Michael Ellerman <m...@ellerman.id.au> writes: > Stewart Smith <stew...@linux.vnet.ibm.com> writes: > ... >> >> Slightly stupid question: should we be disabling these here or should >> Linux be better and deciding what states to use? >> >> I'm inclined to say this is a Linux problem as it should make the >> decision of what hardware feature to used based on the ones OPAL says >> *can* be used. > > Yeah I agree. > > Firmware shouldn't be implementing the policy around what states to use, > it should tell the operating system (which might be Linux) what states > are available and what their features are.
Yeah... I think I should work out somewhere to put this in the documentation, a kind of design philosophy we can point back to. > The exception to that would be that we have unfixable crash bugs in > existing kernels, in that case firmware might have to filter out states > that are known to cause those. s/in/with/ and *cough* stop11 for example. -- Stewart Smith OPAL Architect, IBM.
