Re: [Xen-devel] [PATCH] tests/xen-access: Added vm_event emulation tests

[Wei Liu <wei.liu2@xxxxxxxxxx>]

On Mon, Apr 10, 2017 at 12:44:45PM +0300, Razvan Cojocaru wrote:
> This patch adds support for testing instruction emulation when
> required by the vm_event reply sent for MEM_ACCESS events. To this
> end, it adds the "emulate_write" and "emulate_exec" parameters
> that behave like the old "write" and "exec" parameters, except
> instead of allowing writes / executes for a hit page, they emulate
> the trigger instruction. The new parameters don't mark all of the
> guest's pages, instead they stop at the arbitrary low limit of
> the first 1000 pages - otherwise the guest would slow to a crawl.
> Since the emulator is still incomplete and has trouble with
> emulating competing writes in SMP scenarios, the new tests are
> only meant for debugging issues.
> 
> Signed-off-by: Razvan Cojocaru <rcojocaru@xxxxxxxxxxxxxxx>

FAOD this should be acked by Tamas.

I also suggest you repost this once the development window opens,
regardless whether it is acked or not.

Wei.

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