Messages in this thread | | | Date | Fri, 26 Jun 2020 14:44:37 -0300 | From | Jason Gunthorpe <> | Subject | Re: [PATCH] nouveau: fix page fault on device private memory |
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On Fri, Jun 26, 2020 at 10:26:26AM -0700, Ralph Campbell wrote: > If system memory is migrated to device private memory and no GPU MMU > page table entry exists, the GPU will fault and call hmm_range_fault() > to get the PFN for the page. Since the .dev_private_owner pointer in > struct hmm_range is not set, hmm_range_fault returns an error which > results in the GPU program stopping with a fatal fault. > Fix this by setting .dev_private_owner appropriately. > > Fixes: 08ddddda667b ("mm/hmm: check the device private page owner in hmm_range_fault()") > Signed-off-by: Ralph Campbell <rcampbell@nvidia.com> > --- > > This is based on Linux-5.8.0-rc2 and is for Ben Skeggs nouveau tree. > It doesn't depend on any of the other nouveau/HMM changes I have > recently posted.
Makes sense to me
Reviewed-by: Jason Gunthorpe <jgg@mellanox.com>
Jason
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