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Message-Id: <20230425-hugepage-migrate-v8-1-7868d54eaa27@intel.com>
Date: Wed, 26 Apr 2023 23:28:48 +0200
From: Andrzej Hajda <andrzej.hajda@...el.com>
To: intel-gfx@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
Jonathan Cavitt <jonathan.cavitt@...el.com>,
Andrzej Hajda <andrzej.hajda@...el.com>,
Matthew Auld <matthew.auld@...el.com>
Subject: [PATCH v8 1/2] drm/i915: Migrate platform-dependent mock hugepage
selftests to live
From: Jonathan Cavitt <jonathan.cavitt@...el.com>
Convert the igt_mock_ppgtt_huge_fill and igt_mock_ppgtt_64K mock selftests
into live selftests as their requirements have recently become
platform-dependent. Additionally, apply necessary platform dependency
checks to these tests.
v8:
- handle properly 64K and 2M pages
v9:
- do not expect 64K pages if 2M are present
- fix hex printing
- obey commit message line limit
Signed-off-by: Jonathan Cavitt <jonathan.cavitt@...el.com>
Co-developed-by: Andrzej Hajda <andrzej.hajda@...el.com>
Signed-off-by: Andrzej Hajda <andrzej.hajda@...el.com>
---
drivers/gpu/drm/i915/gem/selftests/huge_pages.c | 106 ++++++++++++++++++------
1 file changed, 81 insertions(+), 25 deletions(-)
diff --git a/drivers/gpu/drm/i915/gem/selftests/huge_pages.c b/drivers/gpu/drm/i915/gem/selftests/huge_pages.c
index defece0bcb811f..cb5863f37f9d37 100644
--- a/drivers/gpu/drm/i915/gem/selftests/huge_pages.c
+++ b/drivers/gpu/drm/i915/gem/selftests/huge_pages.c
@@ -695,8 +695,7 @@ static int igt_mock_ppgtt_misaligned_dma(void *arg)
return err;
}
-static void close_object_list(struct list_head *objects,
- struct i915_ppgtt *ppgtt)
+static void close_object_list(struct list_head *objects)
{
struct drm_i915_gem_object *obj, *on;
@@ -710,17 +709,36 @@ static void close_object_list(struct list_head *objects,
}
}
-static int igt_mock_ppgtt_huge_fill(void *arg)
+static int igt_ppgtt_huge_fill(void *arg)
{
- struct i915_ppgtt *ppgtt = arg;
- struct drm_i915_private *i915 = ppgtt->vm.i915;
- unsigned long max_pages = ppgtt->vm.total >> PAGE_SHIFT;
+ struct drm_i915_private *i915 = arg;
+ unsigned int supported = RUNTIME_INFO(i915)->page_sizes;
+ bool has_pte64 = GRAPHICS_VER_FULL(i915) >= IP_VER(12, 50);
+ struct i915_address_space *vm;
+ struct i915_gem_context *ctx;
+ unsigned long max_pages;
unsigned long page_num;
+ struct file *file;
bool single = false;
LIST_HEAD(objects);
IGT_TIMEOUT(end_time);
int err = -ENODEV;
+ if (supported == I915_GTT_PAGE_SIZE_4K)
+ return 0;
+
+ file = mock_file(i915);
+ if (IS_ERR(file))
+ return PTR_ERR(file);
+
+ ctx = hugepage_ctx(i915, file);
+ if (IS_ERR(ctx)) {
+ err = PTR_ERR(ctx);
+ goto out;
+ }
+ vm = i915_gem_context_get_eb_vm(ctx);
+ max_pages = vm->total >> PAGE_SHIFT;
+
for_each_prime_number_from(page_num, 1, max_pages) {
struct drm_i915_gem_object *obj;
u64 size = page_num << PAGE_SHIFT;
@@ -750,13 +768,14 @@ static int igt_mock_ppgtt_huge_fill(void *arg)
list_add(&obj->st_link, &objects);
- vma = i915_vma_instance(obj, &ppgtt->vm, NULL);
+ vma = i915_vma_instance(obj, vm, NULL);
if (IS_ERR(vma)) {
err = PTR_ERR(vma);
break;
}
- err = i915_vma_pin(vma, 0, 0, PIN_USER);
+ /* vma start must be aligned to BIT(21) to allow 2M PTEs */
+ err = i915_vma_pin(vma, 0, BIT(21), PIN_USER);
if (err)
break;
@@ -784,12 +803,13 @@ static int igt_mock_ppgtt_huge_fill(void *arg)
GEM_BUG_ON(!expected_gtt);
GEM_BUG_ON(size);
- if (expected_gtt & I915_GTT_PAGE_SIZE_4K)
+ if (!has_pte64 && (obj->base.size < I915_GTT_PAGE_SIZE_2M ||
+ expected_gtt & I915_GTT_PAGE_SIZE_2M))
expected_gtt &= ~I915_GTT_PAGE_SIZE_64K;
i915_vma_unpin(vma);
- if (vma->page_sizes.sg & I915_GTT_PAGE_SIZE_64K) {
+ if (!has_pte64 && vma->page_sizes.sg & I915_GTT_PAGE_SIZE_64K) {
if (!IS_ALIGNED(vma->node.start,
I915_GTT_PAGE_SIZE_2M)) {
pr_err("node.start(%llx) not aligned to 2M\n",
@@ -808,7 +828,7 @@ static int igt_mock_ppgtt_huge_fill(void *arg)
}
if (vma->resource->page_sizes_gtt != expected_gtt) {
