From 6e0c5bf0cc1369df0057bccb3fc1af3b38d07e32 Mon Sep 17 00:00:00 2001
From: Matthew Auld <matthew.auld@intel.com>
Date: Mon, 28 Feb 2022 12:36:06 +0000
Subject: [PATCH] drm/i915/selftests: handle allocation failures
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
If we have to contend with non-mappable LMEM, then we need to ensure the
object fits within the mappable portion, like in the selftests, where we
later try to CPU access the pages. However if it can't then we need to
gracefully handle this, without throwing an error.
Also it looks like TTM will return -ENOMEM, in ttm_bo_mem_space() after
exhausting all possible placements.
Signed-off-by: Matthew Auld <matthew.auld@intel.com>
Cc: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Reviewed-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Acked-by: Nirmoy Das <nirmoy.das@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220228123607.580432-3-matthew.auld@intel.com
---
drivers/gpu/drm/i915/gem/selftests/huge_pages.c | 2 +-
drivers/gpu/drm/i915/selftests/intel_memory_region.c | 8 +++++++-
2 files changed, 8 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/i915/gem/selftests/huge_pages.c b/drivers/gpu/drm/i915/gem/selftests/huge_pages.c
index dbbae53f820a7..7a84fa68a99ca 100644
--- a/drivers/gpu/drm/i915/gem/selftests/huge_pages.c
+++ b/drivers/gpu/drm/i915/gem/selftests/huge_pages.c
@@ -1345,7 +1345,7 @@ static int igt_ppgtt_smoke_huge(void *arg)
err = i915_gem_object_pin_pages_unlocked(obj);
if (err) {
- if (err == -ENXIO || err == -E2BIG) {
+ if (err == -ENXIO || err == -E2BIG || err == -ENOMEM) {
i915_gem_object_put(obj);
size >>= 1;
goto try_again;
diff --git a/drivers/gpu/drm/i915/selftests/intel_memory_region.c b/drivers/gpu/drm/i915/selftests/intel_memory_region.c
index 56dec9723601a..ba32893e0873c 100644
--- a/drivers/gpu/drm/i915/selftests/intel_memory_region.c
+++ b/drivers/gpu/drm/i915/selftests/intel_memory_region.c
@@ -822,8 +822,14 @@ static int igt_lmem_create_with_ps(void *arg)
i915_gem_object_lock(obj, NULL);
err = i915_gem_object_pin_pages(obj);
- if (err)
+ if (err) {
+ if (err == -ENXIO || err == -E2BIG || err == -ENOMEM) {
+ pr_info("%s not enough lmem for ps(%u) err=%d\n",
+ __func__, ps, err);
+ err = 0;
+ }
goto out_put;
+ }
daddr = i915_gem_object_get_dma_address(obj, 0);
if (!IS_ALIGNED(daddr, ps)) {
--
GitLab