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Re: [RFC PATCH 1/2] x86: PCI bus specific MSI operations

From Thomas Gleixner <tglx@linutronix.de>
Newsgroups linux.kernel
Subject Re: [RFC PATCH 1/2] x86: PCI bus specific MSI operations
Date 2015-08-28 19:00 +0200
Message-ID <q2var-FH-27@gated-at.bofh.it> (permalink)
References <q2dZU-1aQ-15@gated-at.bofh.it> <q2dZV-1aQ-39@gated-at.bofh.it>
Organization linux.* mail to news gateway

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On Thu, 27 Aug 2015, Keith Busch wrote:

> This patch adds struct x86_msi_ops to x86's PCI sysdata. This gives a
> host bridge driver the option to provide alternate MSI Data Register
> and MSI-X Table Entry programming for devices in PCI domains that do
> not subscribe to usual "IOAPIC" format.

I'm not too fond about more ad hoc indirection and special casing. We
should be able to handle this with hierarchical irq domains. Jiang
might have an idea how to do that for your case.

Thanks,

	tglx
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Thread

[RFC PATCH 1/2] x86: PCI bus specific MSI operations Keith Busch <keith.busch@intel.com> - 2015-08-28 00:40 +0200
  Re: [RFC PATCH 1/2] x86: PCI bus specific MSI operations Thomas Gleixner <tglx@linutronix.de> - 2015-08-28 19:00 +0200
    Re: [RFC PATCH 1/2] x86: PCI bus specific MSI operations Keith Busch <keith.busch@intel.com> - 2015-08-28 23:40 +0200
    Re: [RFC PATCH 1/2] x86: PCI bus specific MSI operations Jiang Liu <jiang.liu@linux.intel.com> - 2015-08-29 03:50 +0200

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