Re: [Xen-devel] [PATCH v3 3/3] tools: introduce parameter max_wp_ram_ranges.

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 01.02.16 at 18:05, <Ian.Jackson@xxxxxxxxxxxxx> wrote:
> Having said that, if the hypervisor maintainers are happy with a
> situation where this value is configured explicitly, and the
> configurations where a non-default value is required is expected to be
> rare, then I guess we can live with it.

Well, from the very beginning I have been not very happy with
the introduction of this, and I still consider it half way acceptable
only because of not seeing any good alternative. If we look at
it strictly, it's in violation of the rule we set forth after XSA-77:
No introduction of new code making the system susceptible to
bad (malicious) tool stack behavior, and hence we should reject
it. Yet that would leave XenGT in a state where it would have no
perspective of ever getting merged, which doesn't seem very
desirable either.

Jan


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