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Re: [RFC PATCH v3 20/28] target/arm: Set cortex-a57 as default cpu for K
From: |
Fabiano Rosas |
Subject: |
Re: [RFC PATCH v3 20/28] target/arm: Set cortex-a57 as default cpu for KVM-only build |
Date: |
Fri, 13 Jan 2023 13:22:16 -0300 |
Claudio Fontana <cfontana@suse.de> writes:
> On 1/13/23 15:04, Fabiano Rosas wrote:
>> The cortex-a15 is not present anymore when CONFIG_TCG=n, so use the
>> cortex-a57 as default cpu for KVM.
>>
>> Signed-off-by: Fabiano Rosas <farosas@suse.de>
>
> Our recommendation currently for KVM on ARM is to always use CPU="host", as
> named cpu models generally don't work (yet?) with KVM.
>
> https://qemu-project.gitlab.io/qemu/system/arm/cpu-features.html
>
> Should then "host" be the default for KVM if CONFIG_TCG=N or CONFIG_TCG=M and
> the TCG .so is not loaded?
Yes, "host" seems to make more sense. I was under the impression that
there was a way to use cortex-a57 and cortex-a53 since they have
cpu->kvm_target set.
[RFC PATCH v3 22/28] tests/qtest: Restrict bcm2835-dma-test to CONFIG_RASPI, Fabiano Rosas, 2023/01/13