This is incremented by a maximum of 4 for every vcpu, so we are far from
overflow.  16 bits improve struct packing.

Signed-off-by: Avi Kivity <[email protected]>
---
 arch/x86/include/asm/kvm_host.h |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
index cdaaedc..f38007d 100644
--- a/arch/x86/include/asm/kvm_host.h
+++ b/arch/x86/include/asm/kvm_host.h
@@ -192,7 +192,7 @@ struct kvm_mmu_page {
         */
        gfn_t gfn;
        union kvm_mmu_page_role role;
-       int root_count;           /* Currently serving as active root */
+       short root_count;         /* Currently serving as active root */
        bool multimapped;         /* More than one parent_pte? */
        bool unsync;
        union {
-- 
1.7.0.4

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