If the memory is going to be accessed by the device, make sure we mark
the pages accordingly such that the kernel knows this. This aligns with
the xe-userptr code.
Signed-off-by: Matthew Auld <matthew.a...@intel.com>
Cc: Thomas Hellström <thomas.hellst...@linux.intel.com>
Cc: Matthew Brost <matthew.br...@intel.com>
---
drivers/gpu/drm/drm_gpusvm.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/drivers/gpu/drm/drm_gpusvm.c b/drivers/gpu/drm/drm_gpusvm.c
index 7f1cf5492bba..5b4ecd36dff1 100644
--- a/drivers/gpu/drm/drm_gpusvm.c
+++ b/drivers/gpu/drm/drm_gpusvm.c
@@ -1471,6 +1471,7 @@ int drm_gpusvm_range_get_pages(struct drm_gpusvm *gpusvm,
pages[i] = page;
} else {
dma_addr_t addr;
+ unsigned int k;
if (is_zone_device_page(page) || zdd) {
err = -EOPNOTSUPP;
@@ -1489,6 +1490,14 @@ int drm_gpusvm_range_get_pages(struct drm_gpusvm *gpusvm,
range->dma_addr[j] = drm_pagemap_device_addr_encode
(addr, DRM_INTERCONNECT_SYSTEM, order,
dma_dir);
+
+ for (k = 0; k < 1u << order; k++) {
+ if (!ctx->read_only)
+ set_page_dirty_lock(page);
+
+ mark_page_accessed(page);
+ page++;
+ }
}
i += 1 << order;
num_dma_mapped = i;
--
2.48.1
