[IA64-SGI] XPC changes to support more than 2k nasids

XPC needs to be changed to support up to 16k nasids on an SGI Altix system.

Signed-off-by: Dean Nelson <dcn@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>

1 files changed, 4 insertions, 4 deletions

diff --git a/arch/ia64/sn/kernel/xpc_main.c b/arch/ia64/sn/kernel/xpc_main.c
index db349c6d4c58..38f2c699192c 100644
--- a/arch/ia64/sn/kernel/xpc_main.c
+++ b/arch/ia64/sn/kernel/xpc_main.c
@@ -1049,11 +1049,11 @@ xpc_init(void)
 
         /*
          * xpc_remote_copy_buffer is used as a temporary buffer for bte_copy'ng
-         * both a partition's reserved page and its XPC variables. Its size was
-         * based on the size of a reserved page. So we need to ensure that the
-         * XPC variables will fit as well.
+         * various portions of a partition's reserved page. Its size is based
+         * on the size of the reserved page header and part_nasids mask. So we
+         * need to ensure that the other items will fit as well.
          */
-        if (XPC_VARS_ALIGNED_SIZE > XPC_RSVD_PAGE_ALIGNED_SIZE) {
+        if (XPC_RP_VARS_SIZE > XPC_RP_HEADER_SIZE + XP_NASID_MASK_BYTES) {
                 dev_err(xpc_part, "xpc_remote_copy_buffer is not big enough\n");
                 return -EPERM;
         }