On Wed, 2015-10-28 at 19:00 +0100, Eric Auger wrote:
> On 10/28/2015 06:55 PM, Will Deacon wrote:
> > On Wed, Oct 28, 2015 at 06:48:41PM +0100, Eric Auger wrote:
> >> On 10/28/2015 06:37 PM, Alex Williamson wrote:
> >>> Ok, so with hopefully correcting my understand of what this does, isn't
> >>> t
On 10/28/2015 06:55 PM, Will Deacon wrote:
> On Wed, Oct 28, 2015 at 06:48:41PM +0100, Eric Auger wrote:
>> On 10/28/2015 06:37 PM, Alex Williamson wrote:
>>> Ok, so with hopefully correcting my understand of what this does, isn't
>>> this effectively the same:
>>>
>>> diff --git a/drivers/vfio/vfi
On 10/28/2015 06:37 PM, Alex Williamson wrote:
> On Wed, 2015-10-28 at 18:10 +0100, Eric Auger wrote:
>> Hi Alex,
>> On 10/28/2015 05:27 PM, Alex Williamson wrote:
>>> On Wed, 2015-10-28 at 13:12 +, Eric Auger wrote:
Current vfio_pgsize_bitmap code hides the supported IOMMU page
sizes
On Wed, Oct 28, 2015 at 06:48:41PM +0100, Eric Auger wrote:
> On 10/28/2015 06:37 PM, Alex Williamson wrote:
> > Ok, so with hopefully correcting my understand of what this does, isn't
> > this effectively the same:
> >
> > diff --git a/drivers/vfio/vfio_iommu_type1.c
> > b/drivers/vfio/vfio_iomm
Alex,
On 10/28/2015 06:28 PM, Alex Williamson wrote:
> On Wed, 2015-10-28 at 17:14 +, Will Deacon wrote:
>> On Wed, Oct 28, 2015 at 10:27:28AM -0600, Alex Williamson wrote:
>>> On Wed, 2015-10-28 at 13:12 +, Eric Auger wrote:
diff --git a/drivers/vfio/vfio_iommu_type1.c
b/drivers
On Wed, 2015-10-28 at 18:10 +0100, Eric Auger wrote:
> Hi Alex,
> On 10/28/2015 05:27 PM, Alex Williamson wrote:
> > On Wed, 2015-10-28 at 13:12 +, Eric Auger wrote:
> >> Current vfio_pgsize_bitmap code hides the supported IOMMU page
> >> sizes smaller than PAGE_SIZE. As a result, in case the I
On Wed, 2015-10-28 at 17:14 +, Will Deacon wrote:
> On Wed, Oct 28, 2015 at 10:27:28AM -0600, Alex Williamson wrote:
> > On Wed, 2015-10-28 at 13:12 +, Eric Auger wrote:
> > > diff --git a/drivers/vfio/vfio_iommu_type1.c
> > > b/drivers/vfio/vfio_iommu_type1.c
> > > index 57d8c37..13fb974
Hi Will,
On 10/28/2015 06:14 PM, Will Deacon wrote:
> On Wed, Oct 28, 2015 at 10:27:28AM -0600, Alex Williamson wrote:
>> On Wed, 2015-10-28 at 13:12 +, Eric Auger wrote:
>>> diff --git a/drivers/vfio/vfio_iommu_type1.c
>>> b/drivers/vfio/vfio_iommu_type1.c
>>> index 57d8c37..13fb974 100644
>>
On Wed, Oct 28, 2015 at 10:27:28AM -0600, Alex Williamson wrote:
> On Wed, 2015-10-28 at 13:12 +, Eric Auger wrote:
> > diff --git a/drivers/vfio/vfio_iommu_type1.c
> > b/drivers/vfio/vfio_iommu_type1.c
> > index 57d8c37..13fb974 100644
> > --- a/drivers/vfio/vfio_iommu_type1.c
> > +++ b/drive
Hi Alex,
On 10/28/2015 05:27 PM, Alex Williamson wrote:
> On Wed, 2015-10-28 at 13:12 +, Eric Auger wrote:
>> Current vfio_pgsize_bitmap code hides the supported IOMMU page
>> sizes smaller than PAGE_SIZE. As a result, in case the IOMMU
>> does not support PAGE_SIZE page, the alignment check on
On Wed, 2015-10-28 at 13:12 +, Eric Auger wrote:
> Current vfio_pgsize_bitmap code hides the supported IOMMU page
> sizes smaller than PAGE_SIZE. As a result, in case the IOMMU
> does not support PAGE_SIZE page, the alignment check on map/unmap
> is done with larger page sizes, if any. This can
On Wed, Oct 28, 2015 at 01:12:45PM +, Eric Auger wrote:
> Current vfio_pgsize_bitmap code hides the supported IOMMU page
> sizes smaller than PAGE_SIZE. As a result, in case the IOMMU
> does not support PAGE_SIZE page, the alignment check on map/unmap
> is done with larger page sizes, if any. T
Current vfio_pgsize_bitmap code hides the supported IOMMU page
sizes smaller than PAGE_SIZE. As a result, in case the IOMMU
does not support PAGE_SIZE page, the alignment check on map/unmap
is done with larger page sizes, if any. This can fail although
mapping could be done with pages smaller than
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