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drm/i915/selftests: Ensure we don't clamp a random offset to 32b

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Specify that we do want a 64b value for sizeof(u32) as we want to
compute the mask of the upper 62bits.

v2: Use round_down() for automatic type promotion

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190710161413.7115-1-chris@chris-wilson.co.uk
This commit is contained in:
Chris Wilson 2019-07-10 17:14:13 +01:00
parent 47c4bdd6d3
commit bf1315b830
2 changed files with 8 additions and 1 deletions
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2
drivers/gpu/drm/i915/gem/selftests/i915_gem_context.c
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@ -1539,7 +1539,7 @@ static int igt_vm_isolation(void *arg)
div64_u64_rem(i915_prandom_u64_state(&prng),
vm_total, &offset);
offset &= -sizeof(u32);
offset = round_down(offset, alignof_dword);
offset += I915_GTT_PAGE_SIZE;
err = write_to_scratch(ctx_a, engine,

7
drivers/gpu/drm/i915/gt/intel_gpu_commands.h
View File

@ -7,6 +7,13 @@
#ifndef _INTEL_GPU_COMMANDS_H_
#define _INTEL_GPU_COMMANDS_H_
/*
* Target address alignments required for GPU access e.g.
* MI_STORE_DWORD_IMM.
*/
#define alignof_dword 4
#define alignof_qword 8
/*
* Instruction field definitions used by the command parser
*/