From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 62B2BF45A1C for ; Tue, 14 Apr 2026 06:18:38 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 190F810E575; Tue, 14 Apr 2026 06:18:38 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="j0jos+gN"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.13]) by gabe.freedesktop.org (Postfix) with ESMTPS id AF5FB10E586 for ; Tue, 14 Apr 2026 06:17:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1776147452; x=1807683452; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=aUpm1C5uXAFq0NkY8VtPy2uwMvffTGeAwlpUCHBgBbQ=; b=j0jos+gNbmJh/P25NKkGfYyW76HqTvkfvRYkGfZskOIr0WbQmxrxrGSM iZNz/w/2bWfVRnxPmy7fKyi18FeMdlmol0cgYAb6X10FIIXX0DjFFSSCx mRsFS+oYAW3DJQgTkyJIhZ4rslL+UlTyOlvCwjBSiWtxZy977bpyUKrRG LOmH0L5ZojyBXP5ifb/PlTov+a9EjJNpqI4jmbvIvlC+3Kdg/9v9Mxms6 t0NkCUbSg9zvqBN5laSXV4l+gHlca5c9IlALtJfu6mo1fm+1rtdhpit45 elNq99tDHbez8DNnQeN2Qs4YbiIQsEoqYaJgpbILcNfPuuURHU65sa+uY g==; X-CSE-ConnectionGUID: Y/yUFj1KQ+CgVgsu+TdJSw== X-CSE-MsgGUID: fpRi6e3VQ/ONolBxQC26GQ== X-IronPort-AV: E=McAfee;i="6800,10657,11758"; a="88173124" X-IronPort-AV: E=Sophos;i="6.23,179,1770624000"; d="scan'208";a="88173124" Received: from orviesa005.jf.intel.com ([10.64.159.145]) by orvoesa105.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 13 Apr 2026 23:17:32 -0700 X-CSE-ConnectionGUID: AwOdP0CPQ9e+TYdypHne1w== X-CSE-MsgGUID: m8HEO7N+SWCQ3m3EweKoEA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.23,179,1770624000"; d="scan'208";a="234962895" Received: from varungup-desk.iind.intel.com ([10.190.238.71]) by orviesa005-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 13 Apr 2026 23:17:30 -0700 From: Arvind Yadav To: igt-dev@lists.freedesktop.org Cc: matthew.brost@intel.com, himal.prasad.ghimiray@intel.com, thomas.hellstrom@linux.intel.com, nishit.sharma@intel.com, pravalika.gurram@intel.com Subject: [PATCH i-g-t v10 7/8] tests/intel/xe_madvise: Add per-vma-tracking subtest Date: Tue, 14 Apr 2026 11:46:58 +0530 Message-ID: <20260414061703.2604112-8-arvind.yadav@intel.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260414061703.2604112-1-arvind.yadav@intel.com> References: <20260414061703.2604112-1-arvind.yadav@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: igt-dev@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Development mailing list for IGT GPU Tools List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: igt-dev-bounces@lists.freedesktop.org Sender: "igt-dev" This test validates that purgeable state is tracked per-VMA when a single BO is bound in multiple VMs. The test creates one BO shared across two VMs at different virtual addresses. It verifies that marking only one VMA as DONTNEED does not make the BO purgeable, but marking both VMAs as DONTNEED allows the kernel to purge the shared BO. This ensures proper per-VMA tracking for shared memory. v4: - The comment now clarifies that triggering pressure. (Nishit) v6: - Move resource cleanup before igt_skip() to avoid leaking VM and BO handles on platforms where memory pressure cannot be induced; replace igt_assert_eq(retained, 0) with a graceful skip. (Nishit) v7: - Removed unused 'hwe' parameter. Cc: Matthew Brost Cc: Thomas Hellström Cc: Himal Prasad Ghimiray Cc: Pravalika Gurram Reviewed-by: Nishit Sharma Signed-off-by: Arvind Yadav --- tests/intel/xe_madvise.c | 114 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 114 insertions(+) diff --git a/tests/intel/xe_madvise.c b/tests/intel/xe_madvise.c index 20316735f..fb40f4f8c 100644 --- a/tests/intel/xe_madvise.c +++ b/tests/intel/xe_madvise.c @@ -20,6 +20,7 @@ /* Purgeable test constants */ #define PURGEABLE_ADDR 0x1a0000 +#define PURGEABLE_ADDR2 0x2b0000 #define PURGEABLE_BATCH_ADDR 0x3c0000 #define PURGEABLE_BO_SIZE 4096 #define PURGEABLE_FENCE_VAL 0xbeef @@ -260,6 +261,58 @@ static void