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SubjectRe: [PATCH v4] x86/mm/ident_map: On UV systems, use gbpages only where full GB page should be mapped.
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On 3/29/24 13:45, Ingo Molnar wrote:
> Just to clarify, we have the following 3 upstream (and soon to be upstream) versions:
>
> v1: pre-d794734c9bbf kernels
> v2: d794734c9bbf x86/mm/ident_map: Use gbpages only where full GB page should be mapped.
> v3: c567f2948f57 Revert "x86/mm/ident_map: Use gbpages only where full GB page should be mapped."
>
> Where v1 and v3 ought to be the same in behavior.
>
> So how does the failure matrix look like on your systems? Is my
> understanding accurate:
>
>
> regular boot | regular kexec | nogbpages boot | nogbpages kexec boot
> ------------------------|---------------------------------------------------
> v1: OK | OK | OK | FAIL
> v2: OK | FAIL | FAIL | FAIL

Slight correction:

regular boot | regular kexec | nogbpages boot | nogbpages kexec boot
-----------------|---------------|----------------|------------------
v1: OK | OK | OK | FAIL
v2: OK | FAIL | OK | FAIL

Pavin.

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