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

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Date:   Thu, 29 Oct 2020 08:04:31 +0100
From:   Paolo Bonzini <pbonzini@...hat.com>
To:     Arnd Bergmann <arnd@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        x86@...nel.org
Cc:     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-kernel@...r.kernel.org, kvm@...r.kernel.org,
        platform-driver-x86@...r.kernel.org,
        xen-devel@...ts.xenproject.org, iommu@...ts.linux-foundation.org
Subject: Re: [PATCH] [v2] x86: apic: avoid -Wshadow warning in header

On 28/10/20 22:20, Arnd Bergmann wrote:
> Avoid this by renaming the global 'apic' variable to the more descriptive
> 'x86_system_apic'. It was originally called 'genapic', but both that
> and the current 'apic' seem to be a little overly generic for a global
> variable.

The 'apic' affects only the current CPU, so one of 'x86_local_apic',
'x86_lapic' or 'x86_apic' is probably preferrable.

I don't have huge objections to renaming 'apic' variables and arguments
in KVM to 'lapic'.  I do agree with Sean however that it's going to
break again very soon.

Paolo