x86: uv: xpc needs to provide an abstraction for uv_gpa

Provide an SGI SN2/UV agnositic method for converting a global physical
address into a socket physical address.

Signed-off-by: Robin Holt <holt@sgi.com>
Cc: Jack Steiner <steiner@sgi.com>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 10 insertions, 0 deletions

diff --git a/drivers/misc/sgi-xp/xp_sn2.c b/drivers/misc/sgi-xp/xp_sn2.c
index fb3ec9d735a9..d8e463f87241 100644
--- a/drivers/misc/sgi-xp/xp_sn2.c
+++ b/drivers/misc/sgi-xp/xp_sn2.c
@@ -84,6 +84,15 @@ xp_pa_sn2(void *addr)
 }
 
 /*
+ * Convert a global physical to a socket physical address.
+ */
+static unsigned long
+xp_socket_pa_sn2(unsigned long gpa)
+{
+        return gpa;
+}
+
+/*
  * Wrapper for bte_copy().
  *
  *      dst_pa - physical address of the destination of the transfer.
@@ -162,6 +171,7 @@ xp_init_sn2(void)
         xp_region_size = sn_region_size;
 
         xp_pa = xp_pa_sn2;
+        xp_socket_pa = xp_socket_pa_sn2;
         xp_remote_memcpy = xp_remote_memcpy_sn2;
         xp_cpu_to_nasid = xp_cpu_to_nasid_sn2;
         xp_expand_memprotect = xp_expand_memprotect_sn2;