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This patch avoids gcc issuing the following warning when KVM_MAX_VCPUS=1: warning: array subscript is above array bounds kvm_for_each_vcpu currently checks to see if the index for the vcpu is valid /after/ loading it. We don't run into problems because the address is still inside the enclosing struct kvm and we never deference or write to it, so this isn't a security issue. The warning occurs when KVM_MAX_VCPUS=1 because the increment portion of the loop will *always* cause the loop to load an invalid location since ++idx will always be > 0. This patch moves the load so that the check occurs before the load and we don't run into the compiler warning. Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Jeff Mahoney <jeffm@suse.com> Signed-off-by: Avi Kivity <avi@redhat.com> |
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