search for: nouveau_pfns_map

This addresses the following gcc warning with "make W=1": drivers/gpu/drm/nouveau/nouveau_svm.c: In function ?nouveau_pfns_map?: drivers/gpu/drm/nouveau/nouveau_svm.c:818:6: warning: variable ?ret? set but not used [-Wunused-but-set-variable] 818 | int ret; | ^~~ Reported-by: Hulk Robot <hulkci at huawei.com> Signed-off-by: Jason Yan <yanaijie at huawei.com> --- drivers/gpu/drm/nouveau/nouveau_s...

...+ + kfree(args); +} + +static struct nouveau_svmm * +nouveau_find_svmm(struct nouveau_svm *svm, struct mm_struct *mm) +{ + struct nouveau_ivmm *ivmm; + + list_for_each_entry(ivmm, &svm->inst, head) { + if (ivmm->svmm->mm == mm) + return ivmm->svmm; + } + return NULL; +} + +void +nouveau_pfns_map(struct nouveau_drm *drm, struct mm_struct *mm, + unsigned long addr, u64 *pfns, unsigned long npages) +{ + struct nouveau_svm *svm = drm->svm; + struct nouveau_svmm *svmm; + struct nouveau_pfnmap_args *args; + int ret; + + if (!svm) + return; + + mutex_lock(&svm->mutex); + svmm = nouve...

...5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/nouveau/nouveau_svm.c b/drivers/gpu/drm/nouveau/nouveau_svm.c index a74ba8d84ba7..e072d610f2f9 100644 --- a/drivers/gpu/drm/nouveau/nouveau_svm.c +++ b/drivers/gpu/drm/nouveau/nouveau_svm.c @@ -926,15 +926,14 @@ nouveau_pfns_map(struct nouveau_svmm *svmm, struct mm_struct *mm, unsigned long addr, u64 *pfns, unsigned long npages) { struct nouveau_pfnmap_args *args = nouveau_pfns_to_args(pfns); - int ret; args->p.addr = addr; args->p.size = npages << PAGE_SHIFT; mutex_lock(&svmm->mutex);...

...riable ?ret? set but not used [-Wunused-but-set-variable] drivers/gpu/drm/nouveau/dispnv50/disp.c: In function nv50_mstm_prepare: drivers/gpu/drm/nouveau/dispnv50/disp.c:1327:6: warning: variable ?ret? set but not used [-Wunused-but-set-variable] drivers/gpu/drm/nouveau/nouveau_svm.c: In function nouveau_pfns_map: drivers/gpu/drm/nouveau/nouveau_svm.c:818:6: warning: variable ?ret? set but not used [-Wunused-but-set-variable] these variable is never used, so remove it. Signed-off-by: Zheng Yongjun <zhengyongjun3 at huawei.com> --- drivers/gpu/drm/nouveau/dispnv50/disp.c | 9 +++------ drivers/gpu/d...

...<rcampbell at nvidia.com> > Cc: Christoph Hellwig <hch at lst.de> > Cc: Jason Gunthorpe <jgg at mellanox.com> > Cc: "Jérôme Glisse" <jglisse at redhat.com> > Cc: Ben Skeggs <bskeggs at redhat.com> Sorry for delay i am swamp, couple issues: - nouveau_pfns_map() is never call, it should be call after the dma copy is done (iirc it is lacking proper fencing so that would need to be implemented first) - the migrate ioctl is disconnected from the svm part and thus we would need first to implement svm reference counting and take a...

...oid nouveau_dmem_migrate_chunk(struct nouveau_drm *drm, } if (!nouveau_fence_new(&fence)) - nouveau_fence_emit(fence, chunk->drm->dmem->migrate.chan); + nouveau_fence_emit(fence, drm->dmem->migrate.chan); migrate_vma_pages(args); nouveau_dmem_fence_done(&fence); nouveau_pfns_map(svmm, args->vma->vm_mm, args->start, pfns, i); base-commit: 82d750e9d2f5d0594c8f7057ce59127e701af781 -- 2.41.0

...ma, pfns + i); if (args->dst[i]) nr_dma++; addr += PAGE_SIZE; @@ -607,15 +615,12 @@ static void nouveau_dmem_migrate_chunk(struct nouveau_drm *drm, nouveau_fence_new(drm->dmem->migrate.chan, false, &fence); migrate_vma_pages(args); nouveau_dmem_fence_done(&fence); + nouveau_pfns_map(drm, args->vma->vm_mm, args->start, pfns, i); while (nr_dma--) { dma_unmap_page(drm->dev->dev, dma_addrs[nr_dma], PAGE_SIZE, DMA_BIDIRECTIONAL); } - /* - * FIXME optimization: update GPU page table to point to newly migrated - * memory. - */ migrate_vma_finalize(ar...

