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 05/21] KVM: selftests: Add IRQ injection test
Date: Thu, 4 Jun 2026 09:26:55 -0700 [thread overview]
Message-ID: <aiGnT8oofyOiQrEn@google.com> (raw)
In-Reply-To: <aiGlib6tvRkyNCIA@google.com>
On Thu, Jun 04, 2026, Sean Christopherson wrote:
> On Thu, Jun 04, 2026, Josh Hilke wrote:
> > + eventfd_write(eventfd, 1);
> > +
> > + clock_gettime(CLOCK_MONOTONIC, &start);
> > + for (;;) {
> > + if (GUEST_RECEIVED_IRQ(vcpu))
> > + break;
>
> This is a kludgy and confusing way of writing:
>
> clock_gettime(CLOCK_MONOTONIC, &start);
> while (GUEST_RECEIVED_INTERRUPT(vcpu, do_use_nmi) &&
Heh, "minor" detail:
clock_gettime(CLOCK_MONOTONIC, &start);
while (!GUEST_RECEIVED_INTERRUPT(vcpu, do_use_nmi) &&
timespec_to_ns(timespec_elapsed(start)) <= timeout_ns)
cpu_relax();
next prev parent reply other threads:[~2026-06-04 16:26 UTC|newest]
Thread overview: 54+ 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 2:12 ` sashiko-bot
2026-06-04 16:12 ` Sean Christopherson
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 [this message]
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 2:09 ` sashiko-bot
2026-06-04 20:01 ` Sean Christopherson
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 2:09 ` sashiko-bot
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 2:09 ` sashiko-bot
2026-06-04 17:17 ` Sean Christopherson
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 2:13 ` sashiko-bot
2026-06-04 2:01 ` [PATCH v5 11/21] KVM: selftests: Verify IRQs wake up halted vCPUs " Josh Hilke
2026-06-04 2:15 ` sashiko-bot
2026-06-04 16:11 ` Sean Christopherson
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
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 2:21 ` sashiko-bot
2026-06-04 17:28 ` Sean Christopherson
2026-06-04 2:01 ` [PATCH v5 20/21] KVM: selftests: Make number of vCPUs configurable in " Josh Hilke
2026-06-04 2:20 ` sashiko-bot
2026-06-04 17:29 ` Sean Christopherson
2026-06-04 17:41 ` Sean Christopherson
2026-06-04 2:01 ` [PATCH v5 21/21] KVM: selftests: Add xAPIC support " Josh Hilke
2026-06-04 2:22 ` sashiko-bot
2026-06-04 17:34 ` Sean Christopherson
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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