Messages in this thread | | | Subject | Re: [PATCH] ACPI/PPTT: Handle architecturally unknown cache types | From | Jeremy Linton <> | Date | Wed, 12 Sep 2018 10:39:34 -0500 |
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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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