Re: [Xen-devel] [PATCH v6 1/4] x86/xen: Probe target addresses in set_aliased_prot before the hypercall

[David Vrabel <david.vrabel@xxxxxxxxxx>]

On 30/07/15 22:31, Andy Lutomirski wrote:
> The update_va_mapping hypercall can fail if the VA isn't present in
> the guest's page tables.  Under certain loads, this can result in an
> OOPS when the target address is in unpopulated vmap space.
> 
> While we're at it, add comments to help explain what's going on.
> 
> This isn't a great long-term fix.  This code should probably be
> changed to use something like set_memory_ro.

Reviewed-by: David Vrabel <david.vrabel@xxxxxxxxxx>

Thanks.

David

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