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Re: [PATCH v5 9/9] target/arm/kvm: host cpu: Add support for sve<N> prop
From: |
Richard Henderson |
Subject: |
Re: [PATCH v5 9/9] target/arm/kvm: host cpu: Add support for sve<N> properties |
Date: |
Tue, 1 Oct 2019 10:59:54 -0700 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.8.0 |
On 10/1/19 5:58 AM, Andrew Jones wrote:
> Allow cpu 'host' to enable SVE when it's available, unless the
> user chooses to disable it with the added 'sve=off' cpu property.
> Also give the user the ability to select vector lengths with the
> sve<N> properties. We don't adopt 'max' cpu's other sve property,
> sve-max-vq, because that property is difficult to use with KVM.
> That property assumes all vector lengths in the range from 1 up
> to and including the specified maximum length are supported, but
> there may be optional lengths not supported by the host in that
> range. With KVM one must be more specific when enabling vector
> lengths.
>
> Signed-off-by: Andrew Jones <address@hidden>
> Reviewed-by: Eric Auger <address@hidden>
> ---
Reviewed-by: Richard Henderson <address@hidden>
r~
- [PATCH v5 3/9] target/arm: Allow SVE to be disabled via a CPU property, (continued)
- [PATCH v5 3/9] target/arm: Allow SVE to be disabled via a CPU property, Andrew Jones, 2019/10/01
- [PATCH v5 4/9] target/arm/cpu64: max cpu: Introduce sve<N> properties, Andrew Jones, 2019/10/01
- [PATCH v5 6/9] target/arm/kvm64: max cpu: Enable SVE when available, Andrew Jones, 2019/10/01
- [PATCH v5 9/9] target/arm/kvm: host cpu: Add support for sve<N> properties, Andrew Jones, 2019/10/01
- Re: [PATCH v5 9/9] target/arm/kvm: host cpu: Add support for sve<N> properties,
Richard Henderson <=
- [PATCH v5 5/9] target/arm/kvm64: Add kvm_arch_get/put_sve, Andrew Jones, 2019/10/01
- [PATCH v5 7/9] target/arm/kvm: scratch vcpu: Preserve input kvm_vcpu_init features, Andrew Jones, 2019/10/01
- [PATCH v5 8/9] target/arm/cpu64: max cpu: Support sve properties with KVM, Andrew Jones, 2019/10/01