On Fri, 28 Aug 2020 at 00:34, Tom Murphy wrote:
>
> On Thu, 27 Aug 2020 at 22:36, Logan Gunthorpe wrote:
> >
> >
> >
> > On 2020-08-23 6:04 p.m., Tom Murphy wrote:
> > > I have added a check for the sg_dma_len == 0 :
> > > """
> > > } __sgt_iter(struct scatterlist *sgl, bool dma) {
> > >
On 2020-08-23 6:04 p.m., Tom Murphy wrote:
> I have added a check for the sg_dma_len == 0 :
> """
> } __sgt_iter(struct scatterlist *sgl, bool dma) {
> struct sgt_iter s = { .sgp = sgl };
>
> + if (sgl && sg_dma_len(sgl) == 0)
> + s.sgp = NULL;
>
> if (s.sgp) {
On Thu, 27 Aug 2020 at 22:36, Logan Gunthorpe wrote:
>
>
>
> On 2020-08-23 6:04 p.m., Tom Murphy wrote:
> > I have added a check for the sg_dma_len == 0 :
> > """
> > } __sgt_iter(struct scatterlist *sgl, bool dma) {
> > struct sgt_iter s = { .sgp = sgl };
> >
> > + if (sgl && sg_dm
That would be great!
On Wed., Aug. 26, 2020, 2:14 p.m. Robin Murphy,
wrote:
> Hi Tom,
>
> On 2019-12-21 15:03, Tom Murphy wrote:
> > This patchset converts the intel iommu driver to the dma-iommu api.
> >
> > While converting the driver I exposed a bug in the intel i915 driver
> which causes a h
On Mon, Aug 24, 2020 at 2:56 AM Tom Murphy wrote:
>
> Hi Logan/All,
>
> I have added a check for the sg_dma_len == 0 :
> """
> } __sgt_iter(struct scatterlist *sgl, bool dma) {
> struct sgt_iter s = { .sgp = sgl };
>
> + if (sgl && sg_dma_len(sgl) == 0)
> + s.sgp = NULL;
>
Hi Tom,
On 2019-12-21 15:03, Tom Murphy wrote:
This patchset converts the intel iommu driver to the dma-iommu api.
While converting the driver I exposed a bug in the intel i915 driver which
causes a huge amount of artifacts on the screen of my laptop. You can see a
picture of it here:
https:/
Hi Logan/All,
I have added a check for the sg_dma_len == 0 :
"""
} __sgt_iter(struct scatterlist *sgl, bool dma) {
struct sgt_iter s = { .sgp = sgl };
+ if (sgl && sg_dma_len(sgl) == 0)
+ s.sgp = NULL;
if (s.sgp) {
.
"""
at location [1].
but it do
On 2020-05-29 3:11 p.m., Marek Szyprowski wrote:
> Patches are pending:
> https://lore.kernel.org/linux-iommu/20200513132114.6046-1-m.szyprow...@samsung.com/T/
Cool, nice! Though, I still don't think that fixes the issue in
i915_scatterlist.h given it still ignores sg_dma_len() and strictly
rel
On 2020-05-29 6:45 a.m., Christoph Hellwig wrote:
> On Thu, May 28, 2020 at 06:00:44PM -0600, Logan Gunthorpe wrote:
>>> This issue is most likely in the i915 driver and is most likely caused by
>>> the driver not respecting the return value of the dma_map_ops::map_sg
>>> function. You can see
Hi Logan,
On 29.05.2020 21:05, Logan Gunthorpe wrote:
> On 2020-05-29 6:45 a.m., Christoph Hellwig wrote:
>> On Thu, May 28, 2020 at 06:00:44PM -0600, Logan Gunthorpe wrote:
This issue is most likely in the i915 driver and is most likely caused by
the driver not respecting the return va
Hi Tom,
On 2019-12-21 8:03 a.m., Tom Murphy wrote:
> This patchset converts the intel iommu driver to the dma-iommu api.
Just wanted to note that I've rebased your series on recent kernels and
have done some testing on my old Sandybridge machine (without the DO NOT
MERGE patch) and have found no
Any news on this? Is there anyone who wants to try and fix this possible bug?
On Mon, 23 Dec 2019 at 03:41, Jani Nikula wrote:
>
> On Mon, 23 Dec 2019, Robin Murphy wrote:
> > On 2019-12-23 10:37 am, Jani Nikula wrote:
> >> On Sat, 21 Dec 2019, Tom Murphy wrote:
> >>> This patchset converts the
On Mon, 23 Dec 2019, Robin Murphy wrote:
> On 2019-12-23 10:37 am, Jani Nikula wrote:
>> On Sat, 21 Dec 2019, Tom Murphy wrote:
>>> This patchset converts the intel iommu driver to the dma-iommu api.
>>>
>>> While converting the driver I exposed a bug in the intel i915 driver
>>> which causes a h
On 2019-12-23 10:37 am, Jani Nikula wrote:
On Sat, 21 Dec 2019, Tom Murphy wrote:
This patchset converts the intel iommu driver to the dma-iommu api.
While converting the driver I exposed a bug in the intel i915 driver
which causes a huge amount of artifacts on the screen of my
laptop. You can
On Sat, 21 Dec 2019, Tom Murphy wrote:
> This patchset converts the intel iommu driver to the dma-iommu api.
>
> While converting the driver I exposed a bug in the intel i915 driver
> which causes a huge amount of artifacts on the screen of my
> laptop. You can see a picture of it here:
> https://
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