From: Paul Durrant <paul.durrant@citrix.com>
Date: Wed, 9 Dec 2015 14:15:35 +0000 (+0000)
Subject: Size XENBUS_CACHE Magazine array to maximum processor count
X-Git-Url: http://xenbits.xensource.com/gitweb?a=commitdiff_plain;h=7477b05263ba380310a519110a823741ff2a0a0e;p=people%2Fpauldu%2Fxenbus.git

Size XENBUS_CACHE Magazine array to maximum processor count

Sizing to active processor count means that the array will be too small if
a processor is onlined after cache creation.

Signed-off-by: Paul Durrant <paul.durrant@citrix.com>
---

diff --git a/src/xenbus/cache.c b/src/xenbus/cache.c
index 9727b14..5a14411 100644
--- a/src/xenbus/cache.c
+++ b/src/xenbus/cache.c
@@ -617,7 +617,7 @@ CacheCreate(
     if (!NT_SUCCESS(status))
         goto fail4;
 
-    (*Cache)->MagazineCount = KeQueryActiveProcessorCountEx(ALL_PROCESSOR_GROUPS);
+    (*Cache)->MagazineCount = KeQueryMaximumProcessorCountEx(ALL_PROCESSOR_GROUPS);
     (*Cache)->Magazine = __CacheAllocate(sizeof (XENBUS_CACHE_MAGAZINE) * (*Cache)->MagazineCount);
 
     status = STATUS_NO_MEMORY;