linux-kernel - Re: [EXTERNAL] [tip: x86/apic] x86/io_apic: Cleanup trigger/polarity helpers

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Date:   Wed, 11 Nov 2020 12:32:10 +0000
From:   David Woodhouse <dwmw2@...radead.org>
To:     Thomas Gleixner <tglx@...utronix.de>,
        Tom Lendacky <thomas.lendacky@....com>,
        Borislav Petkov <bp@...en8.de>
Cc:     linux-kernel@...r.kernel.org, x86 <x86@...nel.org>,
        Qian Cai <cai@...hat.com>, Joerg Roedel <joro@...tes.org>
Subject: Re: [EXTERNAL] [tip: x86/apic] x86/io_apic: Cleanup
 trigger/polarity helpers

On Wed, 2020-11-11 at 10:36 +0000, David Woodhouse wrote:
> On Wed, 2020-11-11 at 10:46 +0100, Thomas Gleixner wrote:
> > Looking at it now with brain awake, the XTSUP stuff is pretty much
> > the same as DMAR, which I didn't realize yesterday. The affinity
> > notifier muck is not needed when we have a write_msg() function which
> > twiddles the bits into those other locations.
> 
> I kind of hate the fact that it's swizzling those bits through invalid
> MSI messages, so I did it as its own irqdomain using
> irq_domain_create_hierarchy() directly instead of
> msi_create_irq_domain().

Please give this a spin:

https://git.infradead.org/users/dwmw2/linux.git/shortlog/refs/heads/amdvi

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