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...;) > Signed-off-by: Ralph Campbell <rcampbell at nvidia.com> > --- > drivers/gpu/drm/nouveau/nouveau_dmem.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/gpu/drm/nouveau/nouveau_dmem.c b/drivers/gpu/drm/nouveau/nouveau_dmem.c > index e5c230d9ae24..cc9993837508 100644 > --- a/drivers/gpu/drm/nouveau/nouveau_dmem.c > +++ b/drivers/gpu/drm/nouveau/nouveau_dmem.c > @@ -550,7 +550,7 @@ static unsigned long nouveau_dmem_migrate_copy_one(struct nouveau_drm *drm, > DMA_BIDIRECTIONAL); > if (dma_mapping_error(dev, *dma_add...

...ppc_uvmem_pgmap; > + mig.dir = MIGRATE_VMA_FROM_DEVICE_PRIVATE; > > mutex_lock(&kvm->arch.uvmem_lock); > /* The requested page is already paged-out, nothing to do */ > diff --git a/drivers/gpu/drm/nouveau/nouveau_dmem.c b/drivers/gpu/drm/nouveau/nouveau_dmem.c > index e5c230d9ae24..e5c83b8ee82e 100644 > +++ b/drivers/gpu/drm/nouveau/nouveau_dmem.c > @@ -183,6 +183,7 @@ static vm_fault_t nouveau_dmem_migrate_to_ram(struct vm_fault *vmf) > .src = &src, > .dst = &dst, > .src_owner = drm->dev, > + .dir = MIGRATE_VMA_FROM_DEVICE_PRIVATE,...

...mm: fix migrate zero page to GPU") Signed-off-by: Ralph Campbell <rcampbell at nvidia.com> --- drivers/gpu/drm/nouveau/nouveau_dmem.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/nouveau/nouveau_dmem.c b/drivers/gpu/drm/nouveau/nouveau_dmem.c index e5c230d9ae24..cc9993837508 100644 --- a/drivers/gpu/drm/nouveau/nouveau_dmem.c +++ b/drivers/gpu/drm/nouveau/nouveau_dmem.c @@ -550,7 +550,7 @@ static unsigned long nouveau_dmem_migrate_copy_one(struct nouveau_drm *drm, DMA_BIDIRECTIONAL); if (dma_mapping_error(dev, *dma_addr)) goto out_free_page;...

...mm: fix migrate zero page to GPU") Signed-off-by: Ralph Campbell <rcampbell at nvidia.com> --- drivers/gpu/drm/nouveau/nouveau_dmem.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/nouveau/nouveau_dmem.c b/drivers/gpu/drm/nouveau/nouveau_dmem.c index e5c230d9ae24..cc9993837508 100644 --- a/drivers/gpu/drm/nouveau/nouveau_dmem.c +++ b/drivers/gpu/drm/nouveau/nouveau_dmem.c @@ -550,7 +550,7 @@ static unsigned long nouveau_dmem_migrate_copy_one(struct nouveau_drm *drm, DMA_BIDIRECTIONAL); if (dma_mapping_error(dev, *dma_addr)) goto out_free_page;...

...Campbell <rcampbell at nvidia.com> > > --- > > drivers/gpu/drm/nouveau/nouveau_dmem.c | 2 +- > > 1 file changed, 1 insertion(+), 1 deletion(-) > > > > diff --git a/drivers/gpu/drm/nouveau/nouveau_dmem.c b/drivers/gpu/drm/nouveau/nouveau_dmem.c > > index e5c230d9ae24..cc9993837508 100644 > > --- a/drivers/gpu/drm/nouveau/nouveau_dmem.c > > +++ b/drivers/gpu/drm/nouveau/nouveau_dmem.c > > @@ -550,7 +550,7 @@ static unsigned long nouveau_dmem_migrate_copy_one(struct nouveau_drm *drm, > > DMA_BIDIRECTI...

...mig.dir = MIGRATE_VMA_FROM_DEVICE_PRIVATE; >> >> mutex_lock(&kvm->arch.uvmem_lock); >> /* The requested page is already paged-out, nothing to do */ >> diff --git a/drivers/gpu/drm/nouveau/nouveau_dmem.c b/drivers/gpu/drm/nouveau/nouveau_dmem.c >> index e5c230d9ae24..e5c83b8ee82e 100644 >> +++ b/drivers/gpu/drm/nouveau/nouveau_dmem.c >> @@ -183,6 +183,7 @@ static vm_fault_t nouveau_dmem_migrate_to_ram(struct vm_fault *vmf) >> .src = &src, >> .dst = &dst, >> .src_owner = drm->dev, >> + .dir = MIGRAT...

