[patch 3/6] x86: UV - Introduce uv_gpa_is_mmr.

[Robin Holt]

Provide a mechanism for determining if a global physical address is
pointing to a UV hub MMR.

To: Ingo Molnar <mingo@xxxxxxx>
Signed-off-by: Robin Holt <holt@xxxxxxx>
Cc: Jack Steiner <steiner@xxxxxxx>
Cc: lkml <linux-kernel@xxxxxxxxxxxxxxx>

---

 arch/x86/include/asm/uv/uv_hub.h |    7 +++++++
 1 file changed, 7 insertions(+)
Index: linux-x86/arch/x86/include/asm/uv/uv_hub.h
===================================================================
--- linux-x86.orig/arch/x86/include/asm/uv/uv_hub.h	2009-11-09 08:50:25.000000000 -0600
+++ linux-x86/arch/x86/include/asm/uv/uv_hub.h	2009-11-09 08:52:14.000000000 -0600
@@ -232,6 +232,13 @@ static inline unsigned long uv_gpa(void 
 	return uv_soc_phys_ram_to_gpa(__pa(v));
 }
 
+/* Top two bits indicate the requested address is in MMR space.  */
+static inline int
+uv_gpa_in_mmr_space(unsigned long gpa)
+{
+	return (gpa >> 62) == 0x3UL;
+}
+
 /* UV global physical address --> socket phys RAM */
 static inline unsigned long uv_gpa_to_soc_phys_ram(unsigned long gpa)
 {

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/