gru: support 64-bit GRU addresses
Increase the maximum address supported by the SGI GRU driver to a full 64
bits. Note that GRU addresses are not always the same as socket virtual
addresses. Sockets may not necessarily support the full 64 bits.
Signed-off-by: Jack Steiner <steiner@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/misc/sgi-gru/grutables.h b/drivers/misc/sgi-gru/grutables.h
index 676da78..f0c7308 100644
--- a/drivers/misc/sgi-gru/grutables.h
+++ b/drivers/misc/sgi-gru/grutables.h
@@ -293,13 +293,7 @@
#define ASID_INC 8 /* number of regions */
/* Generate a GRU asid value from a GRU base asid & a virtual address. */
-#if defined CONFIG_IA64
#define VADDR_HI_BIT 64
-#elif defined CONFIG_X86_64
-#define VADDR_HI_BIT 48
-#else
-#error "Unsupported architecture"
-#endif
#define GRUREGION(addr) ((addr) >> (VADDR_HI_BIT - 3) & 3)
#define GRUASID(asid, addr) ((asid) + GRUREGION(addr))