From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Richard Henderson <rth@twiddle.net>,
qemu-devel@nongnu.org, qemu-ppc@nongnu.org
Cc: David Gibson <david@gibson.dropbear.id.au>,
Paul Mackerras <pmac@au1.ibm.com>,
Anton Blanchard <anton@au1.ibm.com>,
Fabien Chouteau <chouteau@adacore.com>,
Tristan Gingold <gingold@adacore.com>
Subject: Re: [Qemu-devel] ppc: TCG and FP exceptions, is it right ?
Date: Tue, 26 Jul 2016 07:38:34 +1000 [thread overview]
Message-ID: <1469482714.5978.50.camel@kernel.crashing.org> (raw)
In-Reply-To: <a2742396-81df-79da-f4ff-1361b8cc50c9@twiddle.net>
On Mon, 2016-07-25 at 19:05 +0530, Richard Henderson wrote:
> > An additional note is that if FE0/FE1 are 0, we still in some case
> > leave an exception behind in cs->exception_index. Now, I *think*
> > that's ok, it will just be silently dropped at some point, but I am not
> > 100% certain as that's a part of TCG I'm an not super familiar with
> > yet.
>
> That should be fine. All exits from the loop should set a new value here as
> they exit.
Right though it *might* interact with the trace exception code (single
step), I'll have at to dig a bit.
I suspect I need to produce test cases :-)
Cheers,
Ben.
next prev parent reply other threads:[~2016-07-25 21:39 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-07-25 9:44 [Qemu-devel] ppc: TCG and FP exceptions, is it right ? Benjamin Herrenschmidt
2016-07-25 13:35 ` Richard Henderson
2016-07-25 21:38 ` Benjamin Herrenschmidt [this message]
2016-07-25 15:12 ` Tristan Gingold
2016-07-25 21:50 ` Benjamin Herrenschmidt
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