From mboxrd@z Thu Jan 1 00:00:00 1970 From: Aravind Gopalakrishnan Subject: Re: [RFT Part2 v2 00/24] Enable hierarchy irqdomian on x86 platforms Date: Fri, 26 Sep 2014 11:30:30 -0500 Message-ID: <542594A6.4040504@amd.com> References: <1411740145-30626-1-git-send-email-jiang.liu@linux.intel.com> <20140926142931.GA10066@nazgul.tnic> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8"; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20140926142931.GA10066@nazgul.tnic> Sender: linux-pci-owner@vger.kernel.org To: Borislav Petkov , Jiang Liu Cc: Benjamin Herrenschmidt , Thomas Gleixner , Ingo Molnar , "H. Peter Anvin" , "Rafael J. Wysocki" , Bjorn Helgaas , Randy Dunlap , Yinghai Lu , Grant Likely , Marc Zyngier , Konrad Rzeszutek Wilk , Andrew Morton , Tony Luck , Joerg Roedel , Greg Kroah-Hartman , x86@kernel.org, linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, linux-acpi@vger.kernel.org, linux-arm-kernel@lists.infradead.org List-Id: linux-acpi@vger.kernel.org On 9/26/2014 9:29 AM, Borislav Petkov wrote: > On Fri, Sep 26, 2014 at 10:02:01PM +0800, Jiang Liu wrote: >> We plan to restructure x86 interrupt code based on hierarchy irqdomain, >> that is to build irqdomains for CPU vector, interrupt remapping unit, >> IOAPIC, MSI and HPET etc and organize those irqdomains in hierarchy mode. >> Each irqdomain manages corresponding interrupt controller and talks to >> parent interrupt controller through public irqdomain interfaces. We also >> support stacked irq_chip based on hierarchy irqdomain. It will make the >> x86 interrupt architecture much more clear and more easy to maintain >> with hierarchy irqdomain and stacked irq_chip. It may also help ARM >> interrupt management architecture too. >> >> This is the second patch set to enable support of hierarchy irqdomain >> on x86 platforms. It depends on the first part at: >> https://lkml.org/lkml/2014/9/26/501 >> And you may access it at: >> https://github.com/jiangliu/linux.git irqdomain/p2v2 >> >> And there will be a third patch set to convert IOAPIC driver to support >> hierarchy irqdomain and clean up code. >> >> The first patch extends irqdomain interfaces to support hierarchy >> irqdomain. Hope this interface could be used by other architectures too, >> such as ARM/ARM64. >> The second patch introduces two helper functions to support stacked >> irq_chip. >> Patch 3-9 implements an irqdomain to manange CPU interrupt vectors, and >> it's the root irqdomain for x86 platforms. >> Patch 10-13 converts Intel and AMD interrupt remapping drivers to >> support hierarchy irqdomain. >> Patch 14-16 converts HPET and MSI to support hierarchy irqdomain. >> Patch 17-20 cleans up unsued code in x86 arch and interrupt remapping >> drivers. >> Patch 21-24 converts DMAR, HTIRQ and UV to support hierarchy irqdomain. >> >> We have tested this patchset on Intel 32-bit and 64-bit systems. And it >> also passes Fengguang's 0day tests. But helps are need for testing: >> 1) AMD interrupt remapping >> 2) AMD HT_IRQ > Adding Aravind. > > @Aravind: you might want to give that patchset a run just in case, to > make sure it doesn't break anything on AMD. You'll need the previous > patchset to go before too, though: > > https://lkml.kernel.org/r/1411738196-29958-1-git-send-email-jiang.liu@linux.intel.com Sure, Will help testing these. > I'm sure Jiang will help you if you have more questions. > > Okay, I shall start looking into the patches and RFH as needed. -Aravind.