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 kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id E4946C83030 for ; Fri, 4 Jul 2025 08:46:29 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 7211B6B00AE; Fri, 4 Jul 2025 04:46:29 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 6D18E6B8018; Fri, 4 Jul 2025 04:46:29 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 599226B800A; Fri, 4 Jul 2025 04:46:29 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0010.hostedemail.com [216.40.44.10]) by kanga.kvack.org (Postfix) with ESMTP id 4685D6B00AE for ; Fri, 4 Jul 2025 04:46:29 -0400 (EDT) Received: from smtpin28.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay01.hostedemail.com (Postfix) with ESMTP id 07F111DB515 for ; Fri, 4 Jul 2025 08:46:29 +0000 (UTC) X-FDA: 83625950898.28.DCD884C Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by imf17.hostedemail.com (Postfix) with ESMTP id 7467C4000B for ; Fri, 4 Jul 2025 08:46:26 +0000 (UTC) Authentication-Results: imf17.hostedemail.com; dkim=pass header.d=redhat.com header.s=mimecast20190719 header.b=dbvHCt9o; spf=pass (imf17.hostedemail.com: domain of david@redhat.com designates 170.10.133.124 as permitted sender) smtp.mailfrom=david@redhat.com; dmarc=pass (policy=quarantine) header.from=redhat.com ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1751618786; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=mVyrAhiOnPT8DybQln1iSMYW0QSR+P4ZCW/jBPEH7PI=; b=P1DHtrETGa+UyvXqQ3cfBepZCFX/8HZFTLU3hvQRtNpqQDghkBVEDU+ykSnMaRv1ebrL9B S9C307b/NernFZLGJJKy41Vn/1ujoplxa2CUTGU1e5UdjILGU8SkQAj6ZXtTIK2M+qS2mg ZJTJTXNnF3VgCKFmpX0oanhzTX3grtM= ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1751618786; a=rsa-sha256; cv=none; b=1JyzczCMC3VETCg/gXzlFQUMZ20OTUdZILoFC26tXdvQ9OEURZtHouibmhK50dWS1X5/WY lUFU54bkr6vmiloS1rB4+axn7HDgahbjsfqW/dipUQnb+S9wUue0Bs9fI10hZv19oH+Eum igDku7Pv7t/EZVzFhJ58GTAqEUFYQuk= ARC-Authentication-Results: i=1; imf17.hostedemail.com; dkim=pass header.d=redhat.com header.s=mimecast20190719 header.b=dbvHCt9o; spf=pass (imf17.hostedemail.com: domain of david@redhat.com designates 170.10.133.124 as permitted sender) smtp.mailfrom=david@redhat.com; dmarc=pass (policy=quarantine) header.from=redhat.com DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1751618785; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:autocrypt:autocrypt; bh=mVyrAhiOnPT8DybQln1iSMYW0QSR+P4ZCW/jBPEH7PI=; b=dbvHCt9o14wUKrNqQvxVjgYt4kwvji4mehNFkCO64FjbJsLkPf673A4RSreFrWoSYT5CQQ rIWA/G8N0wq3559aKX/0kiX3Jft4bPffxZX49dZeb4VvBY4omm96ckQR+N2lYLj3V6Ma6H 79k9ODV4J8jcIYQxPJ08r6cqY2ZbcXs= Received: from mail-wm1-f72.google.com (mail-wm1-f72.google.com [209.85.128.72]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-656-eF-HAcVEP5-C5TcC57VTjA-1; Fri, 04 Jul 2025 04:46:21 -0400 X-MC-Unique: eF-HAcVEP5-C5TcC57VTjA-1 X-Mimecast-MFC-AGG-ID: eF-HAcVEP5-C5TcC57VTjA_1751618781 Received: by mail-wm1-f72.google.com with SMTP id 5b1f17b1804b1-451d7de4ae3so3549905e9.2 for ; Fri, 04 Jul 2025 01:46:21 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1751618780; x=1752223580; h=content-transfer-encoding:in-reply-to:organization:autocrypt :content-language:from:references:cc:to:subject:user-agent :mime-version:date:message-id:x-gm-message-state:from:to:cc:subject :date:message-id:reply-to; bh=mVyrAhiOnPT8DybQln1iSMYW0QSR+P4ZCW/jBPEH7PI=; b=sBdyd5Gl/RNqTDJul1h6L7WvqHetAhr1h+e0YTcnpDDqHDGyTD8QRbBvaKBEG7Lzdi McdFRD/vBEsy8LBnVE/FAHGgnRdGd5pB9uhl4V4iDhD4Fqwz7c62j+1vseYpb5AeEdlh e6Utpul4GJZOtYU8wmDLTJPdNIbWYMWVdYLbfi1ovwUbwybbwf2ntWAg4eYqdcAKZHab p9o2XbkdvGT+ObW13ssxgNqE3NxoRwpKyofzWEoxvhkXiorVlVaeBx0QA/frFNXnijYM q2mpBt5qXg0wAxsWoEpYHeqytsnqjhp12MEim0BsWmKR0R9pjhwCgCeXhDn0FjXJ5ZVy xVBg== X-Forwarded-Encrypted: i=1; AJvYcCWdFQiROTmBK3nU6GR+AZdnJOpOFMJc/4+7Y6z+FLsHwxlv4g/wDVbLqF46+EXKlIcjKmnk6U4zYQ==@kvack.org X-Gm-Message-State: AOJu0YwY+4lGZ7u+wxtjpJnaqsV/CfZsACa4rkBRjLNpdvB7wnUPFkQy PFCRE5OYbyKFXVsFceNebAMVFwePCdsLl9Lj8WzaGTLgrEp8OS5rKJD+N/sgciKClxIb4NC+kLe RO8Yy6N4NbTVd+rbP5O2z0c6xsWiaobk+OlMztKSYD/ppLECYpIuW X-Gm-Gg: ASbGnct4xAc9dP6mFfs7oC1Gk8dZfyrpf2mUpMIiE5E94gS2dOYLj61fJLAdzZt1yw0 MTHi5fiM2WpNkBnqpP+yz9PKrvHX20EKMrENg1C8YLsBAgv5/VXI2XldMAj7iakAEkSpDYibgaa A8RY4gUuBCOJFUepyXhVwhytOuYjxZ47cbGa3Wt7BWYhqoFTL1FdQBSDVwiJh0l5oabOn3FI5Kr 7V+Eyx3UQXuv4o4g1OXQp52OMB+uXdg1A9TNec54nU7v7kFSlLuknmBcBYsgPAtWJSEHI485Jhe BAW4+mH3b3Tl+yxHxr6X+bM54ABbaw82WJtw83e6tR+UI4MRb/U/mjC84xX0G+ey0hekwbuteux d62rs1lFzigLzsTTBPd8KGWluUoZKOH0JrbDN2DAOSfOXnco= X-Received: