linux-kernel - Re: [PATCH 06/21] KVM: x86/mmu: Get rid of is_cpuid

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Message-ID: <ZBirHz+aQJHxvuV9@google.com>
Date:   Mon, 20 Mar 2023 11:51:11 -0700
From:   Sean Christopherson <seanjc@...gle.com>
To:     Ben Gardon <bgardon@...gle.com>
Cc:     linux-kernel@...r.kernel.org, kvm@...r.kernel.org,
        Paolo Bonzini <pbonzini@...hat.com>,
        Peter Xu <peterx@...hat.com>,
        David Matlack <dmatlack@...gle.com>,
        Vipin Sharma <vipinsh@...gle.com>,
        Ricardo Koller <ricarkol@...gle.com>
Subject: Re: [PATCH 06/21] KVM: x86/mmu: Get rid of is_cpuid_PSE36()

On Thu, Feb 02, 2023, Ben Gardon wrote:
> is_cpuid_PSE36() always returns 1 and is never overridden, so just get
> rid of the function. This saves having to export it in a future commit
> in order to move the include of paging_tmpl.h out of mmu.c.

Probably won't matter as I suspect this series is going to end up a burner way
in the back, but FWIW I'd prefer to preserve is_cpuid_PSE36() in some capacity.
I 100% agree the helper is silly, but the mere existice of the flag is so esoteric
these days that I like having obvious/obnoxious code to call it out.