patch "hv: allocate synic pages for all present CPUs" added to char-misc-testing

This is a note to let you know that I've just added the patch titled

hv: allocate synic pages for all present CPUs

to my char-misc git tree which can be found at
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc.git
in the char-misc-testing branch.

The patch will show up in the next release of the linux-next tree (usually sometime within the next 24 hours during the week.)

The patch will be merged to the char-misc-next branch sometime soon, after it passes testing, and the merge window is open.

If you have any questions about this process, please let me know.

From: Vitaly Kuznetsov <[email protected]>
Date: Wed, 7 Dec 2016 01:16:25 -0800
Subject: 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.

---
 drivers/hv/hv.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

index b44b32f21e61..dc11296d50fd 100644
@@ -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);
 }
 

2.11.0