* kdump boot failing with IVRS checksum failure
@ 2020-09-21 18:56 Jerry Snitselaar
2020-09-24 9:23 ` Joerg Roedel
0 siblings, 1 reply; 2+ messages in thread
From: Jerry Snitselaar @ 2020-09-21 18:56 UTC (permalink / raw)
To: iommu, linux-kernel, Joerg Roedel, Adrian Huang, Suravee Suthikulpanit
Hello Joerg,
We are seeing a kdump kernel boot failure in test on an HP DL325 Gen10
and it was tracked down to 387caf0b759a ("iommu/amd: Treat per-device
exclusion ranges as r/w unity-mapped regions"). Reproduced on 5.9-rc5
and goes away with revert of the commit. There is a follow on commit
that depends on this that was reverted as well 2ca6b6dc8512 ("iommu/amd:
Remove unused variable"). I'm working on getting system access and want
to see what the IVRS table looks like, but thought I'd give you heads
up.
Regards,
Jerry
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^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: kdump boot failing with IVRS checksum failure
2020-09-21 18:56 kdump boot failing with IVRS checksum failure Jerry Snitselaar
@ 2020-09-24 9:23 ` Joerg Roedel
0 siblings, 0 replies; 2+ messages in thread
From: Joerg Roedel @ 2020-09-24 9:23 UTC (permalink / raw)
To: Jerry Snitselaar; +Cc: iommu, linux-kernel
Hi Jerry,
On Mon, Sep 21, 2020 at 11:56:42AM -0700, Jerry Snitselaar wrote:
> We are seeing a kdump kernel boot failure in test on an HP DL325 Gen10
> and it was tracked down to 387caf0b759a ("iommu/amd: Treat per-device
> exclusion ranges as r/w unity-mapped regions"). Reproduced on 5.9-rc5
> and goes away with revert of the commit. There is a follow on commit
> that depends on this that was reverted as well 2ca6b6dc8512 ("iommu/amd:
> Remove unused variable"). I'm working on getting system access and want
> to see what the IVRS table looks like, but thought I'd give you heads
> up.
Thanks for looking into this, we really need to find the root-cause to
avoid the revert.
Thanks,
Joerg
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iommu@lists.linux-foundation.org
https://lists.linuxfoundation.org/mailman/listinfo/iommu
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