by 2002:a05:600c:4711:b0:450:cfcb:5c9b with SMTP id 5b1f17b1804b1-454b3108982mr14259435e9.1.1751618780379; Fri, 04 Jul 2025 01:46:20 -0700 (PDT) X-Google-Smtp-Source: AGHT+IHaUV8FC+Py3RIAFTeLzepgFWje3L0XmJO5Yhj+dy4UyFtkI7upnmtWvFcBPMBDMfvgNn2l6w== X-Received: by 2002:a05:600c:4711:b0:450:cfcb:5c9b with SMTP id 5b1f17b1804b1-454b3108982mr14259055e9.1.1751618779935; Fri, 04 Jul 2025 01:46:19 -0700 (PDT) Received: from ?IPV6:2003:d8:2f2c:5500:988:23f9:faa0:7232? (p200300d82f2c5500098823f9faa07232.dip0.t-ipconnect.de. [2003:d8:2f2c:5500:988:23f9:faa0:7232]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-3b471b97353sm1929683f8f.51.2025.07.04.01.46.19 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 04 Jul 2025 01:46:19 -0700 (PDT) Message-ID: <10a7ced9-33f2-47a0-b368-a6fecad6a842@redhat.com> Date: Fri, 4 Jul 2025 10:46:18 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 4/5] vfio/type1: introduce a new member has_rsvd for struct vfio_dma To: lizhe.67@bytedance.com, alex.williamson@redhat.com, akpm@linux-foundation.org, peterx@redhat.com, jgg@ziepe.ca Cc: kvm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org References: <20250704062602.33500-1-lizhe.67@bytedance.com> <20250704062602.33500-5-lizhe.67@bytedance.com> From: David Hildenbrand Autocrypt: addr=david@redhat.com; keydata= xsFNBFXLn5EBEAC+zYvAFJxCBY9Tr1xZgcESmxVNI/0ffzE/ZQOiHJl6mGkmA1R7/uUpiCjJ dBrn+lhhOYjjNefFQou6478faXE6o2AhmebqT4KiQoUQFV4R7y1KMEKoSyy8hQaK1umALTdL QZLQMzNE74ap+GDK0wnacPQFpcG1AE9RMq3aeErY5tujekBS32jfC/7AnH7I0v1v1TbbK3Gp XNeiN4QroO+5qaSr0ID2sz5jtBLRb15RMre27E1ImpaIv2Jw8NJgW0k/D1RyKCwaTsgRdwuK Kx/Y91XuSBdz0uOyU/S8kM1+ag0wvsGlpBVxRR/xw/E8M7TEwuCZQArqqTCmkG6HGcXFT0V9 PXFNNgV5jXMQRwU0O/ztJIQqsE5LsUomE//bLwzj9IVsaQpKDqW6TAPjcdBDPLHvriq7kGjt WhVhdl0qEYB8lkBEU7V2Yb+SYhmhpDrti9Fq1EsmhiHSkxJcGREoMK/63r9WLZYI3+4W2rAc UucZa4OT27U5ZISjNg3Ev0rxU5UH2/pT4wJCfxwocmqaRr6UYmrtZmND89X0KigoFD/XSeVv jwBRNjPAubK9/k5NoRrYqztM9W6sJqrH8+UWZ1Idd/DdmogJh0gNC0+N42Za9yBRURfIdKSb B3JfpUqcWwE7vUaYrHG1nw54pLUoPG6sAA7Mehl3nd4pZUALHwARAQABzSREYXZpZCBIaWxk ZW5icmFuZCA8ZGF2aWRAcmVkaGF0LmNvbT7CwZgEEwEIAEICGwMGCwkIBwMCBhUIAgkKCwQW AgMBAh4BAheAAhkBFiEEG9nKrXNcTDpGDfzKTd4Q9wD/g1oFAl8Ox4kFCRKpKXgACgkQTd4Q 