linux-kernel - Supporting more IRQs than NR

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Message-ID: <5B2CB5C7.1020801@huawei.com>
Date:   Fri, 22 Jun 2018 16:39:35 +0800
From:   Yang Yingliang <yangyingliang@...wei.com>
To:     Marc Zyngier <marc.zyngier@....com>
CC:     Hanjun Guo <guohanjun@...wei.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>, <xuehuahu@...ilicon.com>
Subject: Supporting more IRQs than NR_IRQS + 8196 on ARM64 server

Hi, Marc
     Current system only supports (NR_IRQS + 8196) interrupts.  It's not 
enough on ARM64
server, on D06 we have several pcie devices and each device supports 256 
VMs and each
VM uses 64 interrupts. Can we set NR_IRQS to a bigger value to support 
more interrupts ?

Thanks,
Yang