From: Richard Henderson <rth@twiddle.net>
To: "Alex Bennée" <alex.bennee@linaro.org>
Cc: qemu-devel <qemu-devel@nongnu.org>,
Pranith Kumar <bobby.prani@gmail.com>
Subject: Re: [Qemu-devel] target-alpha mttcg success
Date: Sun, 13 Nov 2016 12:03:20 +0100 [thread overview]
Message-ID: <a95ad023-c033-ffe7-c933-233a6d5768ae@twiddle.net> (raw)
In-Reply-To: <878tsnafcn.fsf@linaro.org>
On 11/13/2016 10:39 AM, Alex Bennée wrote:
>> There does appear to be a problem with delivery of ISA interrupts for smp,
>> regardless whether mttcg is enabled or not, though PCI interrupts are working
>> fine. This appears in that both serial console and ps2 keyboard are
>> non-responsive, but one can ssh into the guest. Which doesn't make a whole lot
>> of sense. More debugging required, I suppose.
>
> Hmm weird. I was helping Pranith with debugging one of his aarch64 guest
> setups under TCG and it seemed to be loosing IRQs, I could see level=1
> breakpoints being hit in qemu_set_irq but no delivery of the IRQ to the
> CPU. Unfortunately I had to head home before we got to the bottom of it
> but I wonder if it is related.
Interesting. Please keep me in the loop on that one.
> As far as the core code is concerned IRQ updates should be protected by
> the BQL.
Good, that confirms what I remembered on the subject.
r~
prev parent reply other threads:[~2016-11-13 11:03 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-11-12 16:57 [Qemu-devel] target-alpha mttcg success Richard Henderson
2016-11-13 9:39 ` Alex Bennée
2016-11-13 11:03 ` Richard Henderson [this message]
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