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[ARM] remove bogus #ifdef CONFIG_HIGHMEM in show_pte()

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The restriction on !CONFIG_HIGHMEM is unneeded since page tables are
currently never allocated with highmem pages, and actually disable PTE
dump whenever highmem is configured.  Let's have a dynamic test to better
describe the current limitation instead.

Signed-off-by: Nicolas Pitre <nico@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Nicolas Pitre
2008-09-11 11:52:02 -04:00
committed by Russell King
parent 9210807cb5
commit 252d4c276d
1 changed files with 4 additions and 2 deletions
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6
arch/arm/mm/fault.c
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@@ -14,6 +14,7 @@
#include <linux/init.h> #include <linux/init.h>
#include <linux/kprobes.h> #include <linux/kprobes.h>
#include <linux/uaccess.h> #include <linux/uaccess.h>
#include <linux/page-flags.h>
#include <asm/system.h> #include <asm/system.h>
#include <asm/pgtable.h> #include <asm/pgtable.h>
@@ -83,13 +84,14 @@ void show_pte(struct mm_struct *mm, unsigned long addr)
break; break;
} }
#ifndef CONFIG_HIGHMEM
/* We must not map this if we have highmem enabled */ /* We must not map this if we have highmem enabled */
if (PageHighMem(pfn_to_page(pmd_val(*pmd) >> PAGE_SHIFT)))
break;
pte = pte_offset_map(pmd, addr); pte = pte_offset_map(pmd, addr);
printk(", *pte=%08lx", pte_val(*pte)); printk(", *pte=%08lx", pte_val(*pte));
printk(", *ppte=%08lx", pte_val(pte[-PTRS_PER_PTE])); printk(", *ppte=%08lx", pte_val(pte[-PTRS_PER_PTE]));
pte_unmap(pte); pte_unmap(pte);
#endif
} while(0); } while(0);
printk("\n"); printk("\n");