search for: nouveau_svmm_invalidate

...); if (!spage || !(args->src[0] & MIGRATE_PFN_MIGRATE)) @@ -154,14 +155,19 @@ static vm_fault_t nouveau_dmem_fault_copy_one(struct nouveau_drm *drm, if (dma_mapping_error(dev, *dma_addr)) goto error_free_page; + svmm = spage->zone_device_data; + mutex_lock(&svmm->mutex); + nouveau_svmm_invalidate(svmm, args->start, args->end); if (drm->dmem->migrate.copy_func(drm, 1, NOUVEAU_APER_HOST, *dma_addr, NOUVEAU_APER_VRAM, nouveau_dmem_page_addr(spage))) goto error_dma_unmap; + mutex_unlock(&svmm->mutex); args->dst[0] = migrate_pfn(page_to_pfn(dpage)) | MIGRATE_PF...

...\ NV_DEBUG((s)->vmm->cli->drm, "svm-%p: "f"\n", (s), ##a) #define SVMM_ERR(s,f,a...) \ @@ -236,6 +243,8 @@ nouveau_svmm_join(struct nouveau_svmm *svmm, u64 inst) static void nouveau_svmm_invalidate(struct nouveau_svmm *svmm, u64 start, u64 limit) { + SVMM_DBG(svmm, "invalidate %016llx-%016llx", start, limit); + if (limit > start) { bool super = svmm->vmm->vmm.object.client->super; svmm->vmm->vmm.object.client->super = true; @@ -248,58 +257,25 @@ nouveau...

...uct nouveau_svm *svm, u64 inst) } struct nouveau_svmm { + struct mmu_notifier notifier; struct nouveau_vmm *vmm; struct { unsigned long start; @@ -96,7 +97,6 @@ struct nouveau_svmm { struct mutex mutex; - struct mm_struct *mm; struct hmm_mirror mirror; }; @@ -251,10 +251,11 @@ nouveau_svmm_invalidate(struct nouveau_svmm *svmm, u64 start, u64 limit) } static int -nouveau_svmm_sync_cpu_device_pagetables(struct hmm_mirror *mirror, - const struct mmu_notifier_range *update) +nouveau_svmm_invalidate_range_start(struct mmu_notifier *mn, + const struct mmu_notifier_range *update) { - s...

...--- [ 98.403810] test-file-priva/6909 is trying to acquire lock: [ 98.409442] ffff888753e39a80 (&vmm->mutex#3){+.+.}, at: nvkm_uvmm_mthd+0x4d5/0xbe0 [nouveau] [ 98.418064] [ 98.418064] but task is already holding lock: [ 98.423915] ffff888759cdc9b0 (&svmm->mutex){+.+.}, at: nouveau_svmm_invalidate_range_start+0x71/0x110 [nouveau] [ 98.434142] [ 98.434142] which lock already depends on the new lock. [ 98.434142] [ 98.442408] [ 98.442408] the existing dependency chain (in reverse order) is: [ 98.449899] [ 98.449899] -> #3 (&svmm->mutex){+.+.}: [ 98.455249]...

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

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

This series adds new functions to the mmu interval notifier API to allow device drivers with MMUs to dynamically mirror a process' page tables based on device faults and invalidation callbacks. The Nouveau driver is updated to use the extended API and a set of stand alone self tests is added to help validate and maintain correctness. The patches are based on linux-5.5.0-rc6 and are for

...----- 3 files changed, 10 insertions(+), 38 deletions(-) diff --git a/drivers/gpu/drm/nouveau/nouveau_svm.c b/drivers/gpu/drm/nouveau/nouveau_svm.c index a9c5c58d425b..6298d2dadb55 100644 --- a/drivers/gpu/drm/nouveau/nouveau_svm.c +++ b/drivers/gpu/drm/nouveau/nouveau_svm.c @@ -252,13 +252,13 @@ nouveau_svmm_invalidate(struct nouveau_svmm *svmm, u64 start, u64 limit) static int nouveau_svmm_sync_cpu_device_pagetables(struct hmm_mirror *mirror, - const struct hmm_update *update) + const struct mmu_notifier_range *update) { struct nouveau_svmm *svmm = container_of(mirror, typeof(*svmm), mirror); un...

This series adds support for transparent huge page migration to migrate_vma_*() and adds nouveau SVM and HMM selftests as consumers. Earlier versions were posted previously [1] and [2]. The patches apply cleanly to the linux-mm 5.10.0-rc2 tree. There are a lot of other THP patches being posted. I don't think there are any semantic conflicts but there may be some merge conflicts depending on

This series adds support for transparent huge page migration to migrate_vma_*() and adds nouveau SVM and HMM selftests as consumers. An earlier version was posted previously [1]. This version now supports splitting a THP midway in the migration process which led to a number of changes. The patches apply cleanly to the current linux-mm tree. Since there are a couple of patches in linux-mm from Dan

Here are seven more patches for things I found to clean up. This was based on top of Christoph's seven patches: "hmm_range_fault related fixes and legacy API removal v3". I assume this will go into Jason's tree since there will likely be more HMM changes in this cycle. Changes from v1 to v2: Added AMD GPU to hmm_update removal. Added 2 patches from Christoph. Added 2 patches as

From: Jason Gunthorpe <jgg at mellanox.com> 8 of the mmu_notifier using drivers (i915_gem, radeon_mn, umem_odp, hfi1, scif_dma, vhost, gntdev, hmm) drivers are using a common pattern where they only use invalidate_range_start/end and immediately check the invalidating range against some driver data structure to tell if the driver is interested. Half of them use an interval_tree, the others

From: Jason Gunthorpe <jgg at mellanox.com> 8 of the mmu_notifier using drivers (i915_gem, radeon_mn, umem_odp, hfi1, scif_dma, vhost, gntdev, hmm) drivers are using a common pattern where they only use invalidate_range_start/end and immediately check the invalidating range against some driver data structure to tell if the driver is interested. Half of them use an interval_tree, the others