From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from verein.lst.de (verein.lst.de [213.95.11.211]) (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 4DDD07C for ; Fri, 19 May 2023 12:59:02 +0000 (UTC) Received: by verein.lst.de (Postfix, from userid 2407) id 725BF68C7B; Fri, 19 May 2023 14:58:57 +0200 (CEST) Date: Fri, 19 May 2023 14:58:57 +0200 From: Christoph Hellwig To: Andrew Cooper Cc: Christoph Hellwig , Marek =?iso-8859-1?Q?Marczykowski-G=F3recki?= , Juergen Gross , Stefano Stabellini , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , x86@kernel.org, "H. Peter Anvin" , Ben Skeggs , Karol Herbst , Lyude Paul , xen-devel@lists.xenproject.org, iommu@lists.linux.dev, linux-kernel@vger.kernel.org, nouveau@lists.freedesktop.org Subject: Re: [PATCH 2/4] x86: always initialize xen-swiotlb when xen-pcifront is enabling Message-ID: <20230519125857.GA6994@lst.de> References: <20230518134253.909623-1-hch@lst.de> <20230518134253.909623-3-hch@lst.de> <20230519040405.GA10818@lst.de> <20230519124118.GA5869@lst.de> <8617570c-6dc4-74f5-7418-98f04f7e0ece@citrix.com> Precedence: bulk X-Mailing-List: iommu@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <8617570c-6dc4-74f5-7418-98f04f7e0ece@citrix.com> User-Agent: Mutt/1.5.17 (2007-11-01) On Fri, May 19, 2023 at 01:49:46PM +0100, Andrew Cooper wrote: > > The alternative would be to finally merge swiotlb-xen into swiotlb, in > > which case we might be able to do this later. Let me see what I can > > do there. > > If that is an option, it would be great to reduce the special-cashing. I think it's doable, and I've been wanting it for a while. I just need motivated testers, but it seems like I just found at least two :)