linux-kernel - Re: [PATCH] KVM: Add the missing stub function for kvm_dirty_ring_check

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Date:   Thu, 16 Mar 2023 10:02:22 -0700
From:   Sean Christopherson <seanjc@...gle.com>
To:     Shameer Kolothum <shameerali.kolothum.thodi@...wei.com>
Cc:     linux-kernel@...r.kernel.org, kvm@...r.kernel.org,
        gshan@...hat.com, maz@...nel.org
Subject: Re: [PATCH] KVM: Add the missing stub function for kvm_dirty_ring_check_request()

On Thu, Mar 16, 2023, Shameer Kolothum wrote:
> The stub for !CONFIG_HAVE_KVM_DIRTY_RING case is missing.

No stub is needed.  kvm_dirty_ring_check_request() isn't called from common code,
and should not (and isn't unless I'm missing something) be called from arch code
unless CONFIG_HAVE_KVM_DIRTY_RING=y.

x86 and arm64 are the only users, and they both select HAVE_KVM_DIRTY_RING
unconditionally when KVM is enabled.