diff options
| author | Vitaly Kuznetsov <vkuznets@redhat.com> | 2016-12-07 12:16:25 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-01-10 23:46:40 +0300 |
| commit | 421b8f20d3c381b215f988b42428f56fc3b82405 (patch) | |
| tree | 52205e1a89f420e9eec51715de7720eedb271ab1 | |
| parent | c0bb03924f1a80e7f65900e36c8e6b3dc167c5f8 (diff) | |
| download | linux-421b8f20d3c381b215f988b42428f56fc3b82405.tar.xz | |
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>
| -rw-r--r-- | drivers/hv/hv.c | 4 |
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); } |