From patchwork Thu Nov 7 10:21:20 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: William Roche X-Patchwork-Id: 13866117 Received: from mx0b-00069f02.pphosted.com (mx0b-00069f02.pphosted.com [205.220.177.32]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id DFF901DB54B for ; Thu, 7 Nov 2024 10:21:48 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=fail smtp.client-ip=205.220.177.32 ARC-Seal: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730974910; cv=fail; b=RJ3hQ4UXTFMf1d2qqCycfhiWFCUfZVuOTMdEi6Yl3OHv7/tsvVnn+NZD/nrfbF2nNagUTfZnDfwjxTkPtbEGV/XpYf9mXyKAhi24hFBVKEpD7nzYohhlfefzmdTOXxP9SNG4dr4zfZLdx1QpSslvi8G0517xX737nKXO2qn5EZc= ARC-Message-Signature: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730974910; c=relaxed/simple; bh=fKp+zwGa/7XYS2OcjJ6kO2dFy+2sMp1AGdpRt/bZ/q8=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: Content-Type:MIME-Version; b=hHsMokRrtszzb2DK1DbuQmihq1ivgSxxhjGClUx9ww5eURey/5wUy+gn0wJEzngsuWRItb9fjeS1XpZMIl64zim+psdZQvCIjodsFC/JDRxxxFJRgDNdeJfUgzkO9qIo4i9x74EeUCtHvEWwVjgRVl4CpAOxIztqicLoqMqT0Ps= ARC-Authentication-Results: i=2; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=oracle.com; spf=pass smtp.mailfrom=oracle.com; dkim=pass (2048-bit key) header.d=oracle.com header.i=@oracle.com header.b=YEIWWSD6; dkim=pass (1024-bit key) header.d=oracle.onmicrosoft.com header.i=@oracle.onmicrosoft.com header.b=X3rck6jg; arc=fail smtp.client-ip=205.220.177.32 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=oracle.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=oracle.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=oracle.com header.i=@oracle.com header.b="YEIWWSD6"; dkim=pass (1024-bit key) header.d=oracle.onmicrosoft.com header.i=@oracle.onmicrosoft.com header.b="X3rck6jg" Received: from pps.filterd (m0333520.ppops.net [127.0.0.1]) by mx0b-00069f02.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 4A71fYMm000760; Thu, 7 Nov 2024 10:21:34 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=cc :content-transfer-encoding:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to; s= corp-2023-11-20; bh=MBAG7MhQBBCzJSZ6lPEp7h0EoZeK3PNMqygbk4HHkbM=; b= YEIWWSD6vyXuXSyhTLeUS6pKB7+pKwNU0Q1b+FxSfmF3CV8kkc5sLqwPUcUA5UqY ZWWIv+utL2V8YmGDXv8JFF0Wvtud562OY0UuiDqrWom3sp6bmLMGyqnm7KVpg1Kd IhUXsbd5A9VfVBVtXKHrYayuT3BrbMw3tP9u2sCSbdImLX749nFjzYJXpNXMhAcs zuoHKRLkPhGira15XGZRHhVealG1uvCs+qUQ/caVjovb9jZ7YHGjdRb6eL6e4t8U LK6ANRBf6sp6Eqcu7OFEBvFfI/QnxfVlVM8Z9ICWiHkx7vwmznVn5xt4v4xuNEdG lnaIxOA4BQ2iQFXzqnEtAA== Received: from iadpaimrmta03.imrmtpd1.prodappiadaev1.oraclevcn.com (iadpaimrmta03.appoci.oracle.com [130.35.103.27]) by mx0b-00069f02.pphosted.com (PPS) with ESMTPS id 42nc4c27ky-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 07 Nov 2024 10:21:34 +0000 (GMT) Received: from pps.filterd (iadpaimrmta03.imrmtpd1.prodappiadaev1.oraclevcn.com [127.0.0.1]) by iadpaimrmta03.imrmtpd1.prodappiadaev1.oraclevcn.com (8.18.1.2/8.18.1.2) with ESMTP id 4A78oADI009824; Thu, 7 Nov 2024 10:21:33 GMT Received: from nam10-mw2-obe.outbound.protection.outlook.com (mail-mw2nam10lp2041.outbound.protection.outlook.com [104.47.55.41]) by iadpaimrmta03.imrmtpd1.prodappiadaev1.oraclevcn.com (PPS) with ESMTPS id 42nahg538a-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 07 Nov 2024 10:21:33 +0000 ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=HHajgneSUkhH7r93kTq4DDwvYplFpOwV1PIwMZCTKcT+lQwOjmzAQQGaANlmdgk8B2lkGyeB0cPPpylDLMP1X6DH/Kwb1fRKovRL1yrl3cU5TfJRJNIpP2r2ywykFjQfqeIL1d6XV2pM9Gb3PwjLeB7J/hYTImP6H4ISQwCYS/oA7CDZ+nelSfBUg0hkCqI18wsU86HLUeraoyLfoo6AVWcj6FSGrOxP0HbJwnb74sCLFe62CCduLsWu/UBTKCi2B2/bbG+jcCxNR5c1IedaJJvPiHCUA/vmWB5OFhJH7/zjVehI8+S2VeNeTfoso6IHhC8kKCJtsBLnznUBTkJ8Tw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector10001; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=MBAG7MhQBBCzJSZ6lPEp7h0EoZeK3PNMqygbk4HHkbM=; b=mkxNJ1rKNKbyeGtWaccvT1ied8TgS9NrbTrTyafR5/6e48ysG60V9CqkialDYcYoNRA38THW52sD5oQMSW0JT/JA8Vf3iX4wi2iyrkD5KWa/ipNJ03epFe4VtEOUiAOEDxkDPwO+5qhq/1F79p3j+748ilpDUbJ9fYTkpqhVgvGfUVCJgGqdZMQsbUawM9AaL4wAHTT07IqzPJkkpGdMJB0wpseu2LKJuDk/H5asvrj1Lt0heOEK9fHEh5zJzWsbd8X2S9qhZ0RkHFTCuBVT6VIdBOuG562ZMgwpS6H6Q0rcGsPvL0Ys9tGSNvhqaxcRKMtDoqV0Nc+yLHp2lg8Wtg== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=oracle.com; dmarc=pass action=none header.from=oracle.com; dkim=pass header.d=oracle.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.onmicrosoft.com; s=selector2-oracle-onmicrosoft-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=MBAG7MhQBBCzJSZ6lPEp7h0EoZeK3PNMqygbk4HHkbM=; b=X3rck6jgzLQVeW3NVa3r9gcOAqKmLvdrCRVIZI/Ok/n+SeMHmrdcyJmJqZWFUo/6QTAWK3YiH+QBfJOU0fSX+5aMBuJacFG8mq/ZfADtY8b4n2e9MZK8ZiuVk0NUU0OzSX4iAs6SL4PlJZA+p5cYAXhQeetXrxnXKKa7fcYtT2c= Received: from CH3PR10MB7329.namprd10.prod.outlook.com (2603:10b6:610:12c::16) by DM6PR10MB4187.namprd10.prod.outlook.com (2603:10b6:5:210::15) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.8137.19; Thu, 7 Nov 2024 10:21:31 +0000 Received: from CH3PR10MB7329.namprd10.prod.outlook.com ([fe80::f238:6143:104c:da23]) by CH3PR10MB7329.namprd10.prod.outlook.com ([fe80::f238:6143:104c:da23%3]) with mapi id 15.20.8137.018; Thu, 7 Nov 2024 10:21:31 +0000 From: =?utf-8?q?=E2=80=9CWilliam_Roche?= To: david@redhat.com, kvm@vger.kernel.org, qemu-devel@nongnu.org, qemu-arm@nongnu.org Cc: william.roche@oracle.com, peterx@redhat.com, pbonzini@redhat.com, richard.henderson@linaro.org, philmd@linaro.org, peter.maydell@linaro.org, mtosatti@redhat.com, imammedo@redhat.com, eduardo@habkost.net, marcel.apfelbaum@gmail.com, wangyanan55@huawei.com, zhao1.liu@intel.com, joao.m.martins@oracle.com Subject: [PATCH v2 1/7] accel/kvm: Keep track of the HWPoisonPage page_size Date: Thu, 7 Nov 2024 10:21:20 +0000 Message-ID: <20241107102126.2183152-2-william.roche@oracle.com> X-Mailer: git-send-email 2.43.5 In-Reply-To: <20241107102126.2183152-1-william.roche@oracle.com> References: <20241107102126.2183152-1-william.roche@oracle.com> X-ClientProxiedBy: SJ0PR13CA0142.namprd13.prod.outlook.com (2603:10b6:a03:2c6::27) To CH3PR10MB7329.namprd10.prod.outlook.com (2603:10b6:610:12c::16) Precedence: bulk X-Mailing-List: kvm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CH3PR10MB7329:EE_|DM6PR10MB4187:EE_ X-MS-Office365-Filtering-Correlation-Id: d34a29b5-9ce7-44b2-150d-08dcff15f277 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|1800799024|7416014|366016|376014; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:CH3PR10MB7329.namprd10.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230040)(1800799024)(7416014)(366016)(376014);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: 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 X-MS-Exchange-AntiSpam-ExternalHop-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-ExternalHop-MessageData-0: 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 X-OriginatorOrg: oracle.com X-MS-Exchange-CrossTenant-Network-Message-Id: d34a29b5-9ce7-44b2-150d-08dcff15f277 X-MS-Exchange-CrossTenant-AuthSource: CH3PR10MB7329.namprd10.