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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 11BC9C9830B for ; Wed, 23 Sep 2026 18:26:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:In-Reply-To:Content-Type: MIME-Version:References:Message-ID:Subject:Cc:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=LNon7FG4gNvQZ8cTIn7dGZggjcYoEo+V3D2k9W/8Sxo=; b=V+ETkk+rWbAeue1WkPNUgbo4EU 1y6LB09kp2HOTN0YulXmC4uIlZrNg6O08jfW99liUKh6heCMmru2P5nnSDVSJ/I7zSbQauiMIPfxl YmRr3DpTXxPMBQuEvObPwLmLkbTPapRW/aDE2D8WA8Mqt2TjrsPCiLKOD/ZIF07fTaNr3pi6U5izI Q+XbBfh5DevKMvhzvLuTaY+0aMj8jqDJFVV4VayyHUXfCneMNaUFh7Rp6cq0hG4sFgGRcNOfuHmMH utdw8bBcUfLv4kYUS7Y6d9WWWwnVLBLvp3tO6DJ8mOfxHQyPimPeoHZ79OPfl2/gkt81mDm9L+8jG s1v2ObOw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1x9Rfg-00000009BT6-01Sx; Wed, 23 Sep 2026 18:26:20 +0000 Received: from desiato.infradead.org ([2001:8b0:10b:1:d65d:64ff:fe57:4e05]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1x9Rfe-00000009BSX-32Kk for linux-arm-kernel@bombadil.infradead.org; Wed, 23 Sep 2026 18:26:18 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=desiato.20200630; h=In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=LNon7FG4gNvQZ8cTIn7dGZggjcYoEo+V3D2k9W/8Sxo=; b=LQYwuuLn28NectpBBjT71+k5TF gLn0nd235miznlyBANzyEa1Hkvk5hT+QhY43LWH+PEf0rUcF75oXVqEE7XIct/HSW4HKAGA7ExVwQ 9avhN6dq+uIrvYDLgFil3zH3BAel3A933coDYuaMZFCoTmLSRZe5IZWaO0SjD5jWDimn67+BBI6C4 /ifZ9jacvoZuCOMfgxzUC12b33TDBQ2Vg4D8r59MDGn0/SwsJcm5MR4k80M3FsArAQImvSvJwKadw 37e2INnOZrA/fKTeKMaHkPR0OIOh2n5YYIITBYOD8Aqni2BgNUxKSrsS9qOdtyZz5mfrJpfwn+atR kYx+zLYw==; Received: from mail-pj2-x11.google.com ([2607:f8b0:4864:39::11]) by desiato.infradead.org with esmtps (Exim 4.99.2 #2 (Red Hat Linux)) id 1x9Rfc-0000000F9L1-0Cqr for linux-arm-kernel@lists.infradead.org; Wed, 23 Sep 2026 18:26:17 +0000 Received: by mail-pj2-x11.google.com with SMTP id d9443c01a7336-2d747f0135fso8717915ad.0 for ; Wed, 23 Sep 2026 11:26:14 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20251104; t=1790187972; x=1790792772; darn=lists.infradead.org; h=in-reply-to:content-disposition:content-type:mime-version :references:message-id:subject:cc:to:from:date:from:to:cc:subject :date:message-id:reply-to:content-type; bh=LNon7FG4gNvQZ8cTIn7dGZggjcYoEo+V3D2k9W/8Sxo=; b=KeKiaONoBVCorFwu3BZWoIouB9E6Y28hs4Nx30k0qeprNL2oOBjzFrBwrSTF9znCSA ZPG6VFRU1uGwZFAh6Zn7I7GHaGGnh58Rn+NSex2T2oX7LYB9U0Iai4gKYC3XwhixT38k 1sXQwHyj+3d9Ry7DbYSetrcBbNXyy2LHc1E7KiQoxS6SeIrop1O8hVU8DKOvJ/hWGbw+ pQ0rxYWE4oTIhmz/KHXbrNJQduxcWK9fqcD+B5iV6/YW7Z3xnRVQETSF1kiU5mHqaUb5 tZON6u5aso5pkhtZ420LDiQFp1HKcEFmu96b3mbMh7mHLisS6iFfw5KWyKsQ+TQiYJd3 2i+w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20260707; t=1790187972; x=1790792772; h=in-reply-to:content-disposition:content-type:mime-version :references:message-id:subject:cc:to:from:date:x-gm-gg :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to :content-type; bh=LNon7FG4gNvQZ8cTIn7dGZggjcYoEo+V3D2k9W/8Sxo=; b=KcujQ1NAT+ACkGh2yxh6ZAtUm/TAYEE3ocUfvyVG03OK9pmEGnvf3E1H9MqolEIpzV