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 {