From: Ralph Campbell <rcampbell@nvidia.com> To: <nouveau@lists.freedesktop.org>, <linux-rdma@vger.kernel.org>, <linux-mm@kvack.org>, <linux-kselftest@vger.kernel.org>, <linux-kernel@vger.kernel.org> Cc: Jerome Glisse <jglisse@redhat.com>, John Hubbard <jhubbard@nvidia.com>, Christoph Hellwig <hch@lst.de>, Jason Gunthorpe <jgg@mellanox.com>, "Ben Skeggs" <bskeggs@redhat.com>, Andrew Morton <akpm@linux-foundation.org>, Shuah Khan <shuah@kernel.org>, Ralph Campbell <rcampbell@nvidia.com> Subject: [PATCH 02/16] nouveau: fix migrate page regression Date: Fri, 19 Jun 2020 14:56:35 -0700 [thread overview] Message-ID: <20200619215649.32297-3-rcampbell@nvidia.com> (raw) In-Reply-To: <20200619215649.32297-1-rcampbell@nvidia.com> The patch to add zero page migration to GPU memory inadvertantly included part of a future change which broke normal page migration to GPU memory by copying too much data and corrupting GPU memory. Fix this by only copying one page instead of a byte count. Fixes: 9d4296a7d4b3 ("drm/nouveau/nouveau/hmm: fix migrate zero page to GPU") Signed-off-by: Ralph Campbell <rcampbell@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; - if (drm->dmem->migrate.copy_func(drm, page_size(spage), + if (drm->dmem->migrate.copy_func(drm, 1, NOUVEAU_APER_VRAM, paddr, NOUVEAU_APER_HOST, *dma_addr)) goto out_dma_unmap; } else { -- 2.20.1
WARNING: multiple messages have this Message-ID (diff)
From: Ralph Campbell <rcampbell-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org> To: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org, linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-mm-Bw31MaZKKs3YtjvyW6yDsg@public.gmane.org, linux-kselftest-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org Cc: Ralph Campbell <rcampbell-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>, Jason Gunthorpe <jgg-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>, Ben Skeggs <bskeggs-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>, Andrew Morton <akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>, Shuah Khan <shuah-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>, Christoph Hellwig <hch-jcswGhMUV9g@public.gmane.org> Subject: [PATCH 02/16] nouveau: fix migrate page regression Date: Fri, 19 Jun 2020 14:56:35 -0700 [thread overview] Message-ID: <20200619215649.32297-3-rcampbell@nvidia.com> (raw) In-Reply-To: <20200619215649.32297-1-rcampbell-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org> The patch to add zero page migration to GPU memory inadvertantly included part of a future change which broke normal page migration to GPU memory by copying too much data and corrupting GPU memory. Fix this by only copying one page instead of a byte count. Fixes: 9d4296a7d4b3 ("drm/nouveau/nouveau/hmm: fix migrate zero page to GPU") Signed-off-by: Ralph Campbell <rcampbell-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org> --- 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; - if (drm->dmem->migrate.copy_func(drm, page_size(spage), + if (drm->dmem->migrate.copy_func(drm, 1, NOUVEAU_APER_VRAM, paddr, NOUVEAU_APER_HOST, *dma_addr)) goto out_dma_unmap; } else { -- 2.20.1
