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.
Thanks,
Don Parsons
PS: Compile error is :
CC [M] arch/x86/kvm/mmu.o
arch/x86/kvm/mmu.c: In function kvm_mmu_pte_write:
arch/x86/kvm/mmu.c:4219:3: error: unknown field cr0_wp specified
in initializer
arch/x86/kvm/mmu.c:4220:3: error: unknown field cr4_pae specified
in initializer
arch/x86/kvm/mmu.c:4220:3: warning: excess elements in union initializer
arch/x86/kvm/mmu.c:4220:3: warning: (near initialization for
(anonymous))
arch/x86/kvm/mmu.c:4221:3: error: unknown field nxe specified in
initializer
arch/x86/kvm/mmu.c:4221:3: warning: excess elements in union initializer
arch/x86/kvm/mmu.c:4221:3: warning: (near initialization for
(anonymous))
arch/x86/kvm/mmu.c:4222:3: error: unknown field smep_andnot_wp
specified in initializer
arch/x86/kvm/mmu.c:4222:3: warning: excess elements in union initializer
arch/x86/kvm/mmu.c:4222:3: warning: (near initialization for
(anonymous))
arch/x86/kvm/mmu.c:4223:3: error: unknown field smap_andnot_wp
specified in initializer
arch/x86/kvm/mmu.c:4223:3: warning: excess elements in union initializer
arch/x86/kvm/mmu.c:4223:3: warning: (near initialization for
(anonymous))
make[2]: *** [arch/x86/kvm/mmu.o] Error 1
make[1]: *** [arch/x86/kvm] Error 2
make: *** [arch/x86] Error 2
--
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