[Intel-gfx] [PATCH 09/20] drm/i915/buddy: tweak 2big check

Matthew Auld
2022-01-26T15:22:56Z

Otherwise we get -EINVAL, instead of the more useful -E2BIG if the
allocation doesn't fit within the pfn range, like with mappable lmem.
The hugepages selftest, for example, needs this to know if a smaller
size is needed.

Signed-off-by: Matthew Auld <matthew.auld@intel.com>
Cc: Thomas Hellström <thomas.hellstrom@linux.intel.com>
---
drivers/gpu/drm/i915/i915_ttm_buddy_manager.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/i915_ttm_buddy_manager.c b/drivers/gpu/drm/i915/i915_ttm_buddy_manager.c
index bc725a92fc5c..7c24cc6608e3 100644
--- a/drivers/gpu/drm/i915/i915_ttm_buddy_manager.c
+++ b/drivers/gpu/drm/i915/i915_ttm_buddy_manager.c
@@ -81,7 +81,7 @@ static int i915_ttm_buddy_man_alloc(struct ttm_resource_manager *man,
lpfn = pages;
}

- if (size > mm->size) {
+ if (size > lpfn << PAGE_SHIFT) {
err = -E2BIG;
goto err_free_res;
}
--
2.34.1