purgeable_setup_batch_and_data(int fd, uint32_t *vm, xe_wait_ufence(fd, &vm_sync, PURGEABLE_FENCE_VAL, 0, NSEC_PER_SEC); } +/** + * purgeable_setup_two_vms_shared_bo - Setup two VMs with one shared BO + * @fd: DRM file descriptor + * @vm1: Output first VM handle + * @vm2: Output second VM handle + * @bo: Output shared BO handle + * @addr1: Virtual address in VM1 + * @addr2: Virtual address in VM2 + * @size: Size of the BO + * @use_scratch: Whether to use scratch page flag for VMs + * + * Helper to create two VMs and bind one shared BO in both VMs. + * Returns mapped pointer to the BO. + */ +static void *purgeable_setup_two_vms_shared_bo(int fd, uint32_t *vm1, uint32_t *vm2, + uint32_t *bo, uint64_t addr1, + uint64_t addr2, size_t size, + bool use_scratch) +{ + struct drm_xe_sync sync = { + .type = DRM_XE_SYNC_TYPE_USER_FENCE, + .flags = DRM_XE_SYNC_FLAG_SIGNAL, + .timeline_value = 1, + }; + uint64_t sync_val = 0; + void *map; + + /* Create two VMs */ + *vm1 = xe_vm_create(fd, use_scratch ? DRM_XE_VM_CREATE_FLAG_SCRATCH_PAGE : 0, 0); + *vm2 = xe_vm_create(fd, use_scratch ? DRM_XE_VM_CREATE_FLAG_SCRATCH_PAGE : 0, 0); + + /* Create shared BO */ + *bo = xe_bo_create(fd, 0, size, vram_if_possible(fd, 0), + DRM_XE_GEM_CREATE_FLAG_NEEDS_VISIBLE_VRAM); + + map = xe_bo_map(fd, *bo, size); + memset(map, 0xAB, size); + + /* Bind BO in VM1 */ + sync.addr = to_user_pointer(&sync_val); + sync_val = 0; + xe_vm_bind_async(fd, *vm1, 0, *bo, 0, addr1, size, &sync, 1); + xe_wait_ufence(fd, &sync_val, 1, 0, NSEC_PER_SEC); + + /* Bind BO in VM2 */ + sync_val = 0; + xe_vm_bind_async(fd, *vm2, 0, *bo, 0, addr2, size, &sync, 1); + xe_wait_ufence(fd, &sync_val, 1, 0, NSEC_PER_SEC); + + return map; +} + /** * SUBTEST: dontneed-before-mmap * Description: Mark BO as DONTNEED before mmap, verify mmap() fails with -EBUSY @@ -539,6 +592,61 @@ static void test_dontneed_after_exec(int fd, struct drm_xe_engine_class_instance xe_vm_destroy(fd, vm); } +/** + * SUBTEST: per-vma-tracking + * Description: One BO in two VMs becomes purgeable only when both VMAs are DONTNEED + * Test category: functionality test + */ +static void test_per_vma_tracking(int fd) +{ + uint32_t bo, vm1, vm2; + uint64_t addr1 = PURGEABLE_ADDR; + uint64_t addr2 = PURGEABLE_ADDR2; + size_t bo_size = PURGEABLE_BO_SIZE; + uint32_t retained; + void *map; + + map = purgeable_setup_two_vms_shared_bo(fd, &vm1, &vm2, &bo, + addr1, addr2, + bo_size, false); + + /* Mark VMA1 as DONTNEED */ + retained = xe_vm_madvise_purgeable(fd, vm1, addr1, bo_size, + DRM_XE_VMA_PURGEABLE_STATE_DONTNEED); + igt_assert_eq(retained, 1); + + /* Verify BO NOT purgeable (VMA2 still WILLNEED) */ + retained = xe_vm_madvise_purgeable(fd, vm1, addr1, bo_size, + DRM_XE_VMA_PURGEABLE_STATE_WILLNEED); + igt_assert_eq(retained, 1); + + /* Mark both VMAs as DONTNEED */ + retained = xe_vm_madvise_purgeable(fd, vm1, addr1, bo_size, + DRM_XE_VMA_PURGEABLE_STATE_DONTNEED); + igt_assert_eq(retained, 1); + + retained = xe_vm_madvise_purgeable(fd, vm2, addr2, bo_size, + DRM_XE_VMA_PURGEABLE_STATE_DONTNEED); + igt_assert_eq(retained, 1); + + /* + * Trigger pressure and verify BO was purged. + * Using vm1 is sufficient since both VMAs are DONTNEED - kernel can purge the BO. + */ + trigger_memory_pressure(fd); + + retained = xe_vm_madvise_purgeable(fd, vm1, addr1, bo_size, + DRM_XE_VMA_PURGEABLE_STATE_WILLNEED); + munmap(map, bo_size); + gem_close(fd, bo); + xe_vm_destroy(fd, vm1); + xe_vm_destroy(fd, vm2); + + if (retained != 0) + igt_skip("Unable to induce purge on this platform/config"); + +} + int igt_main() { struct drm_xe_engine_class_instance *hwe; @@ -581,6 +689,12 @@ int igt_main() break; } + igt_subtest("per-vma-tracking") + xe_for_each_engine(fd, hwe) { + test_per_vma_tracking(fd); + break; + } + igt_fixture() { xe_device_put(fd); drm_close_driver(fd); -- 2.43.0