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    SubjectRe: [-mm patch] enforce noreplace-smp in alternative_instructions()
    On Thu, Aug 23, 2007 at 04:16:17PM -0700, Jeremy Fitzhardinge wrote:
    > Frederik Deweerdt wrote:
    > > On Wed, Aug 22, 2007 at 02:06:48AM -0700, Andrew Morton wrote:
    > >
    > >> ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.23-rc3/2.6.23-rc3-mm1/
    > >>
    > >>
    > > Hi Jeremy,
    > >
    > > arch/i386/kernel/alternative.c:alternative_instructions() doesn't
    > > check for noreplace-smp before setting capability bits and freeing the
    > > __smp_locks section.
    > >
    > > Every call to alternatives_smp_unlock() checks for noreplace-smp
    > > beforehand, so remove the check from there.
    > >
    > > Boot tested on i386 with UP+noreplace-smp (lguest) and SMP (real hardware)
    > >
    >
    > Does this fix a real problem? Or is there just some redundancy?
    It does, see the mail to Andrew.
    > Wouldn't it be better to put the noreplace_smp test in one place?
    I agree, but I don't think it is doable (alt_smp_once comes to mind). I'll
    double check however.

    Thanks,
    Frederik
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