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 E16CBCD37AC for ; Tue, 12 May 2026 03:58:54 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 6E45E10E254; Tue, 12 May 2026 03:58:54 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="eQQcA/+A"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.9]) by gabe.freedesktop.org (Postfix) with ESMTPS id 7F2DA10E254 for ; Tue, 12 May 2026 03:58:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1778558317; x=1810094317; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=NFoxS/d1kfko8X49a0jijLV3USbR2dJgHDqYdcenmbU=; b=eQQcA/+AwYnaruKW+5LEGXNU8GbSmns8Ujg4R4Da3KgZSTsf8Grb6d3T qxC3t6b0nZZkryCmGQt6pNknBFSniBXLC3oTErHiiBpvRHsbUk10bC9jw GfMswLEwlPmL44VEzNX+j47IqHN7iomkzIuui1h1IWsa0qDzhR3vd2AE7 xVNkqp69kdB8V2u/4vXiO6yHuF97qRSTbgmSSPs/QsRBIpkUtOqmS1O1v XX3KYmAByK7D+45qvoBo1mPRPhvFToO6+qtPZAWBtxhIfcHz/VG38WFKZ OCYoEG9Ip77EXJRpyOXxe4dkPNTgPthG1xt+YiWkOOW0PkgTrMhDrkEvv w==; X-CSE-ConnectionGUID: ZckvzADeRmKbjz0zcrERDw== X-CSE-MsgGUID: Gimc/WikSJaSs3tSuVEnKQ== X-IronPort-AV: E=McAfee;i="6800,10657,11783"; a="90156370" X-IronPort-AV: E=Sophos;i="6.23,230,1770624000"; d="scan'208";a="90156370" Received: from orviesa010.jf.intel.com ([10.64.159.150]) by fmvoesa103.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 11 May 2026 20:58:37 -0700 X-CSE-ConnectionGUID: LDpcDRsLQGSNQWzSfH8leA== X-CSE-MsgGUID: WvLO+9OXStukmEN38ve2lg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.23,230,1770624000"; d="scan'208";a="236806567" Received: from varungup-desk.iind.intel.com ([10.190.238.71]) by orviesa010-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 11 May 2026 20:58:35 -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: [i-g-t v2] tests/intel/xe_madvise: Add partial-unbind-dontneed subtest Date: Tue, 12 May 2026 09:28:16 +0530 Message-ID: <20260512035816.158130-1-arvind.yadav@intel.com> X-Mailer: git-send-email 2.43.0 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" A partial unbind on a DONTNEED BO must succeed because remap remnants inherit the existing DONTNEED VMA state. A fresh bind on the same BO must fail with -EBUSY so a new mapping cannot promote purgeable memory back to WILLNEED. 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 | 65 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 65 insertions(+) diff --git a/tests/intel/xe_madvise.c b/tests/intel/xe_madvise.c index cdb115d7e..6e4b18e8f 100644 --- a/tests/intel/xe_madvise.c +++ b/tests/intel/xe_madvise.c @@ -20,6 +20,7 @@ #include "xe/xe_gt.h" #include "xe/xe_ioctl.h" #include "xe/xe_query.h" +#include "intel_pat.h" /* Purgeable test constants */ #define PURGEABLE_ADDR 0x1a0000 @@ -1034,6 +1035,64 @@ static void test_atomic_cpu(int fd, struct drm_xe_engine_class_instance *eci) xe_vm_destroy(fd, vm); } +/** + * SUBTEST: partial-unbind-dontneed + * Description: Partial unbind on a DONTNEED BO must succeed; a fresh bind + * on the same DONTNEED BO must be rejected with -EBUSY. + * Test category: functionality test + */ +static void test_partial_unbind_dontneed(int fd) +{ + uint32_t vm, bo; + uint64_t addr = PURGEABLE_ADDR; + uint64_t addr2 = PURGEABLE_ADDR2; + size_t page_size = PURGEABLE_BO_SIZE; + size_t bo_size = 2 * PURGEABLE_BO_SIZE; + struct drm_xe_sync sync = { + .type = DRM_XE_SYNC_TYPE_USER_FENCE, + .flags = DRM_XE_SYNC_FLAG_SIGNAL, + .timeline_value = PURGEABLE_FENCE_VAL, + }; + uint64_t sync_val = 0; + uint32_t retained; + int ret; + + vm = xe_vm_create(fd, 0, 0); + bo = xe_bo_create(fd, vm, bo_size, vram_if_possible(fd, 0), + DRM_XE_GEM_CREATE_FLAG_NEEDS_VISIBLE_VRAM); + + sync.addr = to_user_pointer(&sync_val); + xe_vm_bind_async(fd, vm, 0, bo, 0, addr, bo_size, &sync, 1); + xe_wait_ufence(fd, &sync_val, PURGEABLE_FENCE_VAL, 0, NSEC_PER_SEC); + + /* Mark BO as DONTNEED. */ + retained = xe_vm_madvise_purgeable(fd, vm, addr, bo_size, + DRM_XE_VMA_PURGEABLE_STATE_DONTNEED); + igt_assert_eq(retained, 1); + + /* + * Partial unbind of the first page must succeed. The remap split + * inherits the parent VMA's DONTNEED attr and must not be rejected. + */ + sync_val = 0; + xe_vm_unbind_async(fd, vm, 0, 0, addr, page_size, &sync, 1); + xe_wait_ufence(fd, &sync_val, PURGEABLE_FENCE_VAL, 0, NSEC_PER_SEC); + + /* + * A fresh bind on the same DONTNEED BO must be rejected with -EBUSY. + * The kernel must not silently promote a DONTNEED BO back to WILLNEED + * through a new bind. + */ + sync_val = 0; + ret = __xe_vm_bind(fd, vm, 0, bo, 0, addr2, bo_size, + DRM_XE_VM_BIND_OP_MAP, 0, &sync, 1, 0, + DEFAULT_PAT_INDEX, 0); + igt_assert_eq(ret, -EBUSY); + + gem_close(fd, bo); + xe_vm_destroy(fd, vm); +} + int igt_main() { struct drm_xe_engine_class_instance *hwe; @@ -1090,6 +1149,12 @@ int igt_main() test_per_vma_protection(fd, hwe); break; } + + igt_subtest("partial-unbind-dontneed") + xe_for_each_engine(fd, hwe) { + test_partial_unbind_dontneed(fd); + break; + } } igt_subtest_group() { -- 2.43.0