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    SubjectRe: 2.6.18-mm2

    * Andi Kleen <ak@suse.de> wrote:

    > On Friday 29 September 2006 22:14, Ingo Molnar wrote:
    > >
    > > * Andi Kleen <ak@suse.de> wrote:
    > >
    > > > BTW I was planning to make LOCAL_APIC unconditional on i386 too like
    > > > on x86-64.
    > >
    > > please dont - embedded doesnt need it most of the time.
    >
    > What do you mean with not need? Local APIC is an infinitely better
    > interface than PIC and faster. On embedded too this makes a lot of
    > sense.

    it's just not present or hardware-disabled.

    > And a lot of modern systems don't even work anymore without APIC
    > enabled because Windows uses it and the BIOS haven't been tested
    > without it (e.g. you often find totally broken code paths in the AML
    > for PIC mode)
    >
    > The code size also isn't a good argument because the delta
    > isn't that big:
    >
    > text data bss dec hex filename
    > 3303894 694980 436420 4435294 43ad5e obj32-up/vmlinux
    > 3266532 665732 402372 4334636 42242c obj32-up-noapic/vmlinux
    >
    > ~63K.

    63K???? You've got to be kidding. That's huge. That's ~10% of the
    minconfig kernel. Even 1K would be bad. We did config hacks for half a K
    win. Please ... dont cripple the i686 kernel.

    Ingo
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