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SubjectRe: [PATCH] ACPI/PPTT: Handle architecturally unknown cache types
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Hi,


On 09/12/2018 09:41 AM, Jeffrey Hugo wrote:
> The HW designers have indicated that there is no sane way to provide
> sets/ways information to software, even on an informational basis (ie
> not for cache maintenance, but for performance optimizations). Therefore
> the firmware will not provide this information because it will be wrong.
>
> So, therefore, we should still be able to tell the user that a cache
> exists at the relevant level, and what size it is.  On the concerned
> system, we cannot do that currently.

Ok, so set the fields to zero in firmware node, and mark them valid.

That logically says that there isn't any set/way information for the
cache (which implies direct mapped).

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