On Wed, 2014-11-12 at 11:09 +0530, Aneesh Kumar K.V wrote: > Michael Neuling <mi...@neuling.org> writes: > > > On Sun, 2014-11-02 at 20:02 +0530, Aneesh Kumar K.V wrote: > >> Runtime disable transactional memory feature looking at pa-features > >> device tree entry. We need to do this so that we can run a kernel > >> built with TM config in PR mode. > > > > I'm happy to turn this off but why do we need to do this in PR mode? > > Can you explain this in the commit message. > > Hmm, that commit message needs an update. I initially did the patch for > P8 PR support and wanted a mechanism to disable TM. Alex added basic TM > support for PR mode after that. So we can drop the PR part of the > commit message. > > Michael Ellerman, > > Let me know if you want me to send an updated version with the those > part of the commit message dropped
How about: powerpc: Disable CPU_FTR_TM if TM is disabled by firmware Firmware is allowed to communicate to us via the "ibm,pa-features" property that TM (Transactional Memory) support is disabled. Currently this doesn't happen on any platform we're aware of, but we should honor it anyway. cheers _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