- pr_err("gtt=%u, expected=%u, size=%zd, single=%s\n",
+ pr_err("gtt=%#x, expected=%#x, size=0x%zx, single=%s\n",
vma->resource->page_sizes_gtt, expected_gtt,
obj->base.size, str_yes_no(!!single));
err = -EINVAL;
@@ -823,19 +843,25 @@ static int igt_mock_ppgtt_huge_fill(void *arg)
single = !single;
}
- close_object_list(&objects, ppgtt);
+ close_object_list(&objects);
if (err == -ENOMEM || err == -ENOSPC)
err = 0;
+ i915_vm_put(vm);
+out:
+ fput(file);
return err;
}
-static int igt_mock_ppgtt_64K(void *arg)
+static int igt_ppgtt_64K(void *arg)
{
- struct i915_ppgtt *ppgtt = arg;
- struct drm_i915_private *i915 = ppgtt->vm.i915;
+ struct drm_i915_private *i915 = arg;
+ bool has_pte64 = GRAPHICS_VER_FULL(i915) >= IP_VER(12, 50);
struct drm_i915_gem_object *obj;
+ struct i915_address_space *vm;
+ struct i915_gem_context *ctx;
+ struct file *file;
const struct object_info {
unsigned int size;
unsigned int gtt;
@@ -907,16 +933,41 @@ static int igt_mock_ppgtt_64K(void *arg)
if (!HAS_PAGE_SIZES(i915, I915_GTT_PAGE_SIZE_64K))
return 0;
+ file = mock_file(i915);
+ if (IS_ERR(file))
+ return PTR_ERR(file);
+
+ ctx = hugepage_ctx(i915, file);
+ if (IS_ERR(ctx)) {
+ err = PTR_ERR(ctx);
+ goto out;
+ }
+ vm = i915_gem_context_get_eb_vm(ctx);
+
for (i = 0; i < ARRAY_SIZE(objects); ++i) {
unsigned int size = objects[i].size;
unsigned int expected_gtt = objects[i].gtt;
unsigned int offset = objects[i].offset;
unsigned int flags = PIN_USER;
+ /*
+ * For modern GTT models, the requirements for marking a page-table
+ * as 64K have been relaxed. Account for this.
+ */
+ if (has_pte64) {
+ expected_gtt = 0;
+ if (size >= SZ_64K)
+ expected_gtt |= I915_GTT_PAGE_SIZE_64K;
+ if (size & (SZ_64K - 1))
+ expected_gtt |= I915_GTT_PAGE_SIZE_4K;
+ }
+
for (single = 0; single <= 1; single++) {
obj = fake_huge_pages_object(i915, size, !!single);
- if (IS_ERR(obj))
- return PTR_ERR(obj);
+ if (IS_ERR(obj)) {
+ err = PTR_ERR(obj);
+ goto out_vm;
+ }
err = i915_gem_object_pin_pages_unlocked(obj);
if (err)
@@ -928,7 +979,7 @@ static int igt_mock_ppgtt_64K(void *arg)
*/
obj->mm.page_sizes.sg &= ~I915_GTT_PAGE_SIZE_2M;
- vma = i915_vma_instance(obj, &ppgtt->vm, NULL);
+ vma = i915_vma_instance(obj, vm, NULL);
if (IS_ERR(vma)) {
err = PTR_ERR(vma);
goto out_object_unpin;
@@ -945,7 +996,8 @@ static int igt_mock_ppgtt_64K(void *arg)
if (err)
goto out_vma_unpin;
- if (!offset && vma->page_sizes.sg & I915_GTT_PAGE_SIZE_64K) {
+ if (!has_pte64 && !offset &&
+ vma->page_sizes.sg & I915_GTT_PAGE_SIZE_64K) {
if (!IS_ALIGNED(vma->node.start,
I915_GTT_PAGE_SIZE_2M)) {
pr_err("node.start(%llx) not aligned to 2M\n",
@@ -964,9 +1016,10 @@ static int igt_mock_ppgtt_64K(void *arg)
}
if (vma->resource->page_sizes_gtt != expected_gtt) {
- pr_err("gtt=%u, expected=%u, i=%d, single=%s\n",
+ pr_err("gtt=%#x, expected=%#x, i=%d, single=%s offset=%#x size=%#x\n",
vma->resource->page_sizes_gtt,
- expected_gtt, i, str_yes_no(!!single));
+ expected_gtt, i, str_yes_no(!!single),
+ offset, size);
err = -EINVAL;
goto out_vma_unpin;
}
@@ -982,7 +1035,7 @@ static int igt_mock_ppgtt_64K(void *arg)
}
}
- return 0;
+ goto out_vm;
out_vma_unpin:
i915_vma_unpin(vma);
@@ -992,7 +1045,10 @@ static int igt_mock_ppgtt_64K(void *arg)
i915_gem_object_unlock(obj);
out_object_put:
i915_gem_object_put(obj);
-
+out_vm:
+ i915_vm_put(vm);
+out:
+ fput(file);
return err;
}
@@ -1910,8 +1966,6 @@ int i915_gem_huge_page_mock_selftests(void)
SUBTEST(igt_mock_exhaust_device_supported_pages),
SUBTEST(igt_mock_memory_region_huge_pages),
SUBTEST(igt_mock_ppgtt_misaligned_dma),
- SUBTEST(igt_mock_ppgtt_huge_fill),
- SUBTEST(igt_mock_ppgtt_64K),
};
struct drm_i915_private *dev_priv;
struct i915_ppgtt *ppgtt;
@@ -1962,6 +2016,8 @@ int i915_gem_huge_page_live_selftests(struct drm_i915_private *i915)
SUBTEST(igt_ppgtt_sanity_check),
SUBTEST(igt_ppgtt_compact),
SUBTEST(igt_ppgtt_mixed),
+ SUBTEST(igt_ppgtt_huge_fill),
+ SUBTEST(igt_ppgtt_64K),
};
if (!HAS_PPGTT(i915)) {
--
2.34.1
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