Venki Pallipadi <[EMAIL PROTECTED]> writes: > Checking the manual for this. You are right, we had missed some steps here. > Actually, manual says on MP, PAT MSR on all CPUs must be consistent (even when > they are not really using it in their page tables. > So, this will change the init and shutdown parts significantly and there may > be > some challenges with CPU offline and KEXEC. We will redo this part in next > iteration.
Well the normal kexec path is no worse then reboot. The kdump path is a mess but only a minor one, and with us only changing the UC- case we can probably just ignore it and leave the system started with that pat register set to WC :) What we are doing really should be no worse the MTRR setup except that disabling it at reboot is polite. CPU online and offline that is weird, but so far it is always weird, and I don't think ever quite correct. Eric -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
