On Tue, 2015-07-21 at 11:13 -0700, Greg Kroah-Hartman wrote:
> On Tue, Jul 21, 2015 at 01:13:27PM -0400, Donald Parsons wrote:
> > Greg,
> >
> > The kernel still does not compile with gcc-4.5.1 since linux-4.0.5 when
> > a kvm back-port from 4.1-rc5 went in. (This is on Linux 4.1.2 SMP Mon
> > Jul 13 18:08:30 EDT 2015 x86_64 Fedora 14)
> >
> > This mis-compile was fixed in 4.1-rc8. The diff was:
> >
> > diff -ur linux-4.1-rc7/arch/x86/kvm/mmu.c
> > linux-4.1-rc8/arch/x86/kvm/mmu.c
> > --- linux-4.1-rc7/arch/x86/kvm/mmu.c 2015-07-15 00:05:34.000000000
> > -0400
> > +++ linux-4.1-rc8/arch/x86/kvm/mmu.c 2015-07-15 00:07:45.000000000
> > -0400
> > @@ -4215,13 +4215,13 @@
> > u64 entry, gentry, *spte;
> > int npte;
> > bool remote_flush, local_flush, zap_page;
> > - union kvm_mmu_page_role mask = (union kvm_mmu_page_role) {
> > - .cr0_wp = 1,
> > - .cr4_pae = 1,
> > - .nxe = 1,
> > - .smep_andnot_wp = 1,
> > - .smap_andnot_wp = 1,
> > - };
> > + union kvm_mmu_page_role mask = { };
> > +
> > + mask.cr0_wp = 1;
> > + mask.cr4_pae = 1;
> > + mask.nxe = 1;
> > + mask.smep_andnot_wp = 1;
> > + mask.smap_andnot_wp = 1;
> >
> > /*
> > * If we don't have indirect shadow pages, it means no page is
> >
> >
> > Please add to linux-4.0.9 so older compilers will work.
>
> What is the commit id in Linus's tree that resolves this?
I do not know but I found this in Linus' linux-4.1-rc8 email announce:
Andrew Morton (1):
arch/x86/kvm/mmu.c: work around gcc-4.4.4 bug
which must be it. Added Andrew to cc as he hopefully knows the answer
to your question.
Thanks,
Don Parsons
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