23, 2020 at 12:47:02PM -0400, Peter Xu wrote:
> > On Fri, Oct 23, 2020 at 09:48:58AM +0200, Jean-Philippe Brucker wrote:
> > > Arm CPUs and SMMU support 4k, 16k and 64k page sizes. I don't think 16k is
> > > used
On Fri, Oct 23, 2020 at 12:47:02PM -0400, Peter Xu wrote:
> On Fri, Oct 23, 2020 at 09:48:58AM +0200, Jean-Philippe Brucker wrote:
> > Arm CPUs and SMMU support 4k, 16k and 64k page sizes. I don't think 16k is
> > used anywhere but some distributions chose 64k (RHEL, I think?), others
> > 4k, so
On Fri, Oct 23, 2020 at 09:48:58AM +0200, Jean-Philippe Brucker wrote:
> Arm CPUs and SMMU support 4k, 16k and 64k page sizes. I don't think 16k is
> used anywhere but some distributions chose 64k (RHEL, I think?), others
> 4k, so we need to support both.
>
> Unfortunately as noted above
On Thu, Oct 22, 2020 at 04:56:16PM -0400, Peter Xu wrote:
> On Thu, Oct 22, 2020 at 06:39:37PM +0200, Jean-Philippe Brucker wrote:
> > So what I'd like to do for next version:
> >
> > * Set qemu_real_host_page_mask as the default page mask, instead of the
> > rather arbitrary TARGET_PAGE_MASK.
On Thu, Oct 22, 2020 at 06:39:37PM +0200, Jean-Philippe Brucker wrote:
> So what I'd like to do for next version:
>
> * Set qemu_real_host_page_mask as the default page mask, instead of the
> rather arbitrary TARGET_PAGE_MASK.
Oh, I thought TARGET_PAGE_MASK was intended - kernel committ
On Fri, Oct 16, 2020 at 03:08:03PM +0200, Auger Eric wrote:
> > +static int virtio_iommu_set_page_size_mask(IOMMUMemoryRegion *mr,
> > + uint64_t page_size_mask,
> > + Error **errp)
> > +{
> > +int new_granule,
On Mon, Oct 19, 2020 at 05:35:39PM -0400, Peter Xu wrote:
> > +/*
> > + * Disallow shrinking the page size. For example if an endpoint only
> > + * supports 64kB pages, we can't globally enable 4kB pages. But that
> > + * shouldn't happen, the host is unlikely to setup differing
On Thu, Oct 08, 2020 at 07:15:57PM +0200, Jean-Philippe Brucker wrote:
> From: Bharat Bhushan
>
> The virtio-iommu device can deal with arbitrary page sizes for virtual
> endpoints, but for endpoints assigned with VFIO it must follow the page
> granule used by the host IOMMU driver.
>
>
Hi Jean,
On 10/8/20 7:15 PM, Jean-Philippe Brucker wrote:
> From: Bharat Bhushan
>
> The virtio-iommu device can deal with arbitrary page sizes for virtual
> endpoints, but for endpoints assigned with VFIO it must follow the page
> granule used by the host IOMMU driver.
>
> Implement the
