Messages in this thread | | | From | "Zhang, Rui" <> | Subject | Re: [PATCH] intel_idle: Add RaptorLake support | Date | Sun, 20 Aug 2023 09:20:32 +0000 |
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On Sat, 2023-08-19 at 21:41 +0200, Guillaume Martres wrote: > On 1/19/23 17:13, Zhang, Rui wrote: > > On Thu, 2023-01-19 at 08:02 +0100, Álvaro Fernández Rojas wrote: > > > This patch adds RaptorLake support to the intel_idle driver. > > > > > > Since RaptorLake and AlderLake C-state are characteristics the > > > same, > > > we use > > > AlderLake C-states tables for RaptorLake as well. > > > > RPL and ADL have same cstates and use the same mwait hints, but the > > latency of each c-state are still different on different platforms. > > So we can not just duplicate the ADL table on RPL. > > > > There is an effort ongoing that measures the latency of each > > cstate on the RPL platforms. And based on the measurement result, > > we > > can decide if a new custom table is needed or we can just copy the > > previous platform. Hopefully we will have a patch in a couple of > > weeks. > > Hi, I just stumbled upon this patch series as I was wondering about > the > lack of support for Raptor Lake in intel_idle.
intel_idle support for RaptorLake, and also other platforms that don't have a custom table, is always there as long as we have BIOS support. The custom table is just an optimization.
> Your last message from > January mentions a future patch, is it available anywhere or is this > still future work? >
This is still work in progress because there are still some open questions that we cannot answer from our measurement, and the table is not finalized yet.
thanks, rui
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