Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932678AbZLEAUb (ORCPT ); Fri, 4 Dec 2009 19:20:31 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932614AbZLEAUa (ORCPT ); Fri, 4 Dec 2009 19:20:30 -0500 Received: from outbound-mail-150.bluehost.com ([67.222.38.40]:53499 "HELO outbound-mail-150.bluehost.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S932561AbZLEAU3 (ORCPT ); Fri, 4 Dec 2009 19:20:29 -0500 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=default; d=virtuousgeek.org; h=Received:Date:From:To:Cc:Subject:Message-ID:In-Reply-To:References:X-Mailer:Mime-Version:Content-Type:Content-Transfer-Encoding:X-Identified-User; b=ZYnb0cADdtj/ygFokW25AAtNNan1EiqYsqt5muYcYrqjKXcZ1QLVqsdqwRJTF9Da8O+Z7BGZpFNZSYBU7VgMBXaEAHL4/1P1r48XNX7wFhFkRghA3s4b7sHbswurkc+7; Date: Fri, 4 Dec 2009 16:19:47 -0800 From: Jesse Barnes To: Chris Wright Cc: Allen Kay , linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, matthew@wil.cx, chrisw@sous-sol.org, jeremy@goop.org, donald.d.dugger@intel.com, joerg.roedel@amd.com, dwmw2@infradead.org, iommu@lists.linux-foundation.org Subject: Re: [PATCH] pci: add pci_request_acs Message-ID: <20091204161947.67e18073@jbarnes-piketon> In-Reply-To: <20091204201521.GJ21174@sequoia.sous-sol.org> References: <1254936437-18577-1-git-send-email-allen.m.kay@intel.com> <20091204191754.GI21174@sequoia.sous-sol.org> <20091204201521.GJ21174@sequoia.sous-sol.org> X-Mailer: Claws Mail 3.7.2 (GTK+ 2.18.3; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Identified-User: {10642:box514.bluehost.com:virtuous:virtuousgeek.org} {sentby:smtp auth 75.111.28.251 authed with jbarnes@virtuousgeek.org} Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1132 Lines: 29 On Fri, 4 Dec 2009 12:15:21 -0800 Chris Wright wrote: > Commit ae21ee65e8bc228416bbcc8a1da01c56a847a60c "PCI: acs p2p upsteram > forwarding enabling" doesn't actually enable ACS. > > Add a function to pci core to allow an IOMMU to request that ACS > be enabled. The existing mechanism of using iommu_found() in the pci > core to know when ACS should be enabled doesn't actually work due to > initialization order; iommu has only been detected not initialized. > > Have Intel and AMD IOMMUs request ACS, and Xen does as well during > early init of dom0. > > Cc: Allen Kay > Cc: David Woodhouse > Cc: Jeremy Fitzhardinge > Cc: Joerg Roedel > Signed-off-by: Chris Wright Applied this one, thanks. -- Jesse Barnes, Intel Open Source Technology Center -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/