From: "'Joerg Roedel'" <jroedel@suse.de>
To: "Deucher, Alexander" <Alexander.Deucher@amd.com>
Cc: "'Joerg Roedel'" <joro@8bytes.org>,
Bjorn Helgaas <bhelgaas@google.com>,
"linux-pci@vger.kernel.org" <linux-pci@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Daniel Drake <drake@endlessm.com>,
"Nath, Arindam" <Arindam.Nath@amd.com>
Subject: Re: [PATCH] PCI: Blacklist AMD Stoney GPU devices for ATS
Date: Tue, 28 Mar 2017 22:56:16 +0200 [thread overview]
Message-ID: <20170328205616.GR8329@suse.de> (raw)
In-Reply-To: <BN6PR12MB16527AD3EF2DDA863957B87EF7320@BN6PR12MB1652.namprd12.prod.outlook.com>
On Tue, Mar 28, 2017 at 08:37:01PM +0000, Deucher, Alexander wrote:
> The question is, could the problem stem from flushing an entity that
> didn't request it, or should that not matter? I guess it shouldn't
> matter otherwise we'd see this on other platforms like Carrizo as
> well.
What do you mean by "didn't request it"? The IOMMU driver only sends
io/tlb invalidations to devices it enabled ATS on.
Joerg
next prev parent reply other threads:[~2017-03-28 20:55 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-03-28 12:16 [PATCH] PCI: Blacklist AMD Stoney GPU devices for ATS Joerg Roedel
2017-03-28 20:18 ` Deucher, Alexander
2017-03-28 20:28 ` Joerg Roedel
2017-03-28 20:37 ` Deucher, Alexander
2017-03-28 20:56 ` 'Joerg Roedel' [this message]
2017-03-28 21:13 ` Deucher, Alexander
2017-03-28 22:26 ` 'Joerg Roedel'
2017-03-29 7:15 ` Nath, Arindam
2017-03-29 9:42 ` 'Joerg Roedel'
2017-03-29 9:47 ` Nath, Arindam
2017-03-29 16:21 ` Deucher, Alexander
2017-04-04 16:43 ` Bjorn Helgaas
2017-04-07 12:34 ` Joerg Roedel
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