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authorJanosch Frank <frankja@linux.ibm.com>2021-01-13 11:56:26 -0500
committerVasily Gorbik <gor@linux.ibm.com>2021-01-27 13:00:04 +0100
commite82080e1f456467cc185fe65ee69fe9f9bd0b576 (patch)
tree7d644bfce897f306f619ab521c39c43b9dea7a0a /arch/s390/kernel
parent6c12a6384e0c0b96debd88b24028e58f2ebd417b (diff)
downloadlinux-e82080e1f456467cc185fe65ee69fe9f9bd0b576.tar.gz
s390: uv: Fix sysfs max number of VCPUs reporting
The number reported by the query is N-1 and I think people reading the
sysfs file would expect N instead. For users creating VMs there's no
actual difference because KVM's limit is currently below the UV's
limit.

Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Fixes: a0f60f8431999 ("s390/protvirt: Add sysfs firmware interface for Ultravisor information")
Cc: stable@vger.kernel.org
Reviewed-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Acked-by: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Diffstat (limited to 'arch/s390/kernel')
-rw-r--r--arch/s390/kernel/uv.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/s390/kernel/uv.c b/arch/s390/kernel/uv.c
index 883bfed9f5c2..b2d2ad153067 100644
--- a/arch/s390/kernel/uv.c
+++ b/arch/s390/kernel/uv.c
@@ -368,7 +368,7 @@ static ssize_t uv_query_max_guest_cpus(struct kobject *kobj,
 				       struct kobj_attribute *attr, char *page)
 {
 	return scnprintf(page, PAGE_SIZE, "%d\n",
-			uv_info.max_guest_cpus);
+			uv_info.max_guest_cpu_id + 1);
 }
 
 static struct kobj_attribute uv_query_max_guest_cpus_attr =