linux-kernel - RE: [PATCH] [v2] x86: apic: avoid -Wshadow warning in header

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Date:   Thu, 29 Oct 2020 16:30:19 +0000
From:   David Laight <David.Laight@...LAB.COM>
To:     'Arnd Bergmann' <arnd@...nel.org>,
        Paolo Bonzini <pbonzini@...hat.com>
CC:     Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        the arch/x86 maintainers <x86@...nel.org>,
        Arnd Bergmann <arnd@...db.de>,
        "K. Y. Srinivasan" <kys@...rosoft.com>,
        Haiyang Zhang <haiyangz@...rosoft.com>,
        Stephen Hemminger <sthemmin@...rosoft.com>,
        "H. Peter Anvin" <hpa@...or.com>,
        "Rafael J. Wysocki" <rjw@...ysocki.net>,
        Vitaly Kuznetsov <vkuznets@...hat.com>,
        "Wanpeng Li" <wanpengli@...cent.com>,
        Jim Mattson <jmattson@...gle.com>,
        Joerg Roedel <joro@...tes.org>,
        "linux-hyperv@...r.kernel.org" <linux-hyperv@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        kvm list <kvm@...r.kernel.org>,
        "Platform Driver" <platform-driver-x86@...r.kernel.org>,
        xen-devel <xen-devel@...ts.xenproject.org>,
        "open list:IOMMU DRIVERS" <iommu@...ts.linux-foundation.org>
Subject: RE: [PATCH] [v2] x86: apic: avoid -Wshadow warning in header

From: Arnd Bergmann
> Sent: 29 October 2020 09:51
...
> I think ideally there would be no global variable, withall accesses
> encapsulated in function calls, possibly using static_call() optimizations
> if any of them are performance critical.

There isn't really a massive difference between global variables
and global access functions.

	David

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