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From: valmiki <valmikibow@gmail.com>
To: linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org
Cc: helgaas@kernel.org, marc.zyngier@arm.com, arnd@arndb.de,
	mark.rutland@arm.com
Subject: Need clarity on MSI handling in RC driver
Date: Wed, 4 Jan 2017 23:09:06 +0530	[thread overview]
Message-ID: <307e8512-7e14-39a2-c225-6db44e443aea@gmail.com> (raw)
In-Reply-To: <2fea5a0c-7410-97fd-91d1-ae6a06ab1a52@gmail.com>

Hi All,

I have a doubt, the MSI domains are handled differently in different RC 
drivers.

Some drivers use irq_domain_add_linear alone, and some use 
pci_msi_create_irq_domain also to handle MSI.

In most of the 32-bit architectures only irq_domain_add_linear is used 
and in 64 bit drivers both pci_msi_create_irq_domain and 
irq_domain_add_linear are used.

So is this because of architecture difference between ARM and ARM64 ?

Thanks & Regards,
valmiki

  parent reply	other threads:[~2017-01-04 17:39 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-01-04  3:17 Need clarity on PCIe MSI interrupt in device tree valmiki
2017-01-04  8:29 ` Marc Zyngier
2017-01-04 17:28   ` valmiki
2017-01-04 10:05 ` Mark Rutland
2017-01-04 17:29   ` valmiki
2017-01-04 17:39 ` valmiki [this message]
2017-01-04 17:46   ` Need clarity on MSI handling in RC driver Marc Zyngier
2017-01-06  2:30     ` valmiki

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