On Tue, Mar 26, 2013 at 05:00:56PM +0000, Marc Zyngier wrote:
> --- a/arch/arm64/kernel/entry.S
> +++ b/arch/arm64/kernel/entry.S
> @@ -24,6 +24,7 @@
>  #include <asm/assembler.h>
>  #include <asm/asm-offsets.h>
>  #include <asm/errno.h>
> +#include <asm/esr.h>
>  #include <asm/thread_info.h>
>  #include <asm/unistd.h>
>  #include <asm/unistd32.h>
> @@ -239,18 +240,18 @@ ENDPROC(el1_error_invalid)
>  el1_sync:
>       kernel_entry 1
>       mrs     x1, esr_el1                     // read the syndrome register
> -     lsr     x24, x1, #26                    // exception class
> -     cmp     x24, #0x25                      // data abort in EL1
> +     lsr     x24, x1, #ESR_EL1_EC_SHIFT      // exception class
> +     cmp     x24, #ESR_EL1_EC_DABT_EL1       // data abort in EL1
>       b.eq    el1_da
> -     cmp     x24, #0x18                      // configurable trap
> +     cmp     x24, #ESR_EL1_EC_SYS64          // configurable trap
>       b.eq    el1_undef
> -     cmp     x24, #0x26                      // stack alignment exception
> +     cmp     x24, #ESR_EL1_EC_SP_ALIGN       // stack alignment exception
>       b.eq    el1_sp_pc
> -     cmp     x24, #0x22                      // pc alignment exception
> +     cmp     x24, #ESR_EL1_EC_PC_ALIGN       // pc alignment exception
>       b.eq    el1_sp_pc
> -     cmp     x24, #0x00                      // unknown exception in EL1
> +     cmp     x24, #ESR_EL1_EC_UNKNOWN        // unknown exception in EL1
>       b.eq    el1_undef
> -     cmp     x24, #0x30                      // debug exception in EL1
> +     cmp     x24, #ESR_EL1_EC_BREAKPT_EL0    // debug exception in EL1

Not a problem with your patch as you just replaced the existing values
but shouldn't we have BREAKPT_EL1 here?

-- 
Catalin
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