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Re: [Qemu-devel] [PATCH v2] Add virt-v3 machine that uses GIC-500
From: |
Shlomo Pongratz |
Subject: |
Re: [Qemu-devel] [PATCH v2] Add virt-v3 machine that uses GIC-500 |
Date: |
Wed, 13 May 2015 10:34:31 +0000 |
> -----Original Message-----
> From: Pavel Fedin [mailto:address@hidden
> Sent: Tuesday, 12 May, 2015 3:33 PM
> To: Shlomo Pongratz; address@hidden
> Subject: RE: [PATCH v2] Add virt-v3 machine that uses GIC-500
>
> Hello!
>
> > BTW did you try going beyond 16 cores I had problems with 32 and 64 cores.
>
> Just tried it. Works fine, except qemu takes incredibly long time to start up
> with so many cores. 64 cores took something like 2 minutes. Indeed, looks
> like freeze, but if you're patient enough, you'll see it running. I believe
> it's
> interpretation mode flaw.
>
> Kind regards,
> Pavel Fedin
> Expert Engineer
> Samsung Electronics Research center Russia
>
Hi Pavel,
With your patch I can work up to 16 cores it gets stuck at 24 cores.
I have two questions regarding your changes.
1. In fdt_add_timer why you didn't used the 24 bit limit I posed on the
irqflags? Please note that the argument is 32 bits wide an 8 bits are for flags.
2. In machvirt_init, I used TYPE_AARCH64_CPU while you reverted it to
TYPE_ARM_CPU, I assume this is because you want to support cortex-a15. Don't
you think It should be according to the cortex type? (BTW you removed
cortex-a53).
Best regards,
S.P.
- [Qemu-devel] [PATCH v2] Add virt-v3 machine that uses GIC-500, Pavel Fedin, 2015/05/08
- Re: [Qemu-devel] [PATCH v2] Add virt-v3 machine that uses GIC-500, Shlomo Pongratz, 2015/05/11
- Re: [Qemu-devel] [PATCH v2] Add virt-v3 machine that uses GIC-500, Pavel Fedin, 2015/05/12
- Re: [Qemu-devel] [PATCH v2] Add virt-v3 machine that uses GIC-500, Shlomo Pongratz, 2015/05/12
- Re: [Qemu-devel] [PATCH v2] Add virt-v3 machine that uses GIC-500, Pavel Fedin, 2015/05/12
- Re: [Qemu-devel] [PATCH v2] Add virt-v3 machine that uses GIC-500,
Shlomo Pongratz <=
- Re: [Qemu-devel] [PATCH v2] Add virt-v3 machine that uses GIC-500, Pavel Fedin, 2015/05/13
- Re: [Qemu-devel] [PATCH v2] Add virt-v3 machine that uses GIC-500, Shlomo Pongratz, 2015/05/14
- Re: [Qemu-devel] [PATCH v2] Add virt-v3 machine that uses GIC-500, Pavel Fedin, 2015/05/14
Re: [Qemu-devel] [PATCH v2] Add virt-v3 machine that uses GIC-500, Pavel Fedin, 2015/05/12
Re: [Qemu-devel] [PATCH v2] Add virt-v3 machine that uses GIC-500, Daniel P. Berrange, 2015/05/12