+ x86-uv-introduce-uv_gpa_is_mmr.patch added to -mm tree

[akpm@linux-foundation.org]

The patch titled
     x86: uv: introduce uv_gpa_is_mmr
has been added to the -mm tree.  Its filename is
     x86-uv-introduce-uv_gpa_is_mmr.patch

Before you just go and hit "reply", please:
   a) Consider who else should be cc'ed
   b) Prefer to cc a suitable mailing list as well
   c) Ideally: find the original patch on the mailing list and do a
      reply-to-all to that, adding suitable additional cc's

*** Remember to use Documentation/SubmitChecklist when testing your code ***

See http://userweb.kernel.org/~akpm/stuff/added-to-mm.txt to find
out what to do about this

The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/

------------------------------------------------------
Subject: x86: uv: introduce uv_gpa_is_mmr
From: Robin Holt <holt@sgi.com>

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

To: Andrew Morton <akpm@linux-foundation.org>
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>
---

 arch/x86/include/asm/uv/uv_hub.h |    7 +++++++
 1 file changed, 7 insertions(+)

diff -puN arch/x86/include/asm/uv/uv_hub.h~x86-uv-introduce-uv_gpa_is_mmr arch/x86/include/asm/uv/uv_hub.h
--- a/arch/x86/include/asm/uv/uv_hub.h~x86-uv-introduce-uv_gpa_is_mmr
+++ a/arch/x86/include/asm/uv/uv_hub.h
@@ -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)
 {
_

Patches currently in -mm which might be from holt@sgi.com are

x86-uv-introduce-a-means-to-translate-from-gpa-socket_paddr.patch
x86-uv-xpc-needs-to-provide-an-abstraction-for-uv_gpa.patch
x86-uv-introduce-uv_gpa_is_mmr.patch
x86-uv-implement-a-gru_read_gpa-kernel-function.patch
x86-uv-update-xpc-to-handle-updated-bios-interface.patch
x86-uv-xpc-null-deref-when-mesq-becomes-empty.patch
x86-uv-xpc_make_first_contact-hang-due-to-not-accepting-active-state.patch
x86-uv-xpc-receive-message-reuse-triggers-invalid-bug_on.patch