Merge branch 'fix/hda' into for-linus

[pandora-kernel.git] / arch / x86 / kernel / tlb_uv.c

diff --git a/arch/x86/kernel/tlb_uv.c b/arch/x86/kernel/tlb_uv.c
index 8c7b03b..8ccabb8 100644 (file)
--- a/arch/x86/kernel/tlb_uv.c
+++ b/arch/x86/kernel/tlb_uv.c
@@ -711,25 +711,31 @@ uv_activation_descriptor_init(int node, int pnode)
        unsigned long pa;
        unsigned long m;
        unsigned long n;
-       unsigned long mmr_image;
        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*/
        n = pa >> uv_nshift;
        m = pa & uv_mmask;
 
-       mmr_image = uv_read_global_mmr64(pnode, UVH_LB_BAU_SB_DESCRIPTOR_BASE);
-       if (mmr_image) {
-               uv_write_global_mmr64(pnode, (unsigned long)
-                                     UVH_LB_BAU_SB_DESCRIPTOR_BASE,
-                                     (n << UV_DESC_BASE_PNODE_SHIFT | m));
-       }
+       uv_write_global_mmr64(pnode, UVH_LB_BAU_SB_DESCRIPTOR_BASE,
+                             (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;
                /*