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Re: [Qemu-devel] [PATCH v3 00/11] hw: arm: exynos: Bring up secondary CP


From: Peter Maydell
Subject: Re: [Qemu-devel] [PATCH v3 00/11] hw: arm: exynos: Bring up secondary CPU, QOM-ify Soc, other improvements
Date: Thu, 1 Jun 2017 18:23:10 +0100

On 1 June 2017 at 18:10, Krzysztof Kozlowski <address@hidden> wrote:
> On Thu, Jun 01, 2017 at 05:31:41PM +0100, Peter Maydell wrote:
>> It sounds like it breaks a key thing, ie "boot a single cpu kernel
>> built from a defconfig", though. That's a regression I'd rather
>> not have.
>
> I am not sure if I understand you correctly... the system previously
> booted into one CPU mode because second CPU just could not boot. Now by
> default, second CPU succeeds and this means that *default* settings are
> indeed more broken than before.
>
> On the other hand, after removing a line from hw/arm/exynos4210.c:
>         qdev_prop_set_uint32(dev, "num-cpu", EXYNOS4210_NCPUS);
> and running qemu with "-accel tcg -smp cpus=1,maxcpus=1,cores=1"
> everything is okay. Booting of one CPU is unaffected.

Ah, I see now.

>> If there's a subset of these patches which don't break
>> that I'm happy to take those. Otherwise we need to investigate
>> and fix whatever the problem is that causes that unresponsiveness
>> before we can apply them.
>
> Yes, you can take everything except first patch
> ("hw/intc/exynos4210_gic: Fix GIC memory mappings for secondary CPU")
> and it should be fine. Rest of patches are just independent.

Can you send a series which has just the patches that don't break,
please? I think this series needs a respin anyway because of the
make check problems (noted on the other thread).

thanks
-- PMM



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