Re: [linux-next:master] [x86/module] 6661cae1aa: WARNING:at_arch/x86/mm/pat/set_memory.c:#__cpa_process_fault

[Dave Hansen]

On 10/14/24 08:44, Mike Rapoport wrote:
>> To me, it seems like execmem itself should be excluding all HIGHMEM=y
>> builds or _maybe_ all 32-bit builds because execmem has the built-in
>> assumption that vmalloc memory is in the direct map.
> I presume you mean execmem cache here, as execmem in general should work
> everywhere.

Yeah, just the new execmem cache code from the new series.

> After discussion with Christoph about how to define
> execmem_fill_trapping_insns(), I'm going to add a Kconfig opt-in option
> that will guard the entire execmem cache implementation and have it
> selected by x86_64.

Seems fine to me, as long as we're clear in the changelog why it's there.