Re: [Xen-devel] [PATCH 2/2] x86/emul: Bugfixes to SYSCALL emulation

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 20.12.16 at 13:14, <andrew.cooper3@xxxxxxxxxx> wrote:
> On 20/12/2016 08:22, Jan Beulich wrote:
>>>>> On 19.12.16 at 17:37, <andrew.cooper3@xxxxxxxxxx> wrote:
>> What I've been thinking the other day though is: Why
>> don't we put the whole SYSCALL emulation into a __XEN__
>> conditional (implying __x86_64__, i.e. allowing the inner ones
>> to be removed)?
> 
> This depends on whether we think it is ever realistic to be able to be
> able to test things like this in the userspace harness.  I am not sure
> we realistically can.

Well - it's all about register modifications, which we surely could
test. But this would be a rather contrived test, the usefulness of
which I would question.

Jan


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