aboutsummaryrefslogtreecommitdiff
path: root/arch/x86/kernel/tlb_uv.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/x86/kernel/tlb_uv.c')
-rw-r--r--arch/x86/kernel/tlb_uv.c15
1 files changed, 13 insertions, 2 deletions
diff --git a/arch/x86/kernel/tlb_uv.c b/arch/x86/kernel/tlb_uv.c
index 8c7b03b0cfc..124d40c575d 100644
--- a/arch/x86/kernel/tlb_uv.c
+++ b/arch/x86/kernel/tlb_uv.c
@@ -715,7 +715,12 @@ uv_activation_descriptor_init(int node, int pnode)
struct bau_desc *adp;
struct bau_desc *ad2;
- adp = (struct bau_desc *)kmalloc_node(16384, GFP_KERNEL, node);
+ /*
+ * each bau_desc is 64 bytes; there are 8 (UV_ITEMS_PER_DESCRIPTOR)
+ * per cpu; and up to 32 (UV_ADP_SIZE) cpu's per blade
+ */
+ adp = (struct bau_desc *)kmalloc_node(sizeof(struct bau_desc)*
+ UV_ADP_SIZE*UV_ITEMS_PER_DESCRIPTOR, GFP_KERNEL, node);
BUG_ON(!adp);
pa = uv_gpa(adp); /* need the real nasid*/
@@ -729,7 +734,13 @@ uv_activation_descriptor_init(int node, int pnode)
(n << UV_DESC_BASE_PNODE_SHIFT | m));
}
- for (i = 0, ad2 = adp; i < UV_ACTIVATION_DESCRIPTOR_SIZE; i++, ad2++) {
+ /*
+ * initializing all 8 (UV_ITEMS_PER_DESCRIPTOR) descriptors for each
+ * cpu even though we only use the first one; one descriptor can
+ * describe a broadcast to 256 nodes.
+ */
+ for (i = 0, ad2 = adp; i < (UV_ADP_SIZE*UV_ITEMS_PER_DESCRIPTOR);
+ i++, ad2++) {
memset(ad2, 0, sizeof(struct bau_desc));
ad2->header.sw_ack_flag = 1;
/*