iYFOJXEtn6c1vtjrN+OUggdYKe6Jell6sQwxTNy3zxLqr88mPHobRAkqMRx26P+tGKxR Awk2tnIWi6tE/Clr3KmEYT83HxeCxw+eyepNJmeqna7tQ2dv4p7KEPsQJ7bL6psoLk61 JKCPI4bQIZCfMjSRRrFKTccxZAevNTHZfnZhmtjnRY/7u5Qn25beaL3C5Nhtbu8gY9C0 Vq/YDKHP44nwzJlUK5sqlPvzIFF7zYbf/WyvejKqpwAirEYCTMK2ZbbSl4bJEeA2xVkE c+CA== X-Forwarded-Encrypted: i=1; AKwUvBzaZFUMiwjRuf1LGpGcCmozBNiij262U5ufJ+7WiU5AKFeQh2w8iqyKY9j+/d0pm0Unb9jw5LEcjvntQL04/vXT@lists.infradead.org X-Gm-Message-State: AFuF++kIm5m3OKtdprJsmUtWqVXU5odJwIXeSfskQHnFpW6IUam8+7J8 KBJh6BdKCEfqiRtERdtCPsAGYWpeENcyQRhKigDU8GJAr5n3FC4h10D7PzMtetKLPQ== X-Gm-Gg: AYBFou0xQd8aGwygoap473fwtFUCAubrayIJ9JD/LGFxb+JVrKuJJDhBDSQvEekJjNM harLqBzJfHcBuhhwA9O8vJ0suxiPNmJCO2aFn0qGpywtX0XDzc2fSjx0tgEP4+SJbwFu7tLQgQC WFvul1R3zr6r469lNEVXVMkyFrR5XW8NWt9aPuppwC+iP05ToOvy8JS87zaSUydG6gl68rHQq9c dBe4+OroeqJQCN4aBLDy+GvIFgTY+gTOE+ZgB6FkpKCDWTvn4jF5y+jpvEGDlYXsRNe6On7hqC6 WapEItkkyBrwtH5FH3Udv1nsvSXh871ds9DdDSHKe1UUhLH2WmVr+V8UlT/9t8KrZj8wAd+7yB4 rF+2uPZipEc02QSnfoux+KgqUSwhIZEZ4E6o4yQj+lS4y7CPHmOyeuF0A5iRXKCoqxccwW9aQ+6 Vu9okx1R25jgp39owPb7EFpaQ42B/91n0ZGrauxucPArNc/RGNVW3OEB/UcZYQZtM5rIihiECzf 1bx3v1TiwqRw3N9YZvWl5+uYKsESDAP+1LfR1CcLnuR02zl+/o= X-Received: by 2002:a17:902:ef52:b0:2df:3b09:664 with SMTP id d9443c01a7336-2df69dcdbf3mr30657015ad.32.1790187971787; Wed, 23 Sep 2026 11:26:11 -0700 (PDT) Received: from google.com (132.200.185.35.bc.googleusercontent.com. [35.185.200.132]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2df6a5eea15sm15475075ad.64.2026.09.23.11.26.10 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 23 Sep 2026 11:26:10 -0700 (PDT) Date: Wed, 23 Sep 2026 18:26:06 +0000 From: David Matlack To: Jason Gunthorpe Cc: Alex Williamson , Fuad Tabba , Joey Gouly , kvm@vger.kernel.org, kvmarm@lists.linux.dev, Leon Romanovsky , linux-arm-kernel@lists.infradead.org, linux-kselftest@vger.kernel.org, linux-rdma@vger.kernel.org, Marc Zyngier , Mark Bloch , netdev@vger.kernel.org, Oliver Upton , Paolo Bonzini , Saeed Mahameed , Sean Christopherson , Steffen Eiden , Shuah Khan , Suzuki K Poulose , Tariq Toukan , Zenghui Yu , patches@lists.linux.dev Subject: Re: [PATCH v7 06/10] vfio: selftests: Allow drivers to specify required region size Message-ID: References: <0-v7-c6d30e8ce1e4+3dfa6-mlx5st_jgg@nvidia.com> <6-v7-c6d30e8ce1e4+3dfa6-mlx5st_jgg@nvidia.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <6-v7-c6d30e8ce1e4+3dfa6-mlx5st_jgg@nvidia.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260923_192616_198585_B1000336 X-CRM114-Status: UNSURE ( 9.91 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 2026-09-21 07:35 PM, Jason Gunthorpe wrote: > Add a region_size field to struct vfio_pci_driver_ops so drivers can > declare how much DMA-mapped region they need. The mlx5 driver will need > ~18MB for firmware pages. Existing drivers pass in the sizeof their state > struct. Since drivers all use only their declared state we can use the > value directly and remove the SZ_2M hard coding. > > Assisted-by: Claude:claude-opus-4.6 > Signed-off-by: Jason Gunthorpe Reviewed-by: David Matlack