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 07 Nov 2024 10:21:30.9328 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 4e2c6054-71cb-48f1-bd6c-3a9705aca71b X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: tPje6gvFc9GWGpVZBeaL9C9g7ihQzcR7yR5Ojilh7sMgjHBcQewNLewqaQSK6WHIXIYVs4PPIWFeTe9Px9WxMYUJQRu6ej4Lyh2cGeUk95Y= X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM6PR10MB4187 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1057,Hydra:6.0.680,FMLib:17.12.62.30 definitions=2024-11-07_01,2024-11-06_01,2024-09-30_01 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 adultscore=0 phishscore=0 mlxlogscore=999 mlxscore=0 suspectscore=0 bulkscore=0 malwarescore=0 spamscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2409260000 definitions=main-2411070079 X-Proofpoint-ORIG-GUID: 5mdBIILOWk07rTbpKxVgphhJCeZHNMvp X-Proofpoint-GUID: 5mdBIILOWk07rTbpKxVgphhJCeZHNMvp From: William Roche When a memory page is added to the hwpoison_page_list, include the page size information. This size is the backend real page size. To better deal with hugepages, we create a single entry for the entire page. Signed-off-by: William Roche --- accel/kvm/kvm-all.c | 8 +++++++- include/exec/cpu-common.h | 1 + system/physmem.c | 13 +++++++++++++ 3 files changed, 21 insertions(+), 1 deletion(-) diff --git a/accel/kvm/kvm-all.c b/accel/kvm/kvm-all.c index 801cff16a5..6dd06f5edf 100644 --- a/accel/kvm/kvm-all.c +++ b/accel/kvm/kvm-all.c @@ -1266,6 +1266,7 @@ int kvm_vm_check_extension(KVMState *s, unsigned int extension) */ typedef struct HWPoisonPage { ram_addr_t ram_addr; + size_t page_size; QLIST_ENTRY(HWPoisonPage) list; } HWPoisonPage; @@ -1278,7 +1279,7 @@ static void kvm_unpoison_all(void *param) QLIST_FOREACH_SAFE(page, &hwpoison_page_list, list, next_page) { QLIST_REMOVE(page, list); - qemu_ram_remap(page->ram_addr, TARGET_PAGE_SIZE); + qemu_ram_remap(page->ram_addr, page->page_size); g_free(page); } } @@ -1286,6 +1287,10 @@ static void kvm_unpoison_all(void *param) void kvm_hwpoison_page_add(ram_addr_t ram_addr) { HWPoisonPage *page; + size_t sz = qemu_ram_pagesize_from_addr(ram_addr); + + if (sz > TARGET_PAGE_SIZE) + ram_addr = ROUND_DOWN(ram_addr, sz); QLIST_FOREACH(page, &hwpoison_page_list, list) { if (page->ram_addr == ram_addr) { @@ -1294,6 +1299,7 @@ void kvm_hwpoison_page_add(ram_addr_t ram_addr) } page = g_new(HWPoisonPage, 1); page->ram_addr = ram_addr; + page->page_size = sz; QLIST_INSERT_HEAD(&hwpoison_page_list, page, list); } diff --git a/include/exec/cpu-common.h b/include/exec/cpu-common.h index 638dc806a5..8f8f7ad567 100644 --- a/include/exec/cpu-common.h +++ b/include/exec/cpu-common.h @@ -108,6 +108,7 @@ bool qemu_ram_is_named_file(RAMBlock *rb); int qemu_ram_get_fd(RAMBlock *rb); size_t qemu_ram_pagesize(RAMBlock *block); +size_t qemu_ram_pagesize_from_addr(ram_addr_t addr); size_t qemu_ram_pagesize_largest(void); /** diff --git a/system/physmem.c b/system/physmem.c index dc1db3a384..750604d47d 100644 --- a/system/physmem.c +++ b/system/physmem.c @@ -1665,6 +1665,19 @@ size_t qemu_ram_pagesize(RAMBlock *rb) return rb->page_size; } +/* Return backend real page size used for the given ram_addr. */ +size_t qemu_ram_pagesize_from_addr(ram_addr_t addr) +{ + RAMBlock *rb; + + RCU_READ_LOCK_GUARD(); + rb = qemu_get_ram_block(addr); + if (!rb) { + return TARGET_PAGE_SIZE; + } + return qemu_ram_pagesize(rb); +} + /* Returns the largest size of page in use */ size_t qemu_ram_pagesize_largest(void) {