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Date:   Mon, 18 Sep 2023 08:56:09 +0200
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Subject: Re: [PATCH 18/26] KVM: s390: Stop adding virt/kvm to the arch include
 path
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To:     Sean Christopherson <seanjc@google.com>,
        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>
Cc:     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>
References: <20230916003118.2540661-1-seanjc@google.com>
 <20230916003118.2540661-19-seanjc@google.com>
From:   Thomas Huth <thuth@redhat.com>
In-Reply-To: <20230916003118.2540661-19-seanjc@google.com>
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On 16/09/2023 02.31, Sean Christopherson wrote:
> Don't add virt/kvm to KVM s390's include path, the headers in virt/kvm are
> intended to be used only by other code in virt/kvm, i.e. are "private" to
> the core KVM code.  It's not clear that s390 *ever* included a header from
> virt/kvm, i.e. odds are good the "-Ivirt/kvm" was copied from a x86's
> Makefile when s390 support was first added.
> 
> The only headers in virt/kvm at the time were the x86 specific ioapic.h,
> and iodev.h, neither of which shows up as an #include in the diff for the
> commit range 37817f2982d0f..e976a2b997fc4.
> 
> Signed-off-by: Sean Christopherson <seanjc@google.com>
> ---
>   arch/s390/kvm/Makefile | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/arch/s390/kvm/Makefile b/arch/s390/kvm/Makefile
> index 02217fb4ae10..f17249ab2a72 100644
> --- a/arch/s390/kvm/Makefile
> +++ b/arch/s390/kvm/Makefile
> @@ -5,7 +5,7 @@
>   
>   include $(srctree)/virt/kvm/Makefile.kvm
>   
> -ccflags-y := -Ivirt/kvm -Iarch/s390/kvm
> +ccflags-y := -Iarch/s390/kvm
>   
>   kvm-y += kvm-s390.o intercept.o interrupt.o priv.o sigp.o
>   kvm-y += diag.o gaccess.o guestdbg.o vsie.o pv.o

Reviewed-by: Thomas Huth <thuth@redhat.com>