From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.16]) (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 0BD2E19E7ED for ; Wed, 23 Oct 2024 11:11:59 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.16 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1729681921; cv=none; b=NMdZXozf+FRQ+vYNFzv6RPlQ5/eMw9fFGWQnGaB2rvaL2u7KHxX6oMmholBjiLj+fNVBujGJQ8wa2XN/wemyiML8/J1LJ/rXc8chtSpZhNs4va1zOkgD/uhMP4J1xaMQEgqE5Q0Wa4Svj6t8tt6N/TTrN0hFiaYqLHQTE7TkdVg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1729681921; c=relaxed/simple; bh=7JStf212Hwpx69UkzBHWq0UfzruuX/4ktnWU08qVv7o=; h=Message-ID:Date:MIME-Version:Cc:Subject:To:References:From: In-Reply-To:Content-Type; b=pjRpCYiBY+o1LVjCHk91O3uSwejzCxulpB/kk5znjef+klZFA6SjT0cKeVt2ORMZ/VJ/PBn2AScyBBHnWDCTo6GFCiB4xCm7QFw6/WlmneLuh6ZhWIJM0INZifRsWeCqj8oreRQILoZSB7gPgXTnJg9u+14y+Kpgp83ZIogUaOM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com; spf=none smtp.mailfrom=linux.intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=V3lYhq5T; arc=none smtp.client-ip=198.175.65.16 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="V3lYhq5T" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1729681921; x=1761217921; h=message-id:date:mime-version:cc:subject:to:references: from:in-reply-to:content-transfer-encoding; bh=7JStf212Hwpx69UkzBHWq0UfzruuX/4ktnWU08qVv7o=; b=V3lYhq5T+Z56Ny6j02P0A3vTd9HuWulpzZlveIQOi2o6qHaIITtOopc9 sFPEWQ7rpTtvjZvvhXgqqCHBO9fHpVmo6RYPsdQLpS5sAnC/RIG2Id1DR +KopWVS5VbI+Ug9peXdSbOBaBSyvDLZMLjiJXoi6HDpmlRhEXCWbvyw+6 n0LjB8yf+hZ3nPQ5rjMXnmu86mDF5raX96DBCZpneDUze5p0RPdJJQz5+ /bL3J0Oht8rBCumrNoI5ailjrvCJB8s656OFWEW/MgZAcBuU1SN0e9ycA LWYP5TVUNmM0mOR0Vf7ykSaVJuqqX6Rlg/k5Tucp2cxH8Hptso7A3rGxa Q==; X-CSE-ConnectionGUID: CqSh/fSnSpOcjNulxnhvXg== X-CSE-MsgGUID: BrC0+jdsQwC5/qe2gG0vdQ== X-IronPort-AV: E=McAfee;i="6700,10204,11222"; a="29378584" X-IronPort-AV: E=Sophos;i="6.11,199,1725346800"; d="scan'208";a="29378584" Received: from fmviesa003.fm.intel.com ([10.60.135.143]) by orvoesa108.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 23 Oct 2024 04:12:00 -0700 X-CSE-ConnectionGUID: x3lyqTHBSt+qTM8pHQY8XA== X-CSE-MsgGUID: pgIKe41RRIGQSytLEzQRNw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.11,225,1725346800"; d="scan'208";a="84139301" Received: from blu2-mobl.ccr.corp.intel.com (HELO [10.124.240.228]) ([10.124.240.228]) by fmviesa003-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 23 Oct 2024 04:11:57 -0700 Message-ID: <10b6180b-dbee-4c30-b835-6accf99af2ea@linux.intel.com> Date: Wed, 23 Oct 2024 19:11:54 +0800 Precedence: bulk X-Mailing-List: iommu@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Cc: baolu.lu@linux.intel.com, will@kernel.org, robin.murphy@arm.com, suravee.suthikulpanit@amd.com, jgg@ziepe.ca, yi.l.liu@intel.com, kevin.tian@intel.com, jacob.pan@linux.microsoft.com Subject: Re: [PATCH v4 03/12] iommu: Add new flag to explictly request PASID capable domain To: Vasant Hegde , iommu@lists.linux.dev, joro@8bytes.org References: <20241023104207.5894-1-vasant.hegde@amd.com> <20241023104207.5894-4-vasant.hegde@amd.com> Content-Language: en-US From: Baolu Lu In-Reply-To: <20241023104207.5894-4-vasant.hegde@amd.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 2024/10/23 18:41, Vasant Hegde wrote: > From: Jason Gunthorpe > > Introduce new flag (IOMMU_HWPT_ALLOC_PASID) to domain_alloc_users() ops. > If IOMMU supports PASID it will allocate domain. Otherwise return error. > In error path check for -EOPNOTSUPP and try to allocate non-PASID > domain so that DMA-API mode work fine for drivers which does not support > PASID as well. > > Also modify __iommu_group_alloc_default_domain() to call > iommu_paging_domain_alloc_flags() with appropriate flag when allocating > paging domain. > > Signed-off-by: Jason Gunthorpe > Co-developed-by: Vasant Hegde > Signed-off-by: Vasant Hegde > --- > drivers/iommu/iommu.c | 56 +++++++++++++++++++++++++++++------- > include/uapi/linux/iommufd.h | 8 ++++++ > 2 files changed, 53 insertions(+), 11 deletions(-) Reviewed-by: Lu Baolu Thanks, baolu