On 08/07/15 11:56, Anton Blanchard wrote: > Hi Sam, > >> Older big-endian ppc64 kernels don't include the FIXUP_ENDIAN check, >> meaning if we kexec from a little-endian kernel the target kernel will >> fail to boot. >> Returning to big-endian before we enter the target kernel ensures that >> the target kernel can boot whether or not it includes FIXUP_ENDIAN. > > Thanks! > > I wonder if we can do something simpler, and always enter via rfid. > Avoids the need for the endian trampoline. Something like: > > mtsrr0 r4 > > mfmsr r5 > clrrdi r5,r5,1 /* Clear MSR_LE */ > mtsrr1 r5 > > li r5,0 > > rfid > > Anton >
Ah that's a neat idea, I'll test and send a V2. Cheers, Sam -- ----------- LTC Ozlabs IBM _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
