On 2019-05-13 4:21 p.m., Deucher, Alexander wrote: > [CAUTION: External Email] > I reverted all the amdgpu HMM patches for 5.2 because they also > depended on this patch: > https://cgit.freedesktop.org/~agd5f/linux/commit/?h=drm-next-5.2-wip&id=ce05ef71564f7cbe270cd4337c36ee720ea534db > which did not have a clear line of sight for 5.2 either. When was that? I saw "Use HMM for userptr" in Dave's 5.2-rc1 pull request to Linus. Regards, Felix > > Alex > ------------------------------------------------------------------------ > *From:* amd-gfx <amd-gfx-bounces@xxxxxxxxxxxxxxxxxxxxx> on behalf of > Kuehling, Felix <Felix.Kuehling@xxxxxxx> > *Sent:* Monday, May 13, 2019 3:36 PM > *To:* Jerome Glisse > *Cc:* linux-mm@xxxxxxxxx; airlied@xxxxxxxxx; > amd-gfx@xxxxxxxxxxxxxxxxxxxxx; dri-devel@xxxxxxxxxxxxxxxxxxxxx; > alex.deucher@xxxxxxx > *Subject:* Re: [PATCH 2/2] mm/hmm: Only set FAULT_FLAG_ALLOW_RETRY for > non-blocking > [CAUTION: External Email] > > Hi Jerome, > > Do you want me to push the patches to your branch? Or are you going to > apply them yourself? > > Is your hmm-5.2-v3 branch going to make it into Linux 5.2? If so, do you > know when? I'd like to coordinate with Dave Airlie so that we can also > get that update into a drm-next branch soon. > > I see that Linus merged Dave's pull request for Linux 5.2, which > includes the first changes in amdgpu using HMM. They're currently broken > without these two patches. > > Thanks, > Felix > > On 2019-05-10 4:14 p.m., Jerome Glisse wrote: > > [CAUTION: External Email] > > > > On Fri, May 10, 2019 at 07:53:24PM +0000, Kuehling, Felix wrote: > >> Don't set this flag by default in hmm_vma_do_fault. It is set > >> conditionally just a few lines below. Setting it unconditionally > >> can lead to handle_mm_fault doing a non-blocking fault, returning > >> -EBUSY and unlocking mmap_sem unexpectedly. > >> > >> Signed-off-by: Felix Kuehling <Felix.Kuehling@xxxxxxx> > > Reviewed-by: Jérôme Glisse <jglisse@xxxxxxxxxx> > > > >> --- > >> mm/hmm.c | 2 +- > >> 1 file changed, 1 insertion(+), 1 deletion(-) > >> > >> diff --git a/mm/hmm.c b/mm/hmm.c > >> index b65c27d5c119..3c4f1d62202f 100644 > >> --- a/mm/hmm.c > >> +++ b/mm/hmm.c > >> @@ -339,7 +339,7 @@ struct hmm_vma_walk { > >> static int hmm_vma_do_fault(struct mm_walk *walk, unsigned long addr, > >> bool write_fault, uint64_t *pfn) > >> { > >> - unsigned int flags = FAULT_FLAG_ALLOW_RETRY | FAULT_FLAG_REMOTE; > >> + unsigned int flags = FAULT_FLAG_REMOTE; > >> struct hmm_vma_walk *hmm_vma_walk = walk->private; > >> struct hmm_range *range = hmm_vma_walk->range; > >> struct vm_area_struct *vma = walk->vma; > >> -- > >> 2.17.1 > >> > _______________________________________________ > amd-gfx mailing list > amd-gfx@xxxxxxxxxxxxxxxxxxxxx > https://lists.freedesktop.org/mailman/listinfo/amd-gfx _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
