| From | Greg Kroah-Hartman <> | Subject | [ 14/69] ARC: Setup Vector Table Base in early boot | Date | Wed, 16 Oct 2013 10:44:23 -0700 |
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3.10-stable review patch. If anyone has any objections, please let me know.
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From: Vineet Gupta <vgupta@synopsys.com>
commit 05b016ecf5e7a8c24409d8e9effb5d2ec9107708 upstream.
Otherwise early boot exceptions such as instructions errors due to configuration mismatch between kernel and hardware go off to la-la land, as opposed to hitting the handler and panic()'ing properly.
Signed-off-by: Vineet Gupta <vgupta@synopsys.com> Cc: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- arch/arc/kernel/head.S | 2 ++ arch/arc/kernel/irq.c | 2 -- 2 files changed, 2 insertions(+), 2 deletions(-)
--- a/arch/arc/kernel/head.S +++ b/arch/arc/kernel/head.S @@ -27,6 +27,8 @@ stext: ; Don't clobber r0-r4 yet. It might have bootloader provided info ;------------------------------------------------------------------- + sr @_int_vec_base_lds, [AUX_INTR_VEC_BASE] + #ifdef CONFIG_SMP ; Only Boot (Master) proceeds. Others wait in platform dependent way ; IDENTITY Reg [ 3 2 1 0 ] --- a/arch/arc/kernel/irq.c +++ b/arch/arc/kernel/irq.c @@ -32,8 +32,6 @@ void __cpuinit arc_init_IRQ(void) { int level_mask = 0; - write_aux_reg(AUX_INTR_VEC_BASE, _int_vec_base_lds); - /* Disable all IRQs: enable them as devices request */ write_aux_reg(AUX_IENABLE, 0);
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