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ARM: pgtable: invert L_PTE_EXEC to L_PTE_XN

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The hardware page tables use an XN bit 'execute never'.  Historically,
we've had a Linux 'execute allow' bit, in the positive sense.  Get rid
of this artifact as future hardware will continue to have the XN sense.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Russell King
2010-11-16 00:23:31 +00:00
parent e926f4495e
commit 9522d7e4cb
4 changed files with 33 additions and 34 deletions
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4
arch/arm/mm/proc-v7.S
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@@ -149,8 +149,8 @@ ENTRY(cpu_v7_set_pte_ext)
tstne r3, #PTE_EXT_APX
bicne r3, r3, #PTE_EXT_APX | PTE_EXT_AP0
tst r1, #L_PTE_EXEC
orreq r3, r3, #PTE_EXT_XN
tst r1, #L_PTE_XN
orrne r3, r3, #PTE_EXT_XN
tst r1, #L_PTE_YOUNG
tstne r1, #L_PTE_PRESENT