Patchwork [14/14] 8xx: The TLB miss handler manages ACCESSED correctly.

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Submitter Joakim Tjernlund
Date Oct. 10, 2011, 11:30 a.m.
Message ID <1318246220-4839-15-git-send-email-Joakim.Tjernlund@transmode.se>
Download mbox | patch
Permalink /patch/118717/
State Not Applicable
Headers show

Comments

Joakim Tjernlund - Oct. 10, 2011, 11:30 a.m.
The new MMU/TLB code no longer sets ACCESSED unconditionally
so remove the exception.

Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se>
---
 include/asm-ppc/pgtable.h |   10 ----------
 1 files changed, 0 insertions(+), 10 deletions(-)

Patch

diff --git a/include/asm-ppc/pgtable.h b/include/asm-ppc/pgtable.h
index 6cfc5fc..b94e8a8 100644
--- a/include/asm-ppc/pgtable.h
+++ b/include/asm-ppc/pgtable.h
@@ -318,16 +318,6 @@  extern unsigned long vmalloc_start;
 #define _PMD_PAGE_MASK	0x000c
 #define _PMD_PAGE_8M	0x000c
 
-/*
- * The 8xx TLB miss handler allegedly sets _PAGE_ACCESSED in the PTE
- * for an address even if _PAGE_PRESENT is not set, as a performance
- * optimization.  This is a bug if you ever want to use swap unless
- * _PAGE_ACCESSED is 2, which it isn't, or unless you have 8xx-specific
- * definitions for __swp_entry etc. below, which would be gross.
- *  -- paulus
- */
-#define _PTE_NONE_MASK	_PAGE_ACCESSED
-
 #else /* CONFIG_6xx */
 /* Definitions for 60x, 740/750, etc. */
 #define _PAGE_PRESENT	0x001	/* software: pte contains a translation */