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From: Sean Christopherson <seanjc@google.com>
To: Josh Hilke <jrhilke@google.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>,
	kvm@vger.kernel.org, linux-kernel@vger.kernel.org,
	 David Matlack <dmatlack@google.com>,
	Alex Williamson <alex.williamson@redhat.com>
Subject: Re: [PATCH v5 12/21] KVM: selftests: Verify interrupts are received after modifying IRQ routes in IRQ test
Date: Thu, 4 Jun 2026 10:22:09 -0700	[thread overview]
Message-ID: <aiG0QbCdJNi0arD1@google.com> (raw)
In-Reply-To: <20260604020143.748245-13-jrhilke@google.com>

This is _very_ misleading.  The test _already_ verifies routing changes.  This
is specifically setting empty routing, to validate that KVM doesn't barf on a
complete teardown of routing.

On Thu, Jun 04, 2026, Josh Hilke wrote:
> From: David Matlack <dmatlack@google.com>
> 
> Add the '-c' flag to tools/testing/selftests/kvm/irq_test.c to destroy

I feel quite strong that this need to be -e for "empty", not -c for "clear".
Because there are many different ways the test could "clear" routing, e.g. it
could nullify just the target IRQ's entry, set the entry to a suppress the IRQ,
etc.

> and recreate KVM's GSI routing table between interrupts. This ensures
> that KVM correctly handles dynamic updates to the interrupt routing
> table while interrupts are actively being signaled by assigned devices.
> 
> Co-developed-by: Josh Hilke <jrhilke@google.com>
> Signed-off-by: Josh Hilke <jrhilke@google.com>
> Signed-off-by: David Matlack <dmatlack@google.com>

SoB order is wrong (here and in several other patches).  It needs to be:

    Signed-off-by: David Matlack <dmatlack@google.com>
    Co-developed-by: Josh Hilke <jrhilke@google.com>
    Signed-off-by: Josh Hilke <jrhilke@google.com>

Please read Documentation/process/5.Posting.rst and
Documentation/process/submitting-patches.rst.

  reply	other threads:[~2026-06-04 17:22 UTC|newest]

Thread overview: 37+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-06-04  2:01 [PATCH v5 00/21] KVM: selftests: Link with VFIO selftests lib and test device interrupts Josh Hilke
2026-06-04  2:01 ` [PATCH v5 01/21] KVM: selftests: Build and link selftests/vfio/lib into KVM selftests Josh Hilke
2026-06-04  2:01 ` [PATCH v5 02/21] KVM: selftests: Add guest read/write macros Josh Hilke
2026-06-04  2:01 ` [PATCH v5 03/21] KVM: selftests: Rename guest_rng to kvm_rng Josh Hilke
2026-06-04  2:01 ` [PATCH v5 04/21] KVM: selftests: Add helper to generate random u64 in range [min,max] Josh Hilke
2026-06-04  2:01 ` [PATCH v5 05/21] KVM: selftests: Add IRQ injection test Josh Hilke
2026-06-04 16:19   ` Sean Christopherson
2026-06-04 16:26     ` Sean Christopherson
2026-06-04  2:01 ` [PATCH v5 06/21] KVM: selftests: Add helper to get host IRQ from device MSIX for IRQ bypass test Josh Hilke
2026-06-04  2:01 ` [PATCH v5 07/21] KVM: selftests: Verify IRQ bypass works in IRQ test Josh Hilke
2026-06-04 16:22   ` Sean Christopherson
2026-06-04 17:56   ` Sean Christopherson
2026-06-04 19:25     ` Sean Christopherson
2026-06-04 19:52       ` Sean Christopherson
2026-06-04 23:14       ` Sean Christopherson
2026-06-04 23:35         ` David Matlack
2026-06-04  2:01 ` [PATCH v5 08/21] KVM: selftests: Add helpers to write proc IRQ affinity for " Josh Hilke
2026-06-04 19:35   ` Sean Christopherson
2026-06-04  2:01 ` [PATCH v5 09/21] KVM: selftests: Add helpers to print " Josh Hilke
2026-06-04  2:01 ` [PATCH v5 10/21] KVM: selftests: Verify interrupts are received when IRQ affinity changes in " Josh Hilke
2026-06-04  2:01 ` [PATCH v5 11/21] KVM: selftests: Verify IRQs wake up halted vCPUs " Josh Hilke
2026-06-04  2:01 ` [PATCH v5 12/21] KVM: selftests: Verify interrupts are received after modifying IRQ routes " Josh Hilke
2026-06-04 17:22   ` Sean Christopherson [this message]
2026-06-04  2:01 ` [PATCH v5 13/21] KVM: selftests: Make number of IRQs configurable " Josh Hilke
2026-06-04 17:35   ` Sean Christopherson
2026-06-04  2:01 ` [PATCH v5 14/21] KVM: selftests: Verify non-postable IRQ remapping " Josh Hilke
2026-06-04 17:22   ` Sean Christopherson
2026-06-04  2:01 ` [PATCH v5 15/21] KVM: selftests: Add kvm_gettid() wrapper and convert users Josh Hilke
2026-06-04  2:01 ` [PATCH v5 16/21] KVM: selftests: Add kvm_sched_getaffinity() " Josh Hilke
2026-06-04 17:23   ` Sean Christopherson
2026-06-04  2:01 ` [PATCH v5 17/21] KVM: selftests: Add pin_task_to_random_cpu() helper function for IRQ test Josh Hilke
2026-06-04  2:01 ` [PATCH v5 18/21] KVM: selftests: Verify vCPU migration during IRQ delivery in " Josh Hilke
2026-06-04 17:27   ` Sean Christopherson
2026-06-04  2:01 ` [PATCH v5 19/21] KVM: selftests: Print vCPU affinity on timeout during " Josh Hilke
2026-06-04  2:01 ` [PATCH v5 20/21] KVM: selftests: Make number of vCPUs configurable in " Josh Hilke
2026-06-04  2:01 ` [PATCH v5 21/21] KVM: selftests: Add xAPIC support " Josh Hilke
2026-06-04 20:22 ` [PATCH v5 00/21] KVM: selftests: Link with VFIO selftests lib and test device interrupts Sean Christopherson

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