From: Julien Grall <julien.grall@linaro.org>
To: Pavlo Suikov <pavlo.suikov@globallogic.com>
Cc: Stefano Stabellini <stefano.stabellini@eu.citrix.com>,
Ian Campbell <ian.campbell@citrix.com>,
xen-devel@lists.xen.org
Subject: Re: xentrace, arm, hvm
Date: Tue, 04 Feb 2014 13:31:20 +0000 [thread overview]
Message-ID: <52F0EBA8.3000206@linaro.org> (raw)
In-Reply-To: <CAE4oM6ypZH_mgg7kuJJsKzPXRhy==HS2zw2pCx2VUHEP+i_D=w@mail.gmail.com>
On 04/02/14 12:39, Pavlo Suikov wrote:
> Well,
Hello,
Ian/Stefano may have a better answer than me on this part :).
> > To support xentrace on ARM, we will need at least:
>
> I would readily do that if you give me some directions on where to look
> at, or a high-level explanation of:
>
> > - to replace rcu_lock_domain_by_any_id() by a a similar function
>
> What semantics should this function have?
I would copy in part get_pg_owner (arch/x86/mm/mm.c) in the ARM code.
The check "unlikely(paging_mode_translate(curr))" will always fail on ARM.
> > - to add stubs for trace in arm code
>
> Is there an example of what functionality should be stubbed in arm code?
>
You can look at __trace_hypercall_entry on x86, and x86/entry.S where
the function is called.
Sincerely yours,
--
Julien Grall
next prev parent reply other threads:[~2014-02-04 13:31 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-02-03 17:32 xentrace, arm, hvm Pavlo Suikov
2014-02-03 20:32 ` Julien Grall
2014-02-04 12:39 ` Pavlo Suikov
2014-02-04 13:31 ` Julien Grall [this message]
2014-02-04 13:57 ` Ian Campbell
2014-02-08 15:51 ` Pavlo Suikov
2014-02-08 16:53 ` Julien Grall
2014-02-08 21:04 ` Julien Grall
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