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[SPARC64]: flush_ptrace_access() needs preemption disable.

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Based upon a report by Mariusz Kozlowski.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2008-03-26 04:51:12 -07:00
parent e5ac71f255
commit f6a843d939
1 changed files with 4 additions and 0 deletions
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4
arch/sparc64/kernel/ptrace.c
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@ -70,6 +70,8 @@ void flush_ptrace_access(struct vm_area_struct *vma, struct page *page,
if (tlb_type == hypervisor)
return;
preempt_disable();
#ifdef DCACHE_ALIASING_POSSIBLE
/* If bit 13 of the kernel address we used to access the
* user page is the same as the virtual address that page
@ -108,6 +110,8 @@ void flush_ptrace_access(struct vm_area_struct *vma, struct page *page,
for (; start < end; start += icache_line_size)
flushi(start);
}
preempt_enable();
}
enum sparc_regset {