Commit ccb2e5cd authored by Vitaly Kuznetsov's avatar Vitaly Kuznetsov Committed by Sasha Levin

hv: init percpu_list in hv_synic_alloc()

[ Upstream commit 3c7630d3 ]

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: default avatarVitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: default avatarK. Y. Srinivasan <kys@microsoft.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: default avatarSasha Levin <alexander.levin@verizon.com>
parent fbb6950e
...@@ -367,6 +367,8 @@ int hv_synic_alloc(void) ...@@ -367,6 +367,8 @@ 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;
...@@ -460,8 +462,6 @@ void hv_synic_init(void *arg) ...@@ -460,8 +462,6 @@ 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.
*/ */
......
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