9wD/g1oHcA//a6Tj7SBNjFNM1iNhWUo1lxAja0lpSodSnB2g4FCZ4R61SBR4l/psBL73xktp rDHrx4aSpwkRP6Epu6mLvhlfjmkRG4OynJ5HG1gfv7RJJfnUdUM1z5kdS8JBrOhMJS2c/gPf wv1TGRq2XdMPnfY2o0CxRqpcLkx4vBODvJGl2mQyJF/gPepdDfcT8/PY9BJ7FL6Hrq1gnAo4 3Iv9qV0JiT2wmZciNyYQhmA1V6dyTRiQ4YAc31zOo2IM+xisPzeSHgw3ONY/XhYvfZ9r7W1l pNQdc2G+o4Di9NPFHQQhDw3YTRR1opJaTlRDzxYxzU6ZnUUBghxt9cwUWTpfCktkMZiPSDGd KgQBjnweV2jw9UOTxjb4LXqDjmSNkjDdQUOU69jGMUXgihvo4zhYcMX8F5gWdRtMR7DzW/YE BgVcyxNkMIXoY1aYj6npHYiNQesQlqjU6azjbH70/SXKM5tNRplgW8TNprMDuntdvV9wNkFs 9TyM02V5aWxFfI42+aivc4KEw69SE9KXwC7FSf5wXzuTot97N9Phj/Z3+jx443jo2NR34XgF 89cct7wJMjOF7bBefo0fPPZQuIma0Zym71cP61OP/i11ahNye6HGKfxGCOcs5wW9kRQEk8P9 M/k2wt3mt/fCQnuP/mWutNPt95w9wSsUyATLmtNrwccz63XOwU0EVcufkQEQAOfX3n0g0fZz Bgm/S2zF/kxQKCEKP8ID+Vz8sy2GpDvveBq4H2Y34XWsT1zLJdvqPI4af4ZSMxuerWjXbVWb T6d4odQIG0fKx4F8NccDqbgHeZRNajXeeJ3R7gAzvWvQNLz4piHrO/B4tf8svmRBL0ZB5P5A 2uhdwLU3NZuK22zpNn4is87BPWF8HhY0L5fafgDMOqnf4guJVJPYNPhUFzXUbPqOKOkL8ojk CXxkOFHAbjstSK5Ca3fKquY3rdX3DNo+EL7FvAiw1mUtS+5GeYE+RMnDCsVFm/C7kY8c2d0G NWkB9pJM5+mnIoFNxy7YBcldYATVeOHoY4LyaUWNnAvFYWp08dHWfZo9WCiJMuTfgtH9tc75 7QanMVdPt6fDK8UUXIBLQ2TWr/sQKE9xtFuEmoQGlE1l6bGaDnnMLcYu+Asp3kDT0w4zYGsx 5r6XQVRH4+5N6eHZiaeYtFOujp5n+pjBaQK7wUUjDilPQ5QMzIuCL4YjVoylWiBNknvQWBXS lQCWmavOT9sttGQXdPCC5ynI+1ymZC1ORZKANLnRAb0NH/UCzcsstw2TAkFnMEbo9Zu9w7Kv AxBQXWeXhJI9XQssfrf4Gusdqx8nPEpfOqCtbbwJMATbHyqLt7/oz/5deGuwxgb65pWIzufa N7eop7uh+6bezi+rugUI+w6DABEBAAHCwXwEGAEIACYCGwwWIQQb2cqtc1xMOkYN/MpN3hD3 AP+DWgUCXw7HsgUJEqkpoQAKCRBN3hD3AP+DWrrpD/4qS3dyVRxDcDHIlmguXjC1Q5tZTwNB boaBTPHSy/Nksu0eY7x6HfQJ3xajVH32Ms6t1trDQmPx2iP5+7iDsb7OKAb5eOS8h+BEBDeq 3ecsQDv0fFJOA9ag5O3LLNk+3x3q7e0uo06XMaY7UHS341ozXUUI7wC7iKfoUTv03iO9El5f XpNMx/YrIMduZ2+nd9Di7o5+KIwlb2mAB9sTNHdMrXesX8eBL6T9b+MZJk+mZuPxKNVfEQMQ a5SxUEADIPQTPNvBewdeI80yeOCrN+Zzwy/Mrx9EPeu59Y5vSJOx/z6OUImD/GhX7Xvkt3kq Er5KTrJz3++B6SH9pum9PuoE/k+nntJkNMmQpR4MCBaV/J9gIOPGodDKnjdng+mXliF3Ptu6 3oxc2RCyGzTlxyMwuc2U5Q7KtUNTdDe8T0uE+9b8BLMVQDDfJjqY0VVqSUwImzTDLX9S4g/8 kC4HRcclk8hpyhY2jKGluZO0awwTIMgVEzmTyBphDg/Gx7dZU1Xf8HFuE+UZ5UDHDTnwgv7E th6RC9+WrhDNspZ9fJjKWRbveQgUFCpe1sa77LAw+XFrKmBHXp9ZVIe90RMe2tRL06BGiRZr jPrnvUsUUsjRoRNJjKKA/REq+sAnhkNPPZ/NNMjaZ5b8Tovi8C0tmxiCHaQYqj7G2rgnT0kt WNyWQQ== Organization: Red Hat In-Reply-To: <20250704062602.33500-5-lizhe.67@bytedance.com> X-Mimecast-Spam-Score: 0 X-Mimecast-MFC-PROC-ID: ZQFknJkPIEyjkmSlaQbUPNrNFYaLoAF1hdn0K1PmK_g_1751618781 X-Mimecast-Originator: redhat.com Content-Language: en-US Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Rspam-User: X-Rspamd-Server: rspam12 X-Rspamd-Queue-Id: 7467C4000B X-Stat-Signature: a36oiyeqd7ygqadpsjyxjz6c1x7uhmrd X-HE-Tag: 1751618786-623200 X-HE-Meta: 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 r/u++7cw qom01sxanO1hrOfkijO9QlPrtEooncVVVGPwH72/3byHuxEooFIu/0V+mzT8YDJdCLqwQmLfgrfxLhVicknZzxsnXacL1dMgeKzE6AFxu8irAPfTT2Z/fpByIRx5A7+oZhz+RPGvTjzDsauRzyml6Fk5oQtLfc6Rm4VyS6ySWoxw3lklibivXdD5E9uT81ipRDgsDp1nR0KaliL3QdUdNBfPCWioXvEVfodOg94uUx7Rbc/AQLJ+/DWvOcup7r6hhsOHfM2tYWIu3PNaVSTnp/r3bGpfUulP4UFYvWDTiMTCRshiC5J/RjVZ6wm3eHZRe/S9UuKWnaMgOAxf9w8Xj6/pk0THcNDH4a6x0uALqS3yMT31Xdb2v3eJFMB7PE9PLCHnT5nrohl+NXU+r/nIndyax+Y8HkzLmSC70/MIpy4vuchfGFso2wuIgYYcJOclvEx8UQN2ZLu4hYeAeJg7Sy6JHC0AiO3DREkkBg5Yx5cf/aFM= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 04.07.25 08:26, lizhe.67@bytedance.com wrote: > From: Li Zhe > > Introduce a new member has_rsvd for struct vfio_dma. This member is > used to indicate whether there are any reserved or invalid pfns in > the region represented by this vfio_dma. If it is true, it indicates > that there is at least one pfn in this region that is either reserved > or invalid. > > Signed-off-by: Li Zhe > --- > drivers/vfio/vfio_iommu_type1.c | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/drivers/vfio/vfio_iommu_type1.c b/drivers/vfio/vfio_iommu_type1.c > index b770eb1c4e07..13c5667d431c 100644 > --- a/drivers/vfio/vfio_iommu_type1.c > +++ b/drivers/vfio/vfio_iommu_type1.c > @@ -92,6 +92,7 @@ struct vfio_dma { > bool iommu_mapped; > bool lock_cap; /* capable(CAP_IPC_LOCK) */ > bool vaddr_invalid; > + bool has_rsvd; /* has 1 or more rsvd pfns */ > struct task_struct *task; > struct rb_root pfn_list; /* Ex-user pinned pfn list */ > unsigned long *bitmap; > @@ -774,6 +775,7 @@ static long vfio_pin_pages_remote(struct vfio_dma *dma, unsigned long vaddr, > } > > out: > + dma->has_rsvd |= rsvd; > ret = vfio_lock_acct(dma, lock_acct, false); > > unpin_out: Reviewed-by: David Hildenbrand -- Cheers, David / dhildenb