These are based on 5.8.0-rc2 and intended for Ben Skeggs' nouveau tree. I believe the changes can be queued for 5.8-rcX after being reviewed. These were part of a larger series but I'm resending them separately as suggested by Jason Gunthorpe. https://lore.kernel.org/linux-mm/20200619215649.32297-1-rcampbell at nvidia.com/ Note that in order to exercise/test patch 2 here, you will need a

...fn; mig.src_owner = &kvmppc_uvmem_pgmap; + mig.dir = MIGRATE_VMA_FROM_DEVICE_PRIVATE; mutex_lock(&kvm->arch.uvmem_lock); /* The requested page is already paged-out, nothing to do */ diff --git a/drivers/gpu/drm/nouveau/nouveau_dmem.c b/drivers/gpu/drm/nouveau/nouveau_dmem.c index e5c230d9ae24..e5c83b8ee82e 100644 --- a/drivers/gpu/drm/nouveau/nouveau_dmem.c +++ b/drivers/gpu/drm/nouveau/nouveau_dmem.c @@ -183,6 +183,7 @@ static vm_fault_t nouveau_dmem_migrate_to_ram(struct vm_fault *vmf) .src = &src, .dst = &dst, .src_owner = drm->dev, + .dir = MIGRATE_VMA_FROM_D...

...mig.pgmap_owner = &kvmppc_uvmem_pgmap; + mig.flags = MIGRATE_VMA_SELECT_DEVICE_PRIVATE; mutex_lock(&kvm->arch.uvmem_lock); /* The requested page is already paged-out, nothing to do */ diff --git a/drivers/gpu/drm/nouveau/nouveau_dmem.c b/drivers/gpu/drm/nouveau/nouveau_dmem.c index e5c230d9ae24..78b9e3c2a5b3 100644 --- a/drivers/gpu/drm/nouveau/nouveau_dmem.c +++ b/drivers/gpu/drm/nouveau/nouveau_dmem.c @@ -182,7 +182,8 @@ static vm_fault_t nouveau_dmem_migrate_to_ram(struct vm_fault *vmf) .end = vmf->address + PAGE_SIZE, .src = &src, .dst = &dst, - .src_owner = dr...

...mig.pgmap_owner = &kvmppc_uvmem_pgmap; + mig.flags = MIGRATE_VMA_SELECT_DEVICE_PRIVATE; mutex_lock(&kvm->arch.uvmem_lock); /* The requested page is already paged-out, nothing to do */ diff --git a/drivers/gpu/drm/nouveau/nouveau_dmem.c b/drivers/gpu/drm/nouveau/nouveau_dmem.c index e5c230d9ae24..78b9e3c2a5b3 100644 --- a/drivers/gpu/drm/nouveau/nouveau_dmem.c +++ b/drivers/gpu/drm/nouveau/nouveau_dmem.c @@ -182,7 +182,8 @@ static vm_fault_t nouveau_dmem_migrate_to_ram(struct vm_fault *vmf) .end = vmf->address + PAGE_SIZE, .src = &src, .dst = &dst, - .src_owner = dr...

...ernel.org/lkml/20200421231107.30958-1-rcampbell at nvidia.com/ drivers/gpu/drm/nouveau/nouveau_dmem.c | 75 ++++++++++++++++++++++---- 1 file changed, 66 insertions(+), 9 deletions(-) diff --git a/drivers/gpu/drm/nouveau/nouveau_dmem.c b/drivers/gpu/drm/nouveau/nouveau_dmem.c index cbc71567f9a5..e5c230d9ae24 100644 --- a/drivers/gpu/drm/nouveau/nouveau_dmem.c +++ b/drivers/gpu/drm/nouveau/nouveau_dmem.c @@ -56,6 +56,8 @@ enum nouveau_aper { typedef int (*nouveau_migrate_copy_t)(struct nouveau_drm *drm, u64 npages, enum nouveau_aper, u64 dst_addr, enum nouveau_aper, u64 src_addr);...

The goal for this series is to avoid device private memory TLB invalidations when migrating a range of addresses from system memory to device private memory and some of those pages have already been migrated. The approach taken is to introduce a new mmu notifier invalidation event type and use that in the device driver to skip invalidation callbacks from migrate_vma_setup(). The device driver is

The goal for this series is to avoid device private memory TLB invalidations when migrating a range of addresses from system memory to device private memory and some of those pages have already been migrated. The approach taken is to introduce a new mmu notifier invalidation event type and use that in the device driver to skip invalidation callbacks from migrate_vma_setup(). The device driver is

The goal for this series is to avoid device private memory TLB invalidations when migrating a range of addresses from system memory to device private memory and some of those pages have already been migrated. The approach taken is to introduce a new mmu notifier invalidation event type and use that in the device driver to skip invalidation callbacks from migrate_vma_setup(). The device driver is

These patches apply to linux-5.8.0-rc1. Patches 1-3 should probably go into 5.8, the others can be queued for 5.9. Patches 4-6 improve the HMM self tests. Patch 7-8 prepare nouveau for the meat of this series which adds support and testing for compound page mapping of system memory (patches 9-11) and compound page migration to device private memory (patches 12-16). Since these changes are split