Re: [RFC 1/3] powernv/cpuidle : Support for pre-entry and post exit of stop state in firmware

2020-05-02 Thread Nicholas Piggin
Excerpts from Abhishek's message of April 30, 2020 3:52 pm: > Hi Nick, > > Have you posted out the kernel side of "opal v4" patchset? > I could only find the opal patchset. I just posted some new ones. I have some change sfor the cpuidle side but I haven't really looked to see what needs

Re: [RFC 1/3] powernv/cpuidle : Support for pre-entry and post exit of stop state in firmware

2020-04-29 Thread Abhishek
Hi Nick, Have you posted out the kernel side of "opal v4" patchset? I could only find the opal patchset. Thanks, Abhishek On 04/28/2020 06:38 AM, Nicholas Piggin wrote: Thanks for picking this up and pushing it along. I do plan to come back and take another look at it all, but what we do need

Re: [RFC 1/3] powernv/cpuidle : Support for pre-entry and post exit of stop state in firmware

2020-04-27 Thread Nicholas Piggin
Thanks for picking this up and pushing it along. I do plan to come back and take another look at it all, but what we do need to do first is get a coherent approach to this proposed new calling convention and OS ops. It's fine to work on this in the meantime, but to start merging things my idea

Re: [RFC 1/3] powernv/cpuidle : Support for pre-entry and post exit of stop state in firmware

2020-04-27 Thread Gautham R Shenoy
Hi Abhishek, On Sun, Apr 26, 2020 at 09:10:25PM -0500, Abhishek Goel wrote: > This patch provides kernel framework fro opal support of save restore > of sprs in idle stop loop. Opal support for stop states is needed to > selectively enable stop states or to introduce a quirk quickly in case > a

[RFC 1/3] powernv/cpuidle : Support for pre-entry and post exit of stop state in firmware

2020-04-26 Thread Abhishek Goel
This patch provides kernel framework fro opal support of save restore of sprs in idle stop loop. Opal support for stop states is needed to selectively enable stop states or to introduce a quirk quickly in case a buggy stop state is present. We make a opal call from kernel if firmware-stop-support