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Date: Tue, 12 Oct 2021 12:12:42 -0500 From: Alex Sierra <alex.sierra@....com> To: <akpm@...ux-foundation.org>, <Felix.Kuehling@....com>, <linux-mm@...ck.org>, <rcampbell@...dia.com>, <linux-ext4@...r.kernel.org>, <linux-xfs@...r.kernel.org> CC: <amd-gfx@...ts.freedesktop.org>, <dri-devel@...ts.freedesktop.org>, <hch@....de>, <jgg@...dia.com>, <jglisse@...hat.com>, <apopple@...dia.com> Subject: [PATCH v1 07/12] drm/amdkfd: coherent type as sys mem on migration to ram Coherent device type memory on VRAM to RAM migration, has similar access as System RAM from the CPU. This flag sets the source from the sender. Which in Coherent type case, should be set as MIGRATE_VMA_SELECT_DEVICE_COHERENT. Signed-off-by: Alex Sierra <alex.sierra@....com> Reviewed-by: Felix Kuehling <Felix.Kuehling@....com> --- drivers/gpu/drm/amd/amdkfd/kfd_migrate.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_migrate.c b/drivers/gpu/drm/amd/amdkfd/kfd_migrate.c index 9efc97d55077..4ec7ac13f2b7 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_migrate.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_migrate.c @@ -617,9 +617,12 @@ svm_migrate_vma_to_ram(struct amdgpu_device *adev, struct svm_range *prange, migrate.vma = vma; migrate.start = start; migrate.end = end; - migrate.flags = MIGRATE_VMA_SELECT_DEVICE_PRIVATE; migrate.pgmap_owner = SVM_ADEV_PGMAP_OWNER(adev); + if (adev->gmc.xgmi.connected_to_cpu) + migrate.flags = MIGRATE_VMA_SELECT_DEVICE_COHERENT; + else + migrate.flags = MIGRATE_VMA_SELECT_DEVICE_PRIVATE; size = 2 * sizeof(*migrate.src) + sizeof(uint64_t) + sizeof(dma_addr_t); size *= npages; buf = kvmalloc(size, GFP_KERNEL | __GFP_ZERO); -- 2.32.0
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