f47e6306af
We need to check that we avoid integer overflows when looking up a page,
and so fix all the instances where we have mistakenly used a plain
integer instead of a more suitable long. Be pedantic and add integer
typechecking to the lookup so that we can be sure that we are safe.
And it also uses pgoff_t as our page lookups must remain compatible with
the page cache, pgoff_t is currently exactly unsigned long.
v2: Move added i915_utils's macro into drm_util header (Jani N)
v3: Make not use the same macro name on a function. (Mauro)
For kernel-doc, macros and functions are handled in the same namespace,
the same macro name on a function prevents ever adding documentation
for it.
v4: Add kernel-doc markups to the kAPI functions and macros (Mauoro)
v5: Fix an alignment to match open parenthesis
v6: Rebase
v10: Use assert_typable instead of exactly_pgoff_t() macro. (Kees)
v11: Change the use of assert_typable to assert_same_typable (G.G)
v12: Change to use static_assert(__castable_to_type(n ,T)) style since
the assert_same_typable() macro has been dropped. (G.G)
v13: Change the use of __castable_to_type() to castable_to_type()
Remove an unnecessary header include line. (G.G)
v16: Fix "ERROR:SPACING" Checkpatch report (G.G)
Cc: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>
Cc: Matthew Auld <matthew.auld@intel.com>
Cc: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Cc: Kees Cook <keescook@chromium.org>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Co-developed-by: Gwan-gyeong Mun <gwan-gyeong.mun@intel.com>
Signed-off-by: Gwan-gyeong Mun <gwan-gyeong.mun@intel.com>
Reviewed-by: Nirmoy Das <nirmoy.das@intel.com> (v2)
Reviewed-by: Mauro Carvalho Chehab <mchehab@kernel.org> (v3)
Reviewed-by: Andrzej Hajda <andrzej.hajda@intel.com> (v5)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221228192252.917299-2-gwan-gyeong.mun@intel.com
99 lines
2 KiB
C
99 lines
2 KiB
C
/*
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* SPDX-License-Identifier: MIT
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*
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* Copyright © 2016 Intel Corporation
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*/
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#include "i915_selftest.h"
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#include "huge_gem_object.h"
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#include "selftests/igt_flush_test.h"
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#include "selftests/mock_gem_device.h"
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static int igt_gem_object(void *arg)
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{
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struct drm_i915_private *i915 = arg;
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struct drm_i915_gem_object *obj;
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int err;
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/* Basic test to ensure we can create an object */
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obj = i915_gem_object_create_shmem(i915, PAGE_SIZE);
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if (IS_ERR(obj)) {
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err = PTR_ERR(obj);
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pr_err("i915_gem_object_create failed, err=%d\n", err);
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goto out;
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}
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err = 0;
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i915_gem_object_put(obj);
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out:
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return err;
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}
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static int igt_gem_huge(void *arg)
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{
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const unsigned long nreal = 509; /* just to be awkward */
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struct drm_i915_private *i915 = arg;
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struct drm_i915_gem_object *obj;
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unsigned long n;
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int err;
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/* Basic sanitycheck of our huge fake object allocation */
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obj = huge_gem_object(i915,
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nreal * PAGE_SIZE,
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to_gt(i915)->ggtt->vm.total + PAGE_SIZE);
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if (IS_ERR(obj))
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return PTR_ERR(obj);
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err = i915_gem_object_pin_pages_unlocked(obj);
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if (err) {
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pr_err("Failed to allocate %lu pages (%lu total), err=%d\n",
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nreal, obj->base.size / PAGE_SIZE, err);
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goto out;
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}
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for (n = 0; n < obj->base.size / PAGE_SIZE; n++) {
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if (i915_gem_object_get_page(obj, n) !=
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i915_gem_object_get_page(obj, n % nreal)) {
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pr_err("Page lookup mismatch at index %lu [%lu]\n",
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n, n % nreal);
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err = -EINVAL;
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goto out_unpin;
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}
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}
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out_unpin:
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i915_gem_object_unpin_pages(obj);
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out:
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i915_gem_object_put(obj);
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return err;
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}
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int i915_gem_object_mock_selftests(void)
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{
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static const struct i915_subtest tests[] = {
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SUBTEST(igt_gem_object),
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};
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struct drm_i915_private *i915;
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int err;
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i915 = mock_gem_device();
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if (!i915)
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return -ENOMEM;
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err = i915_subtests(tests, i915);
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mock_destroy_device(i915);
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return err;
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}
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int i915_gem_object_live_selftests(struct drm_i915_private *i915)
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{
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static const struct i915_subtest tests[] = {
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SUBTEST(igt_gem_huge),
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};
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return i915_live_subtests(tests, i915);
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}
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