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Wed, 14 Oct 2026 16:21:57 +0000 X-MC-Unique: tlFTr15zMHW2ZM0c4FD04w-1 X-Mimecast-MFC-AGG-ID: tlFTr15zMHW2ZM0c4FD04w_1791994913 Received: from mx-prod-int-06.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-06.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.93]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-08.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 662721800847; Wed, 14 Oct 2026 16:21:52 +0000 (UTC) Received: from [100.90.56.12] (headnet04.pony-001.prod.iad2.dc.redhat.com [10.2.32.116]) by mx-prod-int-06.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id 0AA7F1800480; Wed, 14 Oct 2026 16:21:43 +0000 (UTC) Message-ID: Date: Wed, 14 Oct 2026 18:21:41 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v10 02/24] KVM: Move architecture capability Kconfigs to header defines To: Steffen Eiden Cc: kvm@vger.kernel.org, kvmarm@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-s390@vger.kernel.org, Alexander Gordeev , Andreas Grapentin , Arnd Bergmann , Catalin Marinas , Christian Borntraeger , Claudio Imbrenda , David Hildenbrand , Friedrich Welter , Fuad Tabba , Gautam Gala , Hariharan Mari , Heiko Carstens , Hendrik Brueckner , Ilya Leoshkevich , Janosch Frank , Joey Gouly , Marc Zyngier , Nico Boehr , Nina Schoetterl-Glausch , Oliver Upton , Sean Christopherson , Suzuki K Poulose , Sven Schnelle , Ulrich Weigand , Vasily Gorbik , Will Deacon , Zenghui Yu References: <20260930173441.66762-3-seiden@linux.ibm.com> <20261013121343.1997112-1-seiden@linux.ibm.com> <20261013122020.715112-B-seiden@linux.ibm.com> From: Paolo Bonzini Autocrypt: addr=pbonzini@redhat.com; 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charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20261014_092213_216927_CDBEB75B X-CRM114-Status: GOOD ( 11.59 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 10/13/26 14:20, Steffen Eiden wrote: > On Tue, Oct 13, 2026 at 02:13:43PM +0200, Steffen Eiden wrote: >> With s390 hosting multiple independent KVM implementations within the >> same kernel build (native s390 KVM and arm64 on s390), global Kconfig >> selections force both implementations to inherit options that only apply >> to one of them. >> >> Replace global Kconfig options which only apply to one KVM >> implementation with architecture-specific opt-in defines in the >> respective . Only remove Kconfig symbols that would be >> different on both s390 KVM implementations >> >> - __KVM_HAVE_INVALID_WAKEUPS (formerly HAVE_KVM_INVALID_WAKEUPS) >> - __KVM_HAVE_MSI (formerly HAVE_KVM_MSI) >> - __KVM_HAVE_NO_POLL (formerly HAVE_KVM_NO_POLL) >> - __KVM_HAVE_READONLY_MEM (formerly HAVE_KVM_READONLY_MEM) >> - __KVM_HAVE_VCPU_RUN_PID_CHANGE (formerly HAVE_KVM_VCPU_RUN_PID_CHANGE) >> >> This allows each architecture and guest implementation to configure its >> supported capabilities independently in its kvm_host header and eliminates >> adding unnecessary fallback stubs across different KVM targets. >> >> Acked-by: Hendrik Brueckner >> Signed-off-by: Steffen Eiden >> --- >> >> Sending this patch alone. All others are OK or already picked. >> >> Changes for v10: >> - Use __KVM_HAVE_ as prefix >> - Clarify that this patch touches only selected Kconfig options and >> not all. > > Paolo, > > Sorry, I somehow managed to not CC you, doing that now. Applied to kvm/next, thanks. Paolo > FWIW: > Original patch v10: > https://lore.kernel.org/all/20261013121343.1997112-1-seiden@linux.ibm.com/ > > Steffen