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Commit 609433fb authored by Jens Freimann's avatar Jens Freimann Committed by Christian Borntraeger
Browse files

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: default avatarJens Freimann <jfrei@linux.vnet.ibm.com>
Reviewed-by: default avatarCornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: default avatarChristian Borntraeger <borntraeger@de.ibm.com>
parent f6c137ff

arch/s390/include/asm/kvm_host.h

+1 −2
Original line number Diff line number Diff line
@@ -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;

};