| From | "Schander, Johanna 'Mimoja' Amelie" <> | Subject | Re: [PATCH RFC v8 00/56] Add AMD Secure Nested Paging (SEV-SNP) Hypervisor Support | Date | Thu, 3 Aug 2023 18:27:56 +0000 |
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We discovered that the kdump crashkernel would not work with our SEV- SNP configuration.
After reading the device table from the previour kernel we would see a lot of AMD-Vi: Completion-Wait loop timed out errors and finally crash: Kernel panic - not syncing: timer doesn't work through Interrupt- remapped IO-APIC
We found that disabeling SNP in the outgoing (crashing) kernel would enable the crashkernel to take over the iommu config and boot from there.
We opened a PR over on github against the rfc-v9 branch to discuss the issue: https://github.com/AMDESE/linux/pull/5
Cheers Johanna
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