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?
thanks,
greg k-h
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