Re: [patch 2/2] x86 NMI-safe INT3 and Page Fault

[Avi Kivity]

On 07/16/2010 09:17 PM, H. Peter Anvin wrote:
> > I think the concern here is about an NMI handler's code running in
> > vmalloc space, or is it something else?
> >
> >      
> Code or data, yes; including percpu data.
>    

Use kmalloc and percpu pointers, it's not that onerous.

Oh, and you can access vmalloc space by switching cr3 temporarily to 
init_mm's, no?  Obviously not a very performant solution, at least 
without PCIDs, but can be used if needed.

--
I have a truly marvellous patch that fixes the bug which this
signature is too narrow to contain.

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/