-----Original Message-----
From: Robin Getz [mailto:[email protected]]
Sent: 6/24/2010 (星期四) 6:28 上午
To: [email protected]
Cc: [email protected]
Subject: Re: [Linux-kernel-commits] [8930] trunk/arch/blackfin/kernel/ptrace.c:
bug [#6070]: permit to access scratchpad sram stack gdb
On Mon 21 Jun 2010 06:19, [email protected] pondered:
> Modified: trunk/arch/blackfin/kernel/ptrace.c (8929 => 8930)
>
>
> --- trunk/arch/blackfin/kernel/ptrace.c 2010-06-21 03:21:30 UTC (rev 8929)
> +++ trunk/arch/blackfin/kernel/ptrace.c 2010-06-21 10:19:50 UTC (rev 8930)
> @@ -27,6 +27,7 @@
> #include <asm/fixed_code.h>
> #include <asm/cacheflush.h>
> #include <asm/mem_map.h>
> +#include <asm/mmu_context.h>
>
> /*
> * does not yet catch signals sent when the child dies.
> @@ -135,6 +136,13 @@
> if (start >= FIXED_CODE_START && start + len < FIXED_CODE_END)
> return 0;
>
> +#ifdef CONFIG_APP_STACK_L1
> + if (child->mm->context.l1_stack_save)
> + if (start >= (unsigned long)l1_stack_base &&
> + start + len < (unsigned long)l1_stack_base +
> l1_stack_len)
> + return 0;
> +#endif
> +
> Does this need to have the #ifdef/stack check? or should we just allow
> scratchpad all the time?
I guess we can allow scratchpad all the time. Whether there is L1 stack depends
on applications, not kernel.
That means we will delete this configuration option and related references.
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