linux-ext4 - [PATCH v4 05/13] drm/amdkfd: generic type as sys mem on migration to ram

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Message-Id: <20210717192135.9030-6-alex.sierra@amd.com>
Date:   Sat, 17 Jul 2021 14:21:27 -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
Subject: [PATCH v4 05/13] drm/amdkfd: generic type as sys mem on migration to ram

Generic 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 Generic type case,
should be set as SYSTEM.

Signed-off-by: Alex Sierra <alex.sierra@....com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@....com>
---
 drivers/gpu/drm/amd/amdkfd/kfd_migrate.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_migrate.c b/drivers/gpu/drm/amd/amdkfd/kfd_migrate.c
index 3e9315354ce4..fc491bfc09f4 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_migrate.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_migrate.c
@@ -664,8 +664,9 @@ 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);
+	migrate.flags = adev->gmc.xgmi.connected_to_cpu ?
+			MIGRATE_VMA_SELECT_SYSTEM : MIGRATE_VMA_SELECT_DEVICE_PRIVATE;
 
 	size = 2 * sizeof(*migrate.src) + sizeof(uint64_t) + sizeof(dma_addr_t);
 	size *= npages;
-- 
2.32.0