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From: valmiki <valmikibow@gmail.com>
To: linux-pci <linux-pci@vger.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Cc: Bjorn Helgaas <helgaas@kernel.org>, Marc Zyngier <marc.zyngier@arm.com>
Subject: Why two irq chips for MSI
Date: Wed, 21 Mar 2018 22:42:36 +0530	[thread overview]
Message-ID: <81eb7191-1c5c-ad27-2714-9563e4ef7c68@gmail.com> (raw)

Hi,

In most of the RP drivers, why two irq chips are being used for MSI ?

One at irq_domain_set_info (which uses irq_compose_msi_msg and 
irq_set_affinity methods) and another being registered with struct 
msi_domain_info (which uses irq_mask/irq_unmask methods).

When will each chip be used w.r.t to virq ?

Thanks,
Valmiki

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             reply	other threads:[~2018-03-21 17:12 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-03-21 17:12 valmiki [this message]
2018-03-21 17:25 ` Marc Zyngier
2018-03-21 17:38   ` valmiki
2018-03-21 18:05     ` Marc Zyngier

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