On 12/09/2017 10:42 PM, Florian Weimer wrote: >> My only nit with this is whether it is the *right* interface. The >> signal vs. XSAVE state thing is pretty x86 specific and I doubt >> that this will be the last feature that we encounter that needs >> special signal behavior. > > The interface is not specific to XSAVE. To generic code, only the > two signal mask manipulation functions are exposed. And I expect > that we're going to need that for other (non-x86) implementations > because they will have the same issue because the signal handler > behavior will be identical. Let's check with the other implementation... Ram, this is a question about the signal handler behavior on POWER. I thought you ended up having different behavior in signal handlers than x86. In any case, I think the question still stands: Do we want this to be pkeys-only, or build it so that it can be used for MPX and any future XSAVE features that need non-init values when entering a signal handler.
