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authorAnton Blanchard <anton@samba.org>2011-01-29 15:26:19 +0300
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2011-02-07 05:06:01 +0300
commitd69043e8069f493ebee9472bcc78b3f54c5c27d9 (patch)
tree8b94f0000312fc3295e28b3d3a0c25074b62c71f
parent5de1669910a59025e6cf24baef242a6c264d5752 (diff)
downloadlinux-d69043e8069f493ebee9472bcc78b3f54c5c27d9.tar.xz
powerpc/numa: Check for all VPHN changes
The hypervisor uses unsigned 1 byte counters to signal topology changes to the OS. Since they can wrap we need to check for any difference, not just if the hypervisor count is greater than the previous count. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
-rw-r--r--arch/powerpc/mm/numa.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c
index f25633d3d008..b2937efdfd7a 100644
--- a/arch/powerpc/mm/numa.c
+++ b/arch/powerpc/mm/numa.c
@@ -1341,7 +1341,7 @@ static int update_cpu_associativity_changes_mask(void)
volatile u8 *hypervisor_counts = lppaca[cpu].vphn_assoc_counts;
for (i = 0; i < distance_ref_points_depth; i++) {
- if (hypervisor_counts[i] > counts[i]) {
+ if (hypervisor_counts[i] != counts[i]) {
counts[i] = hypervisor_counts[i];
changed = 1;
}