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_uv.c b/drivers/misc/sgi-xp/xp_uv.c
index d238576b26fa..1e61f8a61a30 100644
--- a/drivers/misc/sgi-xp/xp_uv.c
+++ b/drivers/misc/sgi-xp/xp_uv.c
@@ -32,6 +32,15 @@ xp_pa_uv(void *addr)
         return uv_gpa(addr);
 }
 
+/*
+ * Convert a global physical to socket physical address.
+ */
+static unsigned long
+xp_socket_pa_uv(unsigned long gpa)
+{
+        return uv_gpa_to_soc_phys_ram(gpa);
+}
+
 static enum xp_retval
 xp_remote_memcpy_uv(unsigned long dst_gpa, const unsigned long src_gpa,
                     size_t len)
@@ -123,6 +132,7 @@ xp_init_uv(void)
         xp_region_size = sn_region_size;
 
         xp_pa = xp_pa_uv;
+        xp_socket_pa = xp_socket_pa_uv;
         xp_remote_memcpy = xp_remote_memcpy_uv;
         xp_cpu_to_nasid = xp_cpu_to_nasid_uv;
         xp_expand_memprotect = xp_expand_memprotect_uv;