Messages in this thread | | | Date | Sat, 26 Apr 2008 17:41:23 +0200 | From | Ingo Molnar <> | Subject | Re: [git pull] x86 PAT changes |
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* Gabriel C <nix.or.die@googlemail.com> wrote:
> Ingo Molnar wrote: > > * Gabriel C <nix.or.die@googlemail.com> wrote: > > > >> Hi Ingo, > >> > >> When using an 64bit ( didn't got time to test 32bit now ) kernel[1] > >> with PAT enabled , kvm-intel does not work anymore. > >> > >> When modprobing kvm-intel , kvm is saying VT extension is disable by > >> BIOS which isn't true. When disabling PAT again ( no changes to BIOS ) > >> kvm-intel works again here. > >> > >> Is that an known problem ? > > > > no, that side-effect was not known. Cc:-ed more folks. > > It seems like the update triggers some compiler bug. > > Setting CC_OPTIMIZE_FOR_SIZE=n fixed that btw. > > I don't have the time right now but later on today I will compile > gcc43_svn_branch and test again with CC_OPTIMIZE_FOR_SIZE=y and see > what I get. > > Ingo sorry for the noise.
no problem and it's not noise even if it turns out to be a compiler problem - we very much want to know about them when they affect the kernel.
Ingo
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