[PATCH] ARM: Thumb-2: Fix out-of-range offset for Thumb-2 in proc-v7.S

2011/1/12 Uwe Kleine-K?nig [off-list ref]:

On Tue, Jan 11, 2011 at 06:03:33PM -0600, Dave Martin wrote:

quoted

The following patch introduces a pre-increment addressing
offset which is out of range for Thumb-2:
? ? ARM: pgtable: switch order of Linux vs hardware page tables

a commit id would be nice here

Uwe

Apologies--- it's commit d30e45eeabefadc6039d7f876a59e5f5f6cb11c6

Cheers
---Dave

quoted

162: ?str ? ? r3, [r0, #2048]!

Thumb-2 only permits offsets <256 for pre-increment addressing.

This patch replaces the store instruction with a suitable add-str
pair for the Thumb-2 case.

Signed-off-by: Dave Martin <redacted>
---
KernelVersion: v2.6.37

?arch/arm/mm/proc-v7.S | ? ?4 +++-
?1 files changed, 3 insertions(+), 1 deletions(-)

diff --git a/arch/arm/mm/proc-v7.S b/arch/arm/mm/proc-v7.S
index b49fab2..0c1172b 100644
--- a/arch/arm/mm/proc-v7.S
+++ b/arch/arm/mm/proc-v7.S

@@ -159,7 +159,9 @@ ENTRY(cpu_v7_set_pte_ext)

? ? ? tstne ? r1, #L_PTE_PRESENT
? ? ? moveq ? r3, #0

- ? ? str ? ? r3, [r0, #2048]!
+ ARM( ? ? ? ?str ? ? r3, [r0, #2048]! )
+ THUMB( ? ? ?add ? ? r0, r0, #2048 )
+ THUMB( ? ? ?str ? ? r3, [r0] )
? ? ? mcr ? ? p15, 0, r0, c7, c10, 1 ? ? ? ? ?@ flush_pte
?#endif
? ? ? mov ? ? pc, lr
--
1.7.1


_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel at lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

--
Pengutronix e.K. ? ? ? ? ? ? ? ? ? ? ? ? ? | Uwe Kleine-K?nig ? ? ? ? ? ?|
Industrial Linux Solutions ? ? ? ? ? ? ? ? | http://www.pengutronix.de/ ?|