* [PATCH] ARM: SoCFPGA: Fix secondary CPU startup in thumb2 kernel
@ 2016-04-20 13:34 Sascha Hauer
2016-04-20 16:18 ` Dinh Nguyen
0 siblings, 1 reply; 2+ messages in thread
From: Sascha Hauer @ 2016-04-20 13:34 UTC (permalink / raw)
To: linux-arm-kernel
The secondary CPU starts up in ARM mode. When the kernel is compiled in
thumb2 mode we have to explicitly compile the secondary startup
trampoline in ARM mode, otherwise the CPU will go to Nirvana.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Reported-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Suggested-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: stable at vger.kernel.org
---
arch/arm/mach-socfpga/headsmp.S | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/arm/mach-socfpga/headsmp.S b/arch/arm/mach-socfpga/headsmp.S
index 5d94b7a..c160fa3 100644
--- a/arch/arm/mach-socfpga/headsmp.S
+++ b/arch/arm/mach-socfpga/headsmp.S
@@ -13,6 +13,7 @@
#include <asm/assembler.h>
.arch armv7-a
+ .arm
ENTRY(secondary_trampoline)
/* CPU1 will always fetch from 0x0 when it is brought out of reset.
--
2.8.0.rc3
^ permalink raw reply related [flat|nested] 2+ messages in thread
* [PATCH] ARM: SoCFPGA: Fix secondary CPU startup in thumb2 kernel
2016-04-20 13:34 [PATCH] ARM: SoCFPGA: Fix secondary CPU startup in thumb2 kernel Sascha Hauer
@ 2016-04-20 16:18 ` Dinh Nguyen
0 siblings, 0 replies; 2+ messages in thread
From: Dinh Nguyen @ 2016-04-20 16:18 UTC (permalink / raw)
To: linux-arm-kernel
On 04/20/2016 08:34 AM, Sascha Hauer wrote:
> The secondary CPU starts up in ARM mode. When the kernel is compiled in
> thumb2 mode we have to explicitly compile the secondary startup
> trampoline in ARM mode, otherwise the CPU will go to Nirvana.
>
> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
> Reported-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
> Suggested-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
> Cc: stable at vger.kernel.org
> ---
> arch/arm/mach-socfpga/headsmp.S | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/arch/arm/mach-socfpga/headsmp.S b/arch/arm/mach-socfpga/headsmp.S
> index 5d94b7a..c160fa3 100644
> --- a/arch/arm/mach-socfpga/headsmp.S
> +++ b/arch/arm/mach-socfpga/headsmp.S
> @@ -13,6 +13,7 @@
> #include <asm/assembler.h>
>
> .arch armv7-a
> + .arm
>
> ENTRY(secondary_trampoline)
> /* CPU1 will always fetch from 0x0 when it is brought out of reset.
>
Applied!
Thanks,
Dinh
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2016-04-20 13:34 [PATCH] ARM: SoCFPGA: Fix secondary CPU startup in thumb2 kernel Sascha Hauer
2016-04-20 16:18 ` Dinh Nguyen
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