linux-kernel - [PATCH 4/6] MIPS: tidy EntryLo bit definitions, add PFN

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Message-ID: <1442947373-13345-5-git-send-email-paul.burton@imgtec.com>
Date:	Tue, 22 Sep 2015 11:42:51 -0700
From:	Paul Burton <paul.burton@...tec.com>
To:	<linux-mips@...ux-mips.org>
CC:	Paul Burton <paul.burton@...tec.com>,
	"Steven J. Hill" <Steven.Hill@...tec.com>,
	"Maciej W. Rozycki" <macro@...ux-mips.org>,
	<linux-kernel@...r.kernel.org>,
	James Hogan <james.hogan@...tec.com>,
	"Markos Chandras" <markos.chandras@...tec.com>,
	Ralf Baechle <ralf@...ux-mips.org>
Subject: [PATCH 4/6] MIPS: tidy EntryLo bit definitions, add PFN

Tidy up the definition of the EntryLo RI & XI bits using BITS_PER_LONG
rather than #ifdef'ing on CONFIG_64BIT, and add a definition for the
offset to the PFN field for use by a later patch.

Signed-off-by: Paul Burton <paul.burton@...tec.com>
---

 arch/mips/include/asm/mipsregs.h | 12 +++---------
 1 file changed, 3 insertions(+), 9 deletions(-)

diff --git a/arch/mips/include/asm/mipsregs.h b/arch/mips/include/asm/mipsregs.h
index d3cd8ea..76dbb38 100644
--- a/arch/mips/include/asm/mipsregs.h
+++ b/arch/mips/include/asm/mipsregs.h
@@ -126,15 +126,9 @@
 #define R3K_ENTRYLO_N		(_ULCAST_(1) << 11)
 
 /* MIPS32/64 EntryLo bit definitions */
-#ifdef CONFIG_64BIT
-/* as read by dmfc0 */
-#define MIPS_ENTRYLO_XI		(_ULCAST_(1) << 62)
-#define MIPS_ENTRYLO_RI		(_ULCAST_(1) << 63)
-#else
-/* as read by mfc0 */
-#define MIPS_ENTRYLO_XI		(_ULCAST_(1) << 30)
-#define MIPS_ENTRYLO_RI		(_ULCAST_(1) << 31)
-#endif
+#define MIPS_ENTRYLO_PFN_SHIFT	6
+#define MIPS_ENTRYLO_XI		(_ULCAST_(1) << (BITS_PER_LONG - 2))
+#define MIPS_ENTRYLO_RI		(_ULCAST_(1) << (BITS_PER_LONG - 1))
 
 /*
  * Values for PageMask register
-- 
2.5.3

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