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Groups > linux.kernel > #1630837 > unrolled thread
| Started by | Samuel Sieb <samuel@sieb.net> |
|---|---|
| First post | 2017-04-25 20:00 +0200 |
| Last post | 2017-04-27 21:40 +0200 |
| Articles | 5 — 2 participants |
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Re: AMD IOMMU causing filesystem corruption Samuel Sieb <samuel@sieb.net> - 2017-04-25 20:00 +0200
Re: AMD IOMMU causing filesystem corruption Joerg Roedel <joro@8bytes.org> - 2017-04-26 12:20 +0200
Re: AMD IOMMU causing filesystem corruption Samuel Sieb <samuel@sieb.net> - 2017-04-26 23:40 +0200
Re: AMD IOMMU causing filesystem corruption Joerg Roedel <joro@8bytes.org> - 2017-04-26 23:50 +0200
Re: AMD IOMMU causing filesystem corruption Samuel Sieb <samuel@sieb.net> - 2017-04-27 21:40 +0200
| From | Samuel Sieb <samuel@sieb.net> |
|---|---|
| Date | 2017-04-25 20:00 +0200 |
| Subject | Re: AMD IOMMU causing filesystem corruption |
| Message-ID | <tAcUO-7ME-17@gated-at.bofh.it> |
On 04/07/2017 03:27 AM, Joerg Roedel wrote: > Also, please try the attached debug-diff on your kernel. It completly > disables the use of ATS in the amd-iommu driver. > I applied this patch to 4.11.0 rc8 and then stress tested the laptop with another kernel build while running graphical applications and there appears to be no damage to the filesystem. Is there any way to determine if ATS is enabled or disabled?
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| From | Joerg Roedel <joro@8bytes.org> |
|---|---|
| Date | 2017-04-26 12:20 +0200 |
| Message-ID | <tAsdb-UH-3@gated-at.bofh.it> |
| In reply to | #1630837 |
Hi Samuel, On Tue, Apr 25, 2017 at 10:55:24AM -0700, Samuel Sieb wrote: > On 04/07/2017 03:27 AM, Joerg Roedel wrote: > >Also, please try the attached debug-diff on your kernel. It completly > >disables the use of ATS in the amd-iommu driver. > > > I applied this patch to 4.11.0 rc8 and then stress tested the laptop > with another kernel build while running graphical applications and > there appears to be no damage to the filesystem. Is there any way > to determine if ATS is enabled or disabled? Great, thanks for testing the patch. The lspci tool should be able to tell you whether the ATS capability is enabled on the GPU. With a 'lspci -vvv -s <GPUDEV>" should give you that info. Joerg
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| From | Samuel Sieb <samuel@sieb.net> |
|---|---|
| Date | 2017-04-26 23:40 +0200 |
| Message-ID | <tACPg-7UA-13@gated-at.bofh.it> |
| In reply to | #1631345 |
On 04/26/2017 03:14 AM, Joerg Roedel wrote: > On Tue, Apr 25, 2017 at 10:55:24AM -0700, Samuel Sieb wrote: >> On 04/07/2017 03:27 AM, Joerg Roedel wrote: >>> Also, please try the attached debug-diff on your kernel. It completly >>> disables the use of ATS in the amd-iommu driver. >>> >> I applied this patch to 4.11.0 rc8 and then stress tested the laptop >> with another kernel build while running graphical applications and >> there appears to be no damage to the filesystem. Is there any way >> to determine if ATS is enabled or disabled? > > Great, thanks for testing the patch. The lspci tool should be able to > tell you whether the ATS capability is enabled on the GPU. With a > 'lspci -vvv -s <GPUDEV>" should give you that info. > This test was done with the patch that always disables ATS. Which is the current patch to selectively disable it? The last patch I tried didn't seem to work.
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| From | Joerg Roedel <joro@8bytes.org> |
|---|---|
| Date | 2017-04-26 23:50 +0200 |
| Message-ID | <tACYV-81s-5@gated-at.bofh.it> |
| In reply to | #1631739 |
On Wed, Apr 26, 2017 at 02:31:40PM -0700, Samuel Sieb wrote: > This test was done with the patch that always disables ATS. Which > is the current patch to selectively disable it? The last patch I > tried didn't seem to work. Its [PATCH v2] PCI: Add ATS-disable quirk for AMD Stoney GPUs You should have received it as you were on the Cc list. Joerg
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| From | Samuel Sieb <samuel@sieb.net> |
|---|---|
| Date | 2017-04-27 21:40 +0200 |
| Message-ID | <tAXqF-54u-7@gated-at.bofh.it> |
| In reply to | #1631748 |
On 04/26/2017 02:43 PM, Joerg Roedel wrote: > On Wed, Apr 26, 2017 at 02:31:40PM -0700, Samuel Sieb wrote: >> This test was done with the patch that always disables ATS. Which >> is the current patch to selectively disable it? The last patch I >> tried didn't seem to work. > > Its > > [PATCH v2] PCI: Add ATS-disable quirk for AMD Stoney GPUs > > > You should have received it as you were on the Cc list. > Yes, but there was some discussion about it, so I wanted to make sure that was the latest. I can verify that the patch works. ATS is disabled and there is no filesystem corruption.
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