Messages in this thread | | | Date | Wed, 1 Oct 2003 09:41:42 +0200 | From | Andi Kleen <> | Subject | Re: [PATCH] Mutilated form of Andi Kleen's AMD prefetch errata patch |
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On Wed, Oct 01, 2003 at 08:31:32AM +0100, Jamie Lokier wrote: > doesn't that fix the problem and while also being an improvement in > lots of other ways? The only reason it wouldn't work is if the VMA > list can contain regions >= TASK_SIZE, but I don't think that is done.
vsyscalls has at least one vma > TASK_SIZE for ptrace, but it is afaik not included in the vma tree.
> search_exception_table doesn't take any locks for non-module entries, > so it can fixup the __get_user in __is_prefetch when that occurs > inside locked regions of the kernel.
Hmm. Good point. Yes, I agree the check could be removed now.
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