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References: <20181008232756.30704-1-cota@braap.org>
	<87murnmh7j.fsf@linaro.org> <20181009143837.GA24820@flamenco>
From: Alex =?utf-8?Q?Benn=C3=A9e?= <alex.bennee@linaro.org>
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Date: Tue, 09 Oct 2018 15:45:36 +0100
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Subject: Re: [Qemu-devel] [RFC v2 0/5] Dynamic TLB sizing
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To: "Emilio G. Cota" <cota@braap.org>
Cc: qemu-devel@nongnu.org, Richard Henderson <richard.henderson@linaro.org>


Emilio G. Cota <cota@braap.org> writes:

> On Tue, Oct 09, 2018 at 13:34:40 +0100, Alex Benn=C3=A9e wrote:
>>
>> Emilio G. Cota <cota@braap.org> writes:
>>
>> > v1: https://lists.gnu.org/archive/html/qemu-devel/2018-10/msg01146.html
>> >
>> > Changes since v1:
>>
>> Hmm I'm seeing some qtest failures, for example:
>>
>>   $ make check-qtest-alpha V=3D1
>>   ...
>>   QTEST_QEMU_BINARY=3Dalpha-softmmu/qemu-system-alpha QTEST_QEMU_IMG=3Dq=
emu-img MALLOC_PERTURB_=3D${MALLOC_PERTURB_:-$(( ${RANDOM:-0} % 255 + 1))} =
gtester -k --verbose -m=3Dquick test
>>   s/boot-serial-test tests/qmp-test tests/qmp-cmd-test tests/device-intr=
ospect-test tests/cdrom-test tests/machine-none-test tests/qom-test tests/t=
est-hmp
>>   TEST: tests/boot-serial-test... (pid=3D31091)
>>     /alpha/boot-serial/clipper:                                         =
 Broken pipe
>>   tests/libqtest.c:129: kill_qemu() detected QEMU death from signal 11 (=
Segmentation fault) (core dumped)
>>   FAIL
>>   GTester: last random seed: R02S948c4a5112fd7682934f4d96e1aff38e
>>   (pid=3D31099)
>>   FAIL: tests/boot-serial-test
>
> I'm pretty sure that the problem is that tlb_init is not being
> called at all. Note that this applies to the tlb-lock series
> as well, although there we're just calling qemu_spin_init,
> which is not really necessary because CPUArchState is 0-allocated.
>
> I'll take a look.

Yeah I hadn't tried to bisect it, but I'm on top of tlb-lock-v4 as
requested.

--
Alex Benn=C3=A9e