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    SubjectRe: Linux 2.6.38-rc1 doesn't boot

    * H. Peter Anvin <h.peter.anvin@intel.com> wrote:

    > On 01/19/2011 12:12 AM, Shaohua Li wrote:
    > > On Wed, 2011-01-19 at 15:49 +0800, Markus Trippelsdorf wrote:
    > >> On 2011.01.19 at 08:39 +0100, Markus Trippelsdorf wrote:
    > >>> On 2011.01.18 at 15:54 -0800, Linus Torvalds wrote:
    > >>>>
    > >>>> And as usual, report any regressions to the lists and the appropriate
    > >>>> authorities.
    > >>>
    > >>> Unfortunately 2.6.38-rc1 doesn't even boot on my machine (amd64).
    > >>> This is caused by 86b1e8dd83cbb0f:
    > >>> x86: Make relocatable kernel work with new binutils
    > >>>
    > >>> Reverting the commit solves the problem.
    > >>
    > >> I'm running the latest binutils:
    > >> GNU ld (Linux/GNU Binutils) 2.21.51.0.5.20110104
    > > Hmm, reproduce it here with binutils-2.21.51.0.6-20110118
    > > but not with GNU ld (GNU Binutils for Ubuntu) 2.20.51-system.20100908
    > > I got this in system.map: ffffffff03514880 D jiffies_64, which looks
    > > wrong.
    > > looks binutils changed something again.
    > > Have no idea, CC Lu Hongjiu.
    > >
    >
    > Either way... the whole jiffies vs jiffies_64 thing is kind of
    > ridiculous. We should be able to do it in a completely
    > architecture-generic way by either making it a union(!) (with "jiffies"
    > and "jiffies_64" presumably would be #defines, or we do a global replace
    > across the tree), moving the variable declaration itself to a .S file
    > (which would only have data components and therefore would be
    > arch-generic) or doing something like the attached (untested since it is
    > 1 am here) patch.
    >
    > This should let us get rid of the hacks in *all* the architectures, not
    > just x86.

    Ok - until it's resolved i'll queue up a revert - a known build failure is preferred
    to a boot regression.

    Thanks,

    Ingo


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