linux-kernel - Re: [PATCH v2 0/9] KVM: selftests: Binary stats fixes and infra updates

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Message-ID: <173958028389.1189761.4728178272323667525.b4-ty@google.com>
Date: Fri, 14 Feb 2025 16:50:35 -0800
From: Sean Christopherson <seanjc@...gle.com>
To: Sean Christopherson <seanjc@...gle.com>, Marc Zyngier <maz@...nel.org>, 
	Oliver Upton <oliver.upton@...ux.dev>, Anup Patel <anup@...infault.org>, 
	Paul Walmsley <paul.walmsley@...ive.com>, Palmer Dabbelt <palmer@...belt.com>, 
	Albert Ou <aou@...s.berkeley.edu>, Christian Borntraeger <borntraeger@...ux.ibm.com>, 
	Janosch Frank <frankja@...ux.ibm.com>, Claudio Imbrenda <imbrenda@...ux.ibm.com>, 
	Paolo Bonzini <pbonzini@...hat.com>
Cc: linux-arm-kernel@...ts.infradead.org, kvmarm@...ts.linux.dev, 
	kvm@...r.kernel.org, kvm-riscv@...ts.infradead.org, 
	linux-riscv@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 0/9] KVM: selftests: Binary stats fixes and infra updates

On Fri, 10 Jan 2025 16:50:40 -0800, Sean Christopherson wrote:
> Fix a handful of bugs in the binary stats infrastructure, expand support
> to vCPU-scoped stats, enumerate all KVM stats in selftests, and use the
> enumerated stats to assert at compile-time that {vm,vcpu}_get_stat() is
> getting a stat that actually exists.
> 
> Most of the bugs are benign, and AFAICT, none actually cause problems in
> the current code base.  The worst of the bugs is lack of validation that
> the requested stat actually exists, which is quite annoying if someone
> fat fingers a stat name, tries to get a vCPU stat on a VM FD, etc.
> 
> [...]

Applied to kvm-x86 selftests (attempt #2).  Like the previous attempt, I skipped
the compile-time assertions.

[1/9] KVM: selftests: Fix mostly theoretical leak of VM's binary stats FD
      https://github.com/kvm-x86/linux/commit/fd546aba1967
[2/9] KVM: selftests: Close VM's binary stats FD when releasing VM
      https://github.com/kvm-x86/linux/commit/f7f232a01f3d
[3/9] KVM: selftests: Assert that __vm_get_stat() actually finds a stat
      https://github.com/kvm-x86/linux/commit/eead13d493af
[4/9] KVM: selftests: Macrofy vm_get_stat() to auto-generate stat name string
      https://github.com/kvm-x86/linux/commit/b0c3f5df9291
[5/9] KVM: selftests: Add struct and helpers to wrap binary stats cache
      https://github.com/kvm-x86/linux/commit/e65faf71bd54
[6/9] KVM: selftests: Get VM's binary stats FD when opening VM
      https://github.com/kvm-x86/linux/commit/ea7179f99514
[7/9] KVM: selftests: Adjust number of files rlimit for all "standard" VMs
      https://github.com/kvm-x86/linux/commit/9b56532b8a59
[8/9] KVM: selftests: Add infrastructure for getting vCPU binary stats
      https://github.com/kvm-x86/linux/commit/16fc7cb406a5
[9/9] KVM: selftests: Add compile-time assertions to guard against stats typos
      (no commit info)

--
https://github.com/kvm-x86/linux/tree/next