next prev parent reply other threads:[~2020-06-19 21:59 UTC|newest] Thread overview: 79+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-06-19 21:56 [PATCH 00/16] mm/hmm/nouveau: THP mapping and migration Ralph Campbell 2020-06-19 21:56 ` Ralph Campbell 2020-06-19 21:56 ` [PATCH 01/16] mm: fix migrate_vma_setup() src_owner and normal pages Ralph Campbell 2020-06-19 21:56 ` Ralph Campbell 2020-06-19 21:56 ` Ralph Campbell [this message] 2020-06-19 21:56 ` [PATCH 02/16] nouveau: fix migrate page regression Ralph Campbell 2020-06-19 21:56 ` [PATCH 03/16] nouveau: fix mixed normal and device private page migration Ralph Campbell 2020-06-19 21:56 ` Ralph Campbell 2020-06-19 21:56 ` [PATCH 04/16] mm/hmm: fix test timeout on slower machines Ralph Campbell 2020-06-19 21:56 ` Ralph Campbell 2020-06-19 21:56 ` [PATCH 05/16] mm/hmm/test: remove redundant page table invalidate Ralph Campbell 2020-06-19 21:56 ` Ralph Campbell 2020-06-19 21:56 ` [PATCH 06/16] mm/hmm: test mixed normal and device private migrations Ralph Campbell 2020-06-19 21:56 ` Ralph Campbell 2020-06-19 21:56 ` [PATCH 07/16] nouveau: make nvkm_vmm_ctor() and nvkm_mmu_ptp_get() static Ralph Campbell 2020-06-19 21:56 ` Ralph Campbell 2020-06-19 21:56 ` [PATCH 08/16] nouveau/hmm: fault one page at a time Ralph Campbell 2020-06-19 21:56 ` Ralph Campbell 2020-06-22 17:22 ` Jason Gunthorpe 2020-06-22 17:22 ` Jason Gunthorpe 2020-06-22 18:44 ` Ralph Campbell 2020-06-22 18:44 ` Ralph Campbell 2020-06-19 21:56 ` [PATCH 09/16] mm/hmm: add output flag for compound page mapping Ralph Campbell 2020-06-19 21:56 ` Ralph Campbell 2020-06-22 17:25 ` Jason Gunthorpe 2020-06-22 17:25 ` Jason Gunthorpe 2020-06-22 18:10 ` Ralph Campbell 2020-06-22 18:10 ` Ralph Campbell 2020-06-22 23:18 ` Jason Gunthorpe 2020-06-22 23:18 ` Jason Gunthorpe 2020-06-22 23:26 ` Ralph Campbell 2020-06-22 23:26 ` Ralph Campbell 2020-06-19 21:56 ` [PATCH 10/16] nouveau/hmm: support mapping large sysmem pages Ralph Campbell 2020-06-19 21:56 ` Ralph Campbell 2020-06-19 21:56 ` [PATCH 11/16] hmm: add tests for HMM_PFN_COMPOUND flag Ralph Campbell 2020-06-19 21:56 ` Ralph Campbell 2020-06-19 21:56 ` [PATCH 12/16] mm/hmm: optimize migrate_vma_setup() for holes Ralph Campbell 2020-06-19 21:56 ` Ralph Campbell 2020-06-19 21:56 ` [PATCH 13/16] mm: support THP migration to device private memory Ralph Campbell 2020-06-19 21:56 ` Ralph Campbell 2020-06-21 23:20 ` Zi Yan 2020-06-21 23:20 ` Zi Yan 2020-06-22 19:36 ` Ralph Campbell 2020-06-22 19:36 ` Ralph Campbell 2020-06-22 20:10 ` Zi Yan 2020-06-22 20:10 ` Zi Yan 2020-06-22 21:31 ` Ralph Campbell 2020-06-22 21:31 ` Ralph Campbell 2020-06-22 21:53 ` Zi Yan 2020-06-22 21:53 ` Zi Yan 2020-06-22 22:30 ` Yang Shi 2020-06-22 22:30 ` Yang Shi 2020-06-22 22:33 ` Yang Shi 2020-06-22 22:33 ` Yang Shi 2020-06-22 22:33 ` Yang Shi 2020-06-22 23:01 ` John Hubbard 2020-06-22 23:01 ` John Hubbard 2020-06-22 23:54 ` Yang Shi 2020-06-22 23:54 ` Yang Shi 2020-06-22 23:54 ` Yang Shi 2020-06-23 0:05 ` Ralph Campbell 2020-06-23 0:05 ` Ralph Campbell 2020-06-23 2:51 ` Huang, Ying 2020-06-23 2:51 ` Huang, Ying 2020-06-23 2:51 ` Huang, Ying 2020-06-19 21:56 ` [PATCH 14/16] mm/thp: add THP allocation helper Ralph Campbell 2020-06-19 21:56 ` Ralph Campbell 2020-06-22 0:15 ` Zi Yan 2020-06-22 0:15 ` Zi Yan 2020-06-22 21:33 ` Ralph Campbell 2020-06-22 21:33 ` Ralph Campbell 2020-06-19 21:56 ` [PATCH 15/16] mm/hmm/test: add self tests for THP migration Ralph Campbell 2020-06-19 21:56 ` Ralph Campbell 2020-06-19 21:56 ` [PATCH 16/16] nouveau: support THP migration to private memory Ralph Campbell 2020-06-19 21:56 ` Ralph Campbell 2020-06-22 12:39 ` [PATCH 00/16] mm/hmm/nouveau: THP mapping and migration Jason Gunthorpe 2020-06-22 12:39 ` Jason Gunthorpe 2020-06-22 16:58 ` Ralph Campbell 2020-06-22 16:58 ` Ralph Campbell
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