On Oct 15, 2016 02:35, "Ard Biesheuvel" <ard.biesheu...@linaro.org> wrote:
>
> This may be related to issues we encountered with LTO. Could you use the
> GCC49 profile instead? The only difference between GCC49 and GCC5 is
> whether LTO is enabled, they can both be used with a GCC that is in fact
> 6.x

Thanks Ard!
We actually still do use the GCC49 profile, and that works with gcc-4.9 and
gcc-5, but not with gcc-6. I'm planning on bisecting gcc to try and
understand why.

Indeed, the GCC5 profile with gcc-5 does lead to a early crash in UEFI, and
that goes away if I drop the lto optimizations.

  -dann

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> https://bugs.launchpad.net/bugs/1632875
>
> Title:
>   qemu-efi built w/ gcc-6 doesn't boot in KVM mode
>
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> Launchpad-Notification-Type: bug
> Launchpad-Bug: distribution=ubuntu; sourcepackage=edk2;
component=universe; status=Confirmed; importance=High; assignee=None;
> Launchpad-Bug: distribution=ubuntu; distroseries=yakkety;
sourcepackage=edk2; component=universe; status=Confirmed; importance=High;
assignee=None;
> Launchpad-Bug-Tags: patch
> Launchpad-Bug-Information-Type: Public
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> Launchpad-Bug-Security-Vulnerability: no
> Launchpad-Bug-Commenters: ard-biesheuvel dannf
> Launchpad-Bug-Reporter: dann frazier (dannf)
> Launchpad-Bug-Modifier: Ard Biesheuvel (ard-biesheuvel)
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Title:
  qemu-efi built w/ gcc-6 doesn't boot in KVM mode

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