linux-kernel - Re: [PATCH v4 16/17] x86/ioapic: export a few functions and data structures via io

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Message-ID: <20210109163811.o7fdhjzjg6m4hawo@liuwe-devbox-debian-v2>
Date:   Sat, 9 Jan 2021 16:38:11 +0000
From:   Wei Liu <wei.liu@...nel.org>
To:     Linux on Hyper-V List <linux-hyperv@...r.kernel.org>
Cc:     virtualization@...ts.linux-foundation.org,
        Linux Kernel List <linux-kernel@...r.kernel.org>,
        Michael Kelley <mikelley@...rosoft.com>,
        Vineeth Pillai <viremana@...ux.microsoft.com>,
        Sunil Muthuswamy <sunilmut@...rosoft.com>,
        Nuno Das Neves <nunodasneves@...ux.microsoft.com>,
        Wei Liu <wei.liu@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        "maintainer:X86 ARCHITECTURE (32-BIT AND 64-BIT)" <x86@...nel.org>,
        "H. Peter Anvin" <hpa@...or.com>,
        David Woodhouse <dwmw@...zon.co.uk>,
        Joerg Roedel <jroedel@...e.de>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        "Gustavo A. R. Silva" <gustavoars@...nel.org>,
        Jon Derrick <jonathan.derrick@...el.com>
Subject: Re: [PATCH v4 16/17] x86/ioapic: export a few functions and data
 structures via io_apic.h

On Wed, Jan 06, 2021 at 08:33:49PM +0000, Wei Liu wrote:
> We are about to implement an irqchip for IO-APIC when Linux runs as root
> on Microsoft Hypervisor. At the same time we would like to reuse
> existing code as much as possible.
> 
> Move mp_chip_data to io_apic.h and make a few helper functions
> non-static.
> 
> No functional change.
> 
> Signed-off-by: Wei Liu <wei.liu@...nel.org>

This patch can be dropped. I've figured out a much cleaner way to handle
IO-APIC due to recent changes.

Wei.