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AFNElJ+gcq8AuBAO3WIhEk4erWoG/4bmUB8nYzNeayP40oAgBEagOUOpbR5YcTeRPpKuIbgDrWJ/X4+7kD/i6fE=@vger.kernel.org X-Gm-Message-State: AOJu0YwA5Qxk2/jo3sJX62f5wXKYk0vZ1d+Sdf9Flnu5kIlk9s1ODX0t PlTs0zb5swtGpLkOd8WXCAQwhfUT9eh6jyIoWjAfBoi4in8oByebivpwUuuyy3+ROb+tH76EwgR aQBFt4g== X-Received: from plpj6.prod.google.com ([2002:a17:903:3d86:b0:2b2:4d17:25c]) (user=seanjc job=prod-delivery.src-stubby-dispatcher) by 2002:a17:903:2ac7:b0:2b9:4eaa:7153 with SMTP id d9443c01a7336-2b9a24b4fdbmr46434185ad.19.1777584836425; Thu, 30 Apr 2026 14:33:56 -0700 (PDT) Date: Thu, 30 Apr 2026 14:33:54 -0700 In-Reply-To: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20260428171541.1342335-1-seanjc@google.com> <20260428171541.1342335-4-seanjc@google.com> Message-ID: Subject: Re: [RFC PATCH 3/5] MAINTAINERS: Add an entry for KVM's guest_memfd From: Sean Christopherson To: Ackerley Tng Cc: Paolo Bonzini , David Hildenbrand , kvm@vger.kernel.org, linux-kernel@vger.kernel.org, Yosry Ahmed , Marc Zyngier , Oliver Upton , Tianrui Zhao , Bibo Mao , Huacai Chen , Anup Patel , Christian Borntraeger , Janosch Frank , Claudio Imbrenda Content-Type: text/plain; charset="us-ascii" On Thu, Apr 30, 2026, Ackerley Tng wrote: > Sean Christopherson writes: > > > To better reflect how guest_memfd has been maintained for the last few > > years, and to prepare for significant upcoming growth and expansion, add a > > dedicated MAINTAINERS entry for KVM's guest_memfd, with Paolo and myself > > (Sean) as co-maintainers. > > > > List both the KVM and KVM x86 git trees as authoritative repositories, as > > any given guest_memfd change has a equal odds of hitting KVM x86 or not. > > > > Signed-off-by: Sean Christopherson > > --- > > MAINTAINERS | 9 +++++++++ > > 1 file changed, 9 insertions(+) > > > > diff --git a/MAINTAINERS b/MAINTAINERS > > index 89b470db22de..9eceeb6f699d 100644 > > --- a/MAINTAINERS > > +++ b/MAINTAINERS > > @@ -14396,6 +14396,15 @@ S: Maintained > > F: Documentation/devicetree/bindings/leds/backlight/kinetic,ktz8866.yaml > > F: drivers/video/backlight/ktz8866.c > > > > +KVM GUEST_MEMFD > > +M: Sean Christopherson > > +M: Paolo Bonzini > > +L: kvm@vger.kernel.org > > +S: Supported > > +T: git git://git.kernel.org/pub/scm/virt/kvm/kvm.git > > +T: git https://github.com/kvm-x86/linux.git > > +F: virt/kvm/guest_memfd.* > > Should selftests for guest_memfd be added here too? Hmm, no? I don't think I want to go to that level of granularity for selftests, at least not at this time. Maybe if we end up with a large collection of guest_memfd specific, arch-agnostic tests, then we could extend the entry? But even then, I don't think I want to go that route. Much of the guest_memfd functionality and testing is in common files and/or arch-specific code, e.g. a lot of the truly core functionality is in lib/kvm_util.c, and set_memory_region_test.c and x86/private_mem_conversions_test.c have about as much guest_memfd testing as guest_memfd_test.c. I worry that adding a selftests clause to KVM GUEST_MEMFD would do more harm than good, e.g. create expectations that guest_memfd testing should be isolated and/or be reviewed differently or something, without actually making it easier to maintain the tests.