Originally patch 4 was targeted for Jason's rdma tree since other HMM related changes were queued there. Now that those have been merged, these patches just contain changes to nouveau so they could go through any tree. I guess Ben Skeggs' tree would be appropriate. Changes since v2: Added patches 1-3 to fix some minor issues. Eliminated nouveau_find_svmm() since it is easily found.

...der >> NOUVEAU_SVM_BIND_PRIORITY_SHIFT; - priority &= NOUVEAU_SVM_BIND_PRIORITY_MASK; - /* FIXME support CPU target ie all target value < GPU_VRAM */ target = args->header >> NOUVEAU_SVM_BIND_TARGET_SHIFT; target &= NOUVEAU_SVM_BIND_TARGET_MASK; @@ -926,15 +923,14 @@ nouveau_pfns_map(struct nouveau_svmm *svmm, struct mm_struct *mm, unsigned long addr, u64 *pfns, unsigned long npages) { struct nouveau_pfnmap_args *args = nouveau_pfns_to_args(pfns); - int ret; args->p.addr = addr; args->p.size = npages << PAGE_SHIFT; mutex_lock(&svmm->mutex);...

...,5 +49,19 @@ static inline int nouveau_svmm_bind(struct drm_device *device, void *p, > { > return -ENOSYS; > } > + > +u64 *nouveau_pfns_alloc(unsigned long npages) > +{ > + return NULL; > +} > + > +void nouveau_pfns_free(u64 *pfns) > +{ > +} > + > +void nouveau_pfns_map(struct nouveau_drm *drm, struct mm_struct *mm, > + unsigned long addr, u64 *pfns, unsigned long npages) > +{ > +} > #endif /* IS_ENABLED(CONFIG_DRM_NOUVEAU_SVM) */ nouveau_dmem.c and nouveau_svm.c are both built conditional on CONFIG_DRM_NOUVEAU_SVM, so there is no need for stu...

...oid nouveau_svmm_part(struct nouveau_svmm *, u64 inst); int nouveau_svmm_bind(struct drm_device *, void *, struct drm_file *); +void nouveau_svmm_invalidate(struct nouveau_svmm *svmm, u64 start, u64 limit); u64 *nouveau_pfns_alloc(unsigned long npages); void nouveau_pfns_free(u64 *pfns); void nouveau_pfns_map(struct nouveau_svmm *svmm, struct mm_struct *mm, -- 2.20.1

...m_migrate_chunk(struct nouveau_drm *drm, addr += PAGE_SIZE; } - if (!nouveau_fence_new(&fence)) - nouveau_fence_emit(fence, drm->dmem->migrate.chan); + nouveau_fence_new(&fence, drm->dmem->migrate.chan); migrate_vma_pages(args); nouveau_dmem_fence_done(&fence); nouveau_pfns_map(svmm, args->vma->vm_mm, args->start, pfns, i); diff --git a/drivers/gpu/drm/nouveau/nouveau_exec.c b/drivers/gpu/drm/nouveau/nouveau_exec.c index 98a7a94cec5a..72f6543a0790 100644 --- a/drivers/gpu/drm/nouveau/nouveau_exec.c +++ b/drivers/gpu/drm/nouveau/nouveau_exec.c @@ -91,7 +91,8 @@ no...

..._device *device, void *p, >> { >> return -ENOSYS; >> } >> + >> +u64 *nouveau_pfns_alloc(unsigned long npages) >> +{ >> + return NULL; >> +} >> + >> +void nouveau_pfns_free(u64 *pfns) >> +{ >> +} >> + >> +void nouveau_pfns_map(struct nouveau_drm *drm, struct mm_struct *mm, >> + unsigned long addr, u64 *pfns, unsigned long npages) >> +{ >> +} >> #endif /* IS_ENABLED(CONFIG_DRM_NOUVEAU_SVM) */ > > nouveau_dmem.c and nouveau_svm.c are both built conditional on > CONFIG_DRM_NOUVEAU_...

hmm_range_fault() returns an array of page frame numbers and flags for how the pages are mapped in the requested process' page tables. The PFN can be used to get the struct page with hmm_pfn_to_page() and the page size order can be determined with compound_order(page) but if the page is larger than order 0 (PAGE_SIZE), there is no indication that the page is mapped using a larger page size. To

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

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

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