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Blackfin: drop ptrace() write support for fixed code/bootrom 

These regions are either read-only and won't work anyways (bootrom), or
we don't want people screwing with them because they're shared between
all processes (fixed code).

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
This commit is contained in:
Mike Frysinger 2009-11-25 05:39:03 +00:00
parent e187837b6f
commit 340a1be1ee
1 changed files with 0 additions and 13 deletions
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13
arch/blackfin/kernel/ptrace.c
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@ -316,19 +316,6 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
case BFIN_MEM_ACCESS_CORE_ONLY: case BFIN_MEM_ACCESS_CORE_ONLY:
copied = access_process_vm(child, addr, &data, copied = access_process_vm(child, addr, &data,
to_copy, 1); to_copy, 1);
if (copied)
break;
/* hrm, why didn't that work ... maybe no mapping */
if (addr >= FIXED_CODE_START &&
addr + to_copy <= FIXED_CODE_END) {
copy_to_user_page(0, 0, 0, paddr, &data, to_copy);
copied = to_copy;
} else if (addr >= BOOT_ROM_START) {
memcpy(paddr, &data, to_copy);
copied = to_copy;
}
break; break;
case BFIN_MEM_ACCESS_DMA: case BFIN_MEM_ACCESS_DMA:
if (safe_dma_memcpy(paddr, &data, to_copy)) if (safe_dma_memcpy(paddr, &data, to_copy))