* Re: regressions in iommu system with 5.10.37
[not found] <8893cfb2-d4e8-f3e9-e0b9-bbacf1220dca@m.interpipe.biz>
@ 2021-05-19 8:23 ` Greg KH
0 siblings, 0 replies; only message in thread
From: Greg KH @ 2021-05-19 8:23 UTC (permalink / raw)
To: Anatoli N.Chechelnickiy
Cc: stable@vger.kernel.org, regressions@lists.linux.dev,
baolu.lu@linux.intel.com, sashal@kernel.org
On Wed, May 19, 2021 at 08:01:29AM +0000, Anatoli N.Chechelnickiy wrote:
> Hi
>
> I'm sorry to report about regression in 5.10.37
>
> with
>
> CONFIG_IOMMU_IOVA=y
> CONFIG_IOMMU_API=y
> CONFIG_IOMMU_SUPPORT=y
> CONFIG_OF_IOMMU=y
> CONFIG_INTEL_IOMMU=y
> CONFIG_INTEL_IOMMU_SVM=y
> CONFIG_INTEL_IOMMU_DEFAULT_ON=y
> CONFIG_INTEL_IOMMU_FLOPPY_WA=y
>
> and iommu=on in grub.cfg
>
>
> All my dell r340 and all lenovo servers won't boot any more. Just black
> screen at once.
>
>
> with intel_iommu=on iommu=pt DELL R240 and Lenovo SR350 cat boot
>
> Older Lenovo cannot boot even with "intel_iommu=on iommu=pt" only with
> iommu=off in grub
>
> With iommu=off in grub all servers are booting well
>
> With 5.4.36 do not have this problem
>
>
> tested last 4 days with 10+ different servers(
Should be fixed with 5.10.38. If not, please let us know.
thanks,
greg k-h
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