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 lists.gnu.org (lists.gnu.org [209.51.188.17]) (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 EB9DCC3DA4A for ; Wed, 19 Feb 2025 08:27:11 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1tkfPU-0005Ra-0a; Wed, 19 Feb 2025 03:26:24 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1tkfPR-0005R0-R9 for qemu-devel@nongnu.org; Wed, 19 Feb 2025 03:26:22 -0500 Received: from mgamail.intel.com ([192.198.163.17]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1tkfPP-0004Za-Ic for qemu-devel@nongnu.org; Wed, 19 Feb 2025 03:26:21 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1739953580; x=1771489580; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=BBos9TMEnyoSZ/PC59m1etHG0x5EWREqcsDCxiYnHsk=; b=jkayOLn/ILNYCQ+cIG9oLtKnSucCFnmXPBMbRjpLUodt1IIcypdgZxUf /tVdZtzh2cXOgQBagj7+XiSm3TkEKy9/gcqEH0SsUHJG1l5eHqvdAjshv ffn3a9LFetGTSnR7LHhx4NxCGBpq0iofn8xpByMzyUy8cIBZu0l+SNVaG xSyPSovKYGWu8I2JuxzlWecj1LMifUg7nG93pKACtec9H1fH9azmvyDVN hCaID0BulwlWJNco/Yy3Mh6S0eo8NtXt+uqA2C5L5bsMejS0WeudSyLuw +9IOiS5mOSokyMMuNyBiAGj2/Tpw66o1PdmXDApvKuwJgq7W45vnRlzYL A==; X-CSE-ConnectionGUID: QAMNEVJTQD6xP3WyVUofxw== X-CSE-MsgGUID: q/mo3sKyQIuyUMN7Xal9kw== X-IronPort-AV: E=McAfee;i="6700,10204,11348"; a="40544042" X-IronPort-AV: E=Sophos;i="6.13,298,1732608000"; d="scan'208";a="40544042" Received: from orviesa005.jf.intel.com ([10.64.159.145]) by fmvoesa111.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 19 Feb 2025 00:26:09 -0800 X-CSE-ConnectionGUID: uGqC7U+UTVq/HngNGwYrhw== X-CSE-MsgGUID: rTyTWlLASpCovG4yNCQEtQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.12,224,1728975600"; d="scan'208";a="119850808" Received: from spr-s2600bt.bj.intel.com ([10.240.192.127]) by orviesa005-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 19 Feb 2025 00:26:05 -0800 From: Zhenzhong Duan To: qemu-devel@nongnu.org Cc: alex.williamson@redhat.com, clg@redhat.com, eric.auger@redhat.com, mst@redhat.com, jasowang@redhat.com, peterx@redhat.com, jgg@nvidia.com, nicolinc@nvidia.com, shameerali.kolothum.thodi@huawei.com, joao.m.martins@oracle.com, clement.mathieu--drif@eviden.com, kevin.tian@intel.com, yi.l.liu@intel.com, chao.p.peng@intel.com, Zhenzhong Duan Subject: [PATCH rfcv2 01/20] backends/iommufd: Add helpers for invalidating user-managed HWPT Date: Wed, 19 Feb 2025 16:22:09 +0800 Message-Id: <20250219082228.3303163-2-zhenzhong.duan@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20250219082228.3303163-1-zhenzhong.duan@intel.com> References: <20250219082228.3303163-1-zhenzhong.duan@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=192.198.163.17; envelope-from=zhenzhong.duan@intel.com; helo=mgamail.intel.com X-Spam_score_int: -47 X-Spam_score: -4.8 X-Spam_bar: ---- X-Spam_report: (-4.8 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.423, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Signed-off-by: Nicolin Chen Signed-off-by: Zhenzhong Duan --- include/system/iommufd.h | 3 +++ backends/iommufd.c | 30 ++++++++++++++++++++++++++++++ backends/trace-events | 1 + 3 files changed, 34 insertions(+) diff --git a/include/system/iommufd.h b/include/system/iommufd.h index cbab75bfbf..5d02e9d148 100644 --- a/include/system/iommufd.h +++ b/include/system/iommufd.h @@ -61,6 +61,9 @@ bool iommufd_backend_get_dirty_bitmap(IOMMUFDBackend *be, uint32_t hwpt_id, uint64_t iova, ram_addr_t size, uint64_t page_size, uint64_t *data, Error **errp); +int iommufd_backend_invalidate_cache(IOMMUFDBackend *be, uint32_t hwpt_id, + uint32_t data_type, uint32_t entry_len, + uint32_t *entry_num, void *data_ptr); #define TYPE_HOST_IOMMU_DEVICE_IOMMUFD TYPE_HOST_IOMMU_DEVICE "-iommufd" #endif diff --git a/backends/iommufd.c b/backends/iommufd.c index d57da44755..fc32aad5cb 100644 --- a/backends/iommufd.c +++ b/backends/iommufd.c @@ -311,6 +311,36 @@ bool iommufd_backend_get_device_info(IOMMUFDBackend *be, uint32_t devid, return true; } +int iommufd_backend_invalidate_cache(IOMMUFDBackend *be, uint32_t hwpt_id, + uint32_t data_type, uint32_t entry_len, + uint32_t *entry_num, void *data_ptr) +{ + int ret, fd = be->fd; + struct iommu_hwpt_invalidate cache = { + .size = sizeof(cache), + .hwpt_id = hwpt_id, + .data_type = data_type, + .entry_len = entry_len, + .entry_num = *entry_num, + .data_uptr = (uintptr_t)data_ptr, + }; + + ret = ioctl(fd, IOMMU_HWPT_INVALIDATE, &cache); + + trace_iommufd_backend_invalidate_cache(fd, hwpt_id, data_type, entry_len, + *entry_num, cache.entry_num, + (uintptr_t)data_ptr, ret); + if (ret) { + *entry_num = cache.entry_num; + error_report("IOMMU_HWPT_INVALIDATE failed: %s", strerror(errno)); + ret = -errno; + } else { + g_assert(*entry_num == cache.entry_num); + } + + return ret; +} + static int hiod_iommufd_get_cap(HostIOMMUDevice *hiod, int cap, Error **errp) { HostIOMMUDeviceCaps *caps = &hiod->caps; diff --git a/backends/trace-events b/backends/trace-events index 40811a3162..5a23db6c8a 100644 --- a/backends/trace-events +++ b/backends/trace-events @@ -18,3 +18,4 @@ iommufd_backend_alloc_hwpt(int iommufd, uint32_t dev_id, uint32_t pt_id, uint32_ iommufd_backend_free_id(int iommufd, uint32_t id, int ret) " iommufd=%d id=%d (%d)" iommufd_backend_set_dirty(int iommufd, uint32_t hwpt_id, bool start, int ret) " iommufd=%d hwpt=%u enable=%d (%d)" iommufd_backend_get_dirty_bitmap(int iommufd, uint32_t hwpt_id, uint64_t iova, uint64_t size, uint64_t page_size, int ret) " iommufd=%d hwpt=%u iova=0x%"PRIx64" size=0x%"PRIx64" page_size=0x%"PRIx64" (%d)" +iommufd_backend_invalidate_cache(int iommufd, uint32_t hwpt_id, uint32_t data_type, uint32_t entry_len, uint32_t entry_num, uint32_t done_num, uint64_t data_ptr, int ret) " iommufd=%d hwpt_id=%u data_type=%u entry_len=%u entry_num=%u done_num=%u data_ptr=0x%"PRIx64" (%d)" -- 2.34.1