From: Jingyi Wang <wangjingyi11@huawei.com>
To: Marc Zyngier <maz@kernel.org>
Cc: kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org
Subject: Re: [kvm-unit-tests PATCH v2 3/8] arm64: microbench: gic: Add gicv4.1 support for ipi latency test.
Date: Thu, 2 Jul 2020 17:29:38 +0800 [thread overview]
Message-ID: <3a1533a5-bf93-4ce9-2e5c-a5c0da4cc0cc@huawei.com> (raw)
In-Reply-To: <10c3562dc019a3440d82dd507918faef@kernel.org>
On 7/2/2020 5:17 PM, Marc Zyngier wrote:
> On 2020-07-02 10:02, Jingyi Wang wrote:
>> Hi Marc,
>>
>> On 7/2/2020 4:22 PM, Marc Zyngier wrote:
>>> On 2020-07-02 04:01, Jingyi Wang wrote:
>>>> If gicv4.1(sgi hardware injection) supported, we test ipi injection
>>>> via hw/sw way separately.
>>>
>>> nit: active-less SGIs are not strictly a feature of GICv4.1 (you could
>>> imagine a GIC emulation offering the same thing). Furthermore, GICv4.1
>>> isn't as such visible to the guest itself (it only sees a GICv3).
>>>
>>> Thanks,
>>>
>>> M.
>>
>> Yes, but to measure the performance difference of hw/sw SGI injection,
>> do you think it is acceptable to make it visible to guest and let it
>> switch SGI injection mode?
>
> It is of course acceptable. I simply object to the "GICv4.1" description.
>
> M.
Okay, maybe description like "GICv4.1 supported kvm" is better.
Thanks,
Jingyi
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next prev parent reply other threads:[~2020-07-02 9:29 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-02 3:01 [kvm-unit-tests PATCH v2 0/8] arm/arm64: Add IPI/LPI/vtimer latency test Jingyi Wang
2020-07-02 3:01 ` [kvm-unit-tests PATCH v2 1/8] arm64: microbench: get correct ipi received num Jingyi Wang
2020-07-02 12:36 ` Auger Eric
2020-07-02 3:01 ` [kvm-unit-tests PATCH v2 2/8] arm64: microbench: Use the funcions for ipi test as the general functions for gic(ipi/lpi/timer) test Jingyi Wang
2020-07-02 5:25 ` Andrew Jones
2020-07-02 8:21 ` Jingyi Wang
2020-07-02 12:36 ` Auger Eric
2020-07-02 3:01 ` [kvm-unit-tests PATCH v2 3/8] arm64: microbench: gic: Add gicv4.1 support for ipi latency test Jingyi Wang
2020-07-02 8:22 ` Marc Zyngier
2020-07-02 9:02 ` Jingyi Wang
2020-07-02 9:17 ` Marc Zyngier
2020-07-02 9:29 ` Jingyi Wang [this message]
2020-07-02 12:36 ` Auger Eric
2020-07-02 13:03 ` Marc Zyngier
2020-07-02 12:57 ` Auger Eric
2020-07-02 13:08 ` Marc Zyngier
2020-07-02 13:42 ` Auger Eric
2020-07-03 3:39 ` Jingyi Wang
2020-07-02 21:33 ` Andrew Jones
2020-07-02 3:01 ` [kvm-unit-tests PATCH v2 4/8] arm64: its: Handle its command queue wrapping Jingyi Wang
2020-07-02 13:01 ` Auger Eric
2020-07-02 3:01 ` [kvm-unit-tests PATCH v2 5/8] arm64: microbench: its: Add LPI latency test Jingyi Wang
2020-07-02 13:13 ` Auger Eric
2020-07-02 3:01 ` [kvm-unit-tests PATCH v2 6/8] arm64: microbench: Allow each test to specify its running times Jingyi Wang
2020-07-02 5:29 ` Andrew Jones
2020-07-02 8:46 ` Jingyi Wang
2020-07-02 13:17 ` Auger Eric
2020-07-02 3:01 ` [kvm-unit-tests PATCH v2 7/8] arm64: microbench: Add time limit for each individual test Jingyi Wang
2020-07-02 5:48 ` Andrew Jones
2020-07-02 8:47 ` Jingyi Wang
2020-07-02 13:23 ` Auger Eric
2020-07-03 3:42 ` Jingyi Wang
2020-07-02 3:01 ` [kvm-unit-tests PATCH v2 8/8] arm64: microbench: Add vtimer latency test Jingyi Wang
2020-07-02 5:44 ` Andrew Jones
2020-07-02 8:56 ` Jingyi Wang
2020-07-02 13:36 ` Auger Eric
2020-07-03 7:41 ` Jingyi Wang
2020-07-03 7:45 ` Auger Eric
2020-07-06 12:23 ` Jingyi Wang
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