From: Russell King <rmk+kernel@arm.linux.org.uk>
Date: Sun, 21 Nov 2010 11:30:36 +0000 (+0000)
Subject: ARM: pgtable: remove L2 cache flushes for SMP page table bring-up
X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=26bbf0b57a0848932f725076bcb1245ca696e8d3;p=deliverable%2Flinux.git

ARM: pgtable: remove L2 cache flushes for SMP page table bring-up

The MMU is always configured to read page tables from the L2 cache
so there's little point flushing them out of the L2 cache back to
RAM.  Remove these flushes.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---

diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c
index 8c1959590252..46313805f430 100644
--- a/arch/arm/kernel/smp.c
+++ b/arch/arm/kernel/smp.c
@@ -85,7 +85,6 @@ static inline void identity_mapping_add(pgd_t *pgd, unsigned long start,
 		pmd[1] = __pmd(addr | prot);
 		addr += SECTION_SIZE;
 		flush_pmd_entry(pmd);
-		outer_clean_range(__pa(pmd), __pa(pmd + 1));
 	}
 }
 
@@ -100,7 +99,6 @@ static inline void identity_mapping_del(pgd_t *pgd, unsigned long start,
 		pmd[0] = __pmd(0);
 		pmd[1] = __pmd(0);
 		clean_pmd_entry(pmd);
-		outer_clean_range(__pa(pmd), __pa(pmd + 1));
 	}
 }