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From: Marc Zyngier <maz@kernel.org>
To: Zenghui Yu <yuzenghui@huawei.com>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>,
	Jason Cooper <jason@lakedaemon.net>,
	kvm@vger.kernel.org, linux-kernel@vger.kernel.org,
	Robert Richter <rrichter@marvell.com>,
	Thomas Gleixner <tglx@linutronix.de>,
	kvmarm@lists.cs.columbia.edu,
	linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH v4 06/20] irqchip/gic-v4.1: Add initial SGI configuration
Date: Tue, 18 Feb 2020 09:46:10 +0000
Message-ID: <4a64bf17c015cb10e62d9c1a1ff64db5@kernel.org> (raw)
In-Reply-To: <e47baffb-83a5-57d7-1721-eaee28aaaabf@huawei.com>

Hi Zenghui,

On 2020-02-18 07:25, Zenghui Yu wrote:
> Hi Marc,

[...]

>>     static void its_sgi_irq_domain_deactivate(struct irq_domain 
>> *domain,
>>   					  struct irq_data *d)
>>   {
>> -	/* Nothing to do */
>> +	struct its_vpe *vpe = irq_data_get_irq_chip_data(d);
>> +
>> +	vpe->sgi_config[d->hwirq].enabled = false;
>> +	its_configure_sgi(d, true);
> 
> The spec says, when C==1, VSGI clears the pending state of the vSGI,
> leaving the configuration unchanged.  So should we first clear the
> pending state and then disable vSGI (let E==0)?

Right you are again. We need two commands, not just one (the pseudocode 
is
pretty explicit).

Thanks,

         M.
-- 
Jazz is not dead. It just smells funny...
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Thread overview: 48+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-02-14 14:57 [PATCH v4 00/20] irqchip/gic-v4: GICv4.1 architecture support Marc Zyngier
2020-02-14 14:57 ` [PATCH v4 01/20] irqchip/gic-v4.1: Skip absent CPUs while iterating over redistributors Marc Zyngier
2020-02-17  9:11   ` Zenghui Yu
2020-02-14 14:57 ` [PATCH v4 02/20] irqchip/gic-v3: Use SGIs without active state if offered Marc Zyngier
2020-02-17  9:18   ` Zenghui Yu
2020-02-14 14:57 ` [PATCH v4 03/20] irqchip/gic-v4.1: Advertise support v4.1 to KVM Marc Zyngier
2020-02-17  9:09   ` Zenghui Yu
2020-02-14 14:57 ` [PATCH v4 04/20] irqchip/gic-v4.1: Map the ITS SGIR register page Marc Zyngier
2020-02-20  3:17   ` Zenghui Yu
2020-02-14 14:57 ` [PATCH v4 05/20] irqchip/gic-v4.1: Plumb skeletal VSGI irqchip Marc Zyngier
2020-02-20  3:21   ` Zenghui Yu
2020-02-14 14:57 ` [PATCH v4 06/20] irqchip/gic-v4.1: Add initial SGI configuration Marc Zyngier
2020-02-18  7:25   ` Zenghui Yu
2020-02-18  9:46     ` Marc Zyngier [this message]
2020-02-20  3:25       ` Zenghui Yu
2020-02-14 14:57 ` [PATCH v4 07/20] irqchip/gic-v4.1: Plumb mask/unmask SGI callbacks Marc Zyngier
2020-02-20  3:32   ` Zenghui Yu
2020-02-14 14:57 ` [PATCH v4 08/20] irqchip/gic-v4.1: Plumb get/set_irqchip_state " Marc Zyngier
2020-02-18  7:00   ` Zenghui Yu
2020-02-18  9:27     ` Marc Zyngier
2020-02-18 15:31       ` Marc Zyngier
2020-02-19 11:50         ` Zenghui Yu
2020-02-19 15:18           ` Zenghui Yu
2020-02-20  3:11         ` Zenghui Yu
2020-02-28 19:37           ` Marc Zyngier
2020-03-01 19:00             ` Marc Zyngier
2020-03-02  8:18               ` Zenghui Yu
2020-03-02 12:09                 ` Marc Zyngier
2020-03-02 14:21                   ` Bill Barrow
2020-02-14 14:57 ` [PATCH v4 09/20] irqchip/gic-v4.1: Plumb set_vcpu_affinity " Marc Zyngier
2020-02-20  3:37   ` Zenghui Yu
2020-02-28 19:00     ` Marc Zyngier
2020-02-14 14:57 ` [PATCH v4 10/20] irqchip/gic-v4.1: Move doorbell management to the GICv4 abstraction layer Marc Zyngier
2020-02-14 14:57 ` [PATCH v4 11/20] irqchip/gic-v4.1: Add VSGI allocation/teardown Marc Zyngier
2020-02-14 14:57 ` [PATCH v4 12/20] irqchip/gic-v4.1: Add VSGI property setup Marc Zyngier
2020-02-14 14:57 ` [PATCH v4 13/20] irqchip/gic-v4.1: Eagerly vmap vPEs Marc Zyngier
2020-02-14 14:57 ` [PATCH v4 14/20] KVM: arm64: GICv4.1: Let doorbells be auto-enabled Marc Zyngier
2020-02-14 14:57 ` [PATCH v4 15/20] KVM: arm64: GICv4.1: Add direct injection capability to SGI registers Marc Zyngier
2020-02-18  8:46   ` Zenghui Yu
2020-02-18  9:41     ` Marc Zyngier
2020-02-14 14:57 ` [PATCH v4 16/20] KVM: arm64: GICv4.1: Allow SGIs to switch between HW and SW interrupts Marc Zyngier
2020-02-20  3:55   ` Zenghui Yu
2020-02-28 19:16     ` Marc Zyngier
2020-03-02  2:40       ` Zenghui Yu
2020-02-14 14:57 ` [PATCH v4 17/20] KVM: arm64: GICv4.1: Plumb SGI implementation selection in the distributor Marc Zyngier
2020-02-14 14:57 ` [PATCH v4 18/20] KVM: arm64: GICv4.1: Reload VLPI configuration on distributor enable/disable Marc Zyngier
2020-02-14 14:57 ` [PATCH v4 19/20] KVM: arm64: GICv4.1: Allow non-trapping WFI when using HW SGIs Marc Zyngier
2020-02-14 14:57 ` [PATCH v4 20/20] KVM: arm64: GICv4.1: Expose HW-based SGIs in debugfs Marc Zyngier

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