From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pj1-f72.google.com (mail-pj1-f72.google.com [209.85.216.72]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 5B53147F2D5 for ; Wed, 23 Sep 2026 22:42:53 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.216.72 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790203374; cv=none; b=ehk3+LKbNiui+QMPhXXRPj1Bv5lWTbj6Ads3pyct5//KHYkNyxf4UkT2GAmezfEwpzIztrARtV9qM1KuQhZWcVC/SzbMT+vh+igytSx42AfEC640RO4ytLrZLEUf8XuJ94P741vMHnb+Y2ZcnNzMHqs3ORkvpVpWtz5GgyP9MGQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790203374; c=relaxed/simple; bh=XC0GtZzu0BD86oQ6ghzNMhSkH0mMeg+u7BsmzLp0cIw=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=FSqRlU4ksBBjBiotznDgo+OZRK7WXDC1U5n7xM5aRWR6FCAYKiqnOLA9OAXPc3Ddmmo0PcYGWK7goUsbmz2XN/ed2XTcnIKBg32Al5QmFtktOGBpzuk24JU/yLdpoRqiqi0qb+4xnInd0YImHR20vWAogHkvbILjun5cBKd6O4A= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--seanjc.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=Efy9i6Tq; arc=none smtp.client-ip=209.85.216.72 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flex--seanjc.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="Efy9i6Tq" Received: by mail-pj1-f72.google.com with SMTP id 98e67ed59e1d1-39d8646b10eso1074734a91.1 for ; Wed, 23 Sep 2026 15:42:53 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20251104; t=1790203372; x=1790808172; darn=vger.kernel.org; h=content-type:cc:to:from:subject:message-id:references:mime-version :in-reply-to:date:from:to:cc:subject:date:message-id:reply-to :content-type; bh=c4ROB5gmPay6sdQJPjpG61DXTR2zRREmvWIvdqy7Ui4=; b=Efy9i6TqcDJ8YqaJzlDjuCyPwIaLyKS2O9ovCaahkcOfUfw6fBjKXjGsZJxgmIYvfL +ry2BkIWgBmHvvLFso3ZATjr5Ub2nz4RniCbWEwvHx7gtSvqfz0RQqoaSLyHHKr+7cAg fCPynqUX7Bb9fgSAVlw6iIJs08XGw2zX4LQGjdLwkYCaH1slKctwv43/dxQJ5fwr5qlK 3wguolRgh/3ajD/pELswggZC07wCJZ7S8jOUJ/klp/L0Z8QNORQ5nW1tC+43G/7752xM VvPWetDskQ2Td3ZeLBr3OoSizfwykLv7LPxq3KRZhYRIyiLC+bPUnb5JoFg/+gxFbPSe 2rPg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20260707; t=1790203372; x=1790808172; h=content-type:cc:to:from:subject:message-id:references:mime-version :in-reply-to:date:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to:content-type; bh=c4ROB5gmPay6sdQJPjpG61DXTR2zRREmvWIvdqy7Ui4=; b=O2ZHvkt0folcY7hRr6ShkIndl0kR+4RdmoahYn01uwAeWEBURhxohmAHfFkxMyEzrM 4SXaGd65cR1BoLLn9NKHqQzuQgNAd7ifiwtB4VcaLLdUZsg/YqbtjlBNunJ+zbD33CIr rGSDQjZczrmoMxpDplDrE3gn2v0hswnXTSpF+yUaVTU2F42UNIP+FmvAsssfp1jAp81b 33w0OC2eVOulbdfNmSQCmgN4VR3W9zyAZbhiIMhmY2lKVglF8Cbdu8G8KsgLtDL8GXym ie+XP0ZQivevFoDow/P0TcFqyKYdG7jal++9AlRkFoYNZOC1Mau1bpzf/jTGuAx3rhT4 8lqw== X-Forwarded-Encrypted: i=1; AKwUvBxiOWOCK1efzWZ3S4XZECd+lmgXtlnfC5plX1WD189WUbdAnkcF206f1I9UDFA1kpT3Xmo9vQs=@vger.kernel.org X-Gm-Message-State: AFuF++kKxQNgyumOdHh/fx4WkXe2qc5Pq03wcdOPSzMoAvYfi27ymPqm /wC11d1h09I92kK89+uWQTvxzRPzxMtdH0V9lkToF3W3kX1SbEnCOwkwU0lLZN7+8RT72jI7qzf bMwGABw== X-Received: from pjbbh7.prod.google.com ([2002:a17:90b:487:b0:3a0:8315:fa7b]) (user=seanjc job=prod-delivery.src-stubby-dispatcher) by 2002:a17:90b:3f87:b0:398:a486:81ec with SMTP id 98e67ed59e1d1-3a0985b8f01mr435176a91.11.1790203372353; Wed, 23 Sep 2026 15:42:52 -0700 (PDT) Date: Wed, 23 Sep 2026 15:42:51 -0700 In-Reply-To: <6-v7-c6d30e8ce1e4+3dfa6-mlx5st_jgg@nvidia.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <0-v7-c6d30e8ce1e4+3dfa6-mlx5st_jgg@nvidia.com> <6-v7-c6d30e8ce1e4+3dfa6-mlx5st_jgg@nvidia.com> Message-ID: Subject: Re: [PATCH v7 06/10] vfio: selftests: Allow drivers to specify required region size From: Sean Christopherson To: Jason Gunthorpe Cc: Alex Williamson , David Matlack , 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 , Steffen Eiden , Shuah Khan , Suzuki K Poulose , Tariq Toukan , Zenghui Yu , patches@lists.linux.dev Content-Type: text/plain; charset="us-ascii" On Mon, Sep 21, 2026, 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 > --- The KVM test still runs, and in David I trust: Acked-by: Sean Christopherson