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Groups > linux.kernel > #1172080
| From | Luis Henriques <luis.henriques@canonical.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH 3.16.y-ckt 32/71] arch/x86/kvm/mmu.c: work around gcc-4.4.4 bug |
| Date | 2015-06-25 12:20 +0200 |
| Message-ID | <pFcqg-5Nm-63@gated-at.bofh.it> (permalink) |
| References | <pFcgx-5Bx-7@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
3.16.7-ckt14 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Andrew Morton <akpm@linux-foundation.org>
commit 5ec45a192fe6e287f0fc06d5ca4f3bd446d94803 upstream.
Fix this compile issue with gcc-4.4.4:
arch/x86/kvm/mmu.c: In function 'kvm_mmu_pte_write':
arch/x86/kvm/mmu.c:4256: error: unknown field 'cr0_wp' specified in initializer
arch/x86/kvm/mmu.c:4257: error: unknown field 'cr4_pae' specified in initializer
arch/x86/kvm/mmu.c:4257: warning: excess elements in union initializer
...
gcc-4.4.4 (at least) has issues when using anonymous unions in
initializers.
Fixes: edc90b7dc4ceef6 ("KVM: MMU: fix SMAP virtualization")
Cc: Xiao Guangrong <guangrong.xiao@linux.intel.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Davidlohr Bueso <dave@stgolabs.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Vinson Lee <vlee@twopensource.com>
Signed-off-by: Luis Henriques <luis.henriques@canonical.com>
---
arch/x86/kvm/mmu.c | 14 +++++++-------
1 file changed, 7 insertions(+), 7 deletions(-)
diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index 458ae4d1324d..59ff6e7f3bef 100644
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -4087,13 +4087,13 @@ void kvm_mmu_pte_write(struct kvm_vcpu *vcpu, gpa_t gpa,
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
--
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