Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.32 as permitted sender) client-ip=23.128.96.32;
Date:   Mon, 18 Sep 2023 12:16:37 -0300
From:   Jason Gunthorpe <jgg@ziepe.ca>
To:     Sean Christopherson <seanjc@google.com>
Cc:     Catalin Marinas <catalin.marinas@arm.com>,
        Will Deacon <will@kernel.org>, Marc Zyngier <maz@kernel.org>,
        Oliver Upton <oliver.upton@linux.dev>,
        Huacai Chen <chenhuacai@kernel.org>,
        Michael Ellerman <mpe@ellerman.id.au>,
        Anup Patel <anup@brainfault.org>,
        Paul Walmsley <paul.walmsley@sifive.com>,
        Palmer Dabbelt <palmer@dabbelt.com>,
        Albert Ou <aou@eecs.berkeley.edu>,
        Heiko Carstens <hca@linux.ibm.com>,
        Vasily Gorbik <gor@linux.ibm.com>,
        Alexander Gordeev <agordeev@linux.ibm.com>,
        Christian Borntraeger <borntraeger@linux.ibm.com>,
        Janosch Frank <frankja@linux.ibm.com>,
        Claudio Imbrenda <imbrenda@linux.ibm.com>,
        Thomas Gleixner <tglx@linutronix.de>,
        Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
        Dave Hansen <dave.hansen@linux.intel.com>, x86@kernel.org,
        Peter Zijlstra <peterz@infradead.org>,
        Arnaldo Carvalho de Melo <acme@kernel.org>,
        Paolo Bonzini <pbonzini@redhat.com>,
        Tony Krowiak <akrowiak@linux.ibm.com>,
        Halil Pasic <pasic@linux.ibm.com>,
        Jason Herne <jjherne@linux.ibm.com>,
        Harald Freudenberger <freude@linux.ibm.com>,
        Alex Williamson <alex.williamson@redhat.com>,
        Andy Lutomirski <luto@kernel.org>,
        linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev,
        linux-mips@vger.kernel.org, kvm@vger.kernel.org,
        linuxppc-dev@lists.ozlabs.org, kvm-riscv@lists.infradead.org,
        linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org,
        linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org,
        Anish Ghulati <aghulati@google.com>,
        Venkatesh Srinivas <venkateshs@chromium.org>,
        Andrew Thornton <andrewth@google.com>
Subject: Re: [PATCH 01/26] vfio: Wrap KVM helpers with CONFIG_KVM instead of
 CONFIG_HAVE_KVM
Message-ID: <20230918151637.GF13795@ziepe.ca>
References: <20230916003118.2540661-1-seanjc@google.com>
 <20230916003118.2540661-2-seanjc@google.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <20230916003118.2540661-2-seanjc@google.com>
Precedence: bulk

On Fri, Sep 15, 2023 at 05:30:53PM -0700, Sean Christopherson wrote:
> Wrap the helpers for getting references to KVM instances with a check on
> CONFIG_KVM being enabled, not on CONFIG_HAVE_KVM being defined.  PPC does
> NOT select HAVE_KVM, despite obviously supporting KVM, and guarding code
> to get references to KVM based on whether or not the architecture supports
> KVM is nonsensical.
> 
> Drop the guard around linux/kvm_host.h entirely, conditionally including a
> generic headers is completely unnecessary.
> 
> Signed-off-by: Sean Christopherson <seanjc@google.com>
> ---
>  drivers/vfio/vfio.h      | 2 +-
>  drivers/vfio/vfio_main.c | 4 +---
>  2 files changed, 2 insertions(+), 4 deletions(-)

Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>

Jason