From mboxrd@z Thu Jan 1 00:00:00 1970 From: Joerg Roedel Subject: Re: [RFC PATCH 2/6] drivers core: Add I/O ASID allocator Date: Thu, 22 Nov 2018 09:38:14 +0100 Message-ID: <20181122083814.GA1586@8bytes.org> References: <20181019181158.2395-1-jean-philippe.brucker@arm.com> <20181019181158.2395-3-jean-philippe.brucker@arm.com> <20181112144039.GA25808@8bytes.org> <8f17757a-c657-aab9-a6a0-fb0cc9c610a8@arm.com> <62f05552-df46-6e12-10ed-820429dfda59@amd.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Content-Disposition: inline In-Reply-To: <62f05552-df46-6e12-10ed-820429dfda59-5C7GfCeVMHo@public.gmane.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: iommu-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org Errors-To: iommu-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org To: "Koenig, Christian" Cc: "kevin.tian-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org" , "rafael-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org" , Jean-Philippe Brucker , "gregkh-hQyY1W1yCW8ekmWlsbkhG0B+6BGkLq7r@public.gmane.org" , "will.deacon-5wv7dgnIgG8@public.gmane.org" , "alex.williamson-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org" , "iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org" , "robin.murphy-5wv7dgnIgG8@public.gmane.org" List-Id: iommu@lists.linux-foundation.org On Wed, Nov 21, 2018 at 07:10:20PM +0000, Koenig, Christian wrote: > All of that is completely unrelated to IOMMU, but when IOMMU is enabled > you need to use the same allocator because all use cases use the same ID > space. Okay, I see. Is there ever a case where we can have multiple PASIDs for one mm_struct? Regards, Joerg