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hv: init percpu_list in hv_synic_alloc()

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commit 3c7630d350 upstream.

Initializing hv_context.percpu_list in hv_synic_alloc() helps to prevent a
crash in percpu_channel_enq() when not all CPUs were online during
initialization and it naturally belongs there.

Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Vitaly Kuznetsov
2016-12-07 01:16:26 -08:00
committed by Greg Kroah-Hartman
parent 374907e8d1
commit 862d2b7d21
1 changed files with 2 additions and 2 deletions
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4
drivers/hv/hv.c
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@@ -461,6 +461,8 @@ int hv_synic_alloc(void)
pr_err("Unable to allocate post msg page\n"); pr_err("Unable to allocate post msg page\n");
goto err; goto err;
} }
INIT_LIST_HEAD(&hv_context.percpu_list[cpu]);
} }
return 0; return 0;
@@ -555,8 +557,6 @@ void hv_synic_init(void *arg)
rdmsrl(HV_X64_MSR_VP_INDEX, vp_index); rdmsrl(HV_X64_MSR_VP_INDEX, vp_index);
hv_context.vp_index[cpu] = (u32)vp_index; hv_context.vp_index[cpu] = (u32)vp_index;
INIT_LIST_HEAD(&hv_context.percpu_list[cpu]);
/* /*
* Register the per-cpu clockevent source. * Register the per-cpu clockevent source.
*/ */