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ac/gpu_info: add has_zerovram_support

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AMDGPU 3.59.0+ clears VRAM on allocations.

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/34896>
This commit is contained in:
Samuel Pitoiset 2025-04-03 14:33:17 +02:00 • committed by Marge Bot
parent 2f2a5d31bd
commit 4b16de5e0d
2 changed files with 4 additions and 0 deletions
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3
src/amd/common/ac_gpu_info.c
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@ -1446,6 +1446,8 @@ ac_query_gpu_info(int fd, void *dev_p, struct radeon_info *info,
info->has_stable_pstate = info->drm_minor >= 45;
info->has_zerovram_support = info->drm_minor >= 59;
if (info->gfx_level >= GFX12) {
/* Gfx12 doesn't use pc_lines and pbb_max_alloc_count. */
} else if (info->gfx_level >= GFX11) {
@ -2096,6 +2098,7 @@ void ac_print_gpu_info(const struct radeon_info *info, FILE *f)
info->fw_based_mcbp.csa_alignment);
}
fprintf(f, " has_zerovram_support = %u\n", info->has_zerovram_support);
fprintf(f, " has_tmz_support = %u\n", info->has_tmz_support);
fprintf(f, " has_trap_handler_support = %u\n", info->has_trap_handler_support);
for (unsigned i = 0; i < AMD_NUM_IP_TYPES; i++) {

1
src/amd/common/ac_gpu_info.h
View file

@ -241,6 +241,7 @@ struct radeon_info {
bool has_stable_pstate;
/* Whether SR-IOV is enabled or amdgpu.mcbp=1 was set on the kernel command line. */
bool register_shadowing_required;
bool has_zerovram_support;
bool has_tmz_support;
bool has_trap_handler_support;
bool kernel_has_modifiers;