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authorVitaly Kuznetsov <vkuznets@redhat.com>2016-12-07 01:16:25 -0800
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-01-10 21:46:40 +0100
commit421b8f20d3c381b215f988b42428f56fc3b82405 (patch)
tree52205e1a89f420e9eec51715de7720eedb271ab1 /drivers/hv
parentc0bb03924f1a80e7f65900e36c8e6b3dc167c5f8 (diff)
downloadlinux-421b8f20d3c381b215f988b42428f56fc3b82405.tar.bz2
hv: allocate synic pages for all present CPUs
It may happen that not all CPUs are online when we do hv_synic_alloc() and in case more CPUs come online later we may try accessing these allocated structures. Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com> Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Cc: <stable@vger.kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/hv')
-rw-r--r--drivers/hv/hv.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/hv/hv.c b/drivers/hv/hv.c
index b44b32f21e61..dc11296d50fd 100644
--- a/drivers/hv/hv.c
+++ b/drivers/hv/hv.c
@@ -411,7 +411,7 @@ int hv_synic_alloc(void)
goto err;
}
- for_each_online_cpu(cpu) {
+ for_each_present_cpu(cpu) {
hv_context.event_dpc[cpu] = kmalloc(size, GFP_ATOMIC);
if (hv_context.event_dpc[cpu] == NULL) {
pr_err("Unable to allocate event dpc\n");
@@ -482,7 +482,7 @@ void hv_synic_free(void)
int cpu;
kfree(hv_context.hv_numa_map);
- for_each_online_cpu(cpu)
+ for_each_present_cpu(cpu)
hv_synic_free_cpu(cpu);
}