Messages in this thread | | | Subject | Re: [PATCH v7 00/13] Support PPTT for ARM64 | From | Sudeep Holla <> | Date | Thu, 1 Mar 2018 12:06:15 +0000 |
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Hi Jeremy,
On 28/02/18 22:06, Jeremy Linton wrote: > ACPI 6.2 adds the Processor Properties Topology Table (PPTT), which is > used to describe the processor and cache topology. Ideally it is > used to extend/override information provided by the hardware, but > right now ARM64 is entirely dependent on firmware provided tables. > > This patch parses the table for the cache topology and CPU topology. > When we enable ACPI/PPTT for arm64 we map the physical_id to the > PPTT node flagged as the physical package by the firmware. > This results in topologies that match what the remainder of the > system expects. To avoid inverted scheduler domains we then > set the MC domain equal to the largest cache within the socket > below the NUMA domain. > I remember reviewing and acknowledging most of the cacheinfo stuff with couple of minor suggestions for v6. I don't see any Acked-by tags in this series and don't know if I need to review/ack any more cacheinfo related patches.
-- Regards, Sudeep
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