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authorJens Freimann <jfrei@linux.vnet.ibm.com>2014-03-18 16:34:18 +0100
committerChristian Borntraeger <borntraeger@de.ibm.com>2014-03-25 13:27:11 +0100
commit609433fbed4f25e11e8b058ab7e9478b212879a9 (patch)
treecbb26db5ab1189321d559674d55311a5bba9535d /arch
parentf6c137ff00a478ae619deea8650829dd2f8e71b9 (diff)
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KVM: s390: fix calculation of idle_mask array size
We need BITS_TO_LONGS, not sizeof(long) to calculate the correct size. idle_mask is a bitmask, each bit representing the state of a cpu. The desired outcome is an array of unsigned long fields that can fit KVM_MAX_VCPUS bits. We should not use sizeof(long) which returnes the size in bytes, but BITS_TO_LONGS Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com> Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Diffstat (limited to 'arch')
-rw-r--r--arch/s390/include/asm/kvm_host.h3
1 files changed, 1 insertions, 2 deletions
diff --git a/arch/s390/include/asm/kvm_host.h b/arch/s390/include/asm/kvm_host.h
index 734d302ba389..c36cd35e03f3 100644
--- a/arch/s390/include/asm/kvm_host.h
+++ b/arch/s390/include/asm/kvm_host.h
@@ -213,8 +213,7 @@ struct kvm_s390_float_interrupt {
struct list_head list;
atomic_t active;
int next_rr_cpu;
- unsigned long idle_mask[(KVM_MAX_VCPUS + sizeof(long) - 1)
- / sizeof(long)];
+ unsigned long idle_mask[BITS_TO_LONGS(KVM_MAX_VCPUS)];
unsigned int irq_count;
};