From: stsp <stsp2@yandex.ru>
To: Jim Mattson <jmattson@google.com>
Cc: Sean Christopherson <seanjc@google.com>, kvm@vger.kernel.org
Subject: Re: exception vs SIGALRM race (was: Re: guest/host mem out of sync on core2duo?)
Date: Tue, 29 Jun 2021 01:00:33 +0300 [thread overview]
Message-ID: <b15c78e6-4ae3-5825-50c2-396c4e600d02@yandex.ru> (raw)
In-Reply-To: <CALMp9eSnUhE61VcS5tDfmJwKFO9_en5iQhFeakiJ54gnH3QRvg@mail.gmail.com>
29.06.2021 00:47, Jim Mattson пишет:
> On Mon, Jun 21, 2021 at 5:27 PM stsp <stsp2@yandex.ru> wrote:
>> 22.06.2021 01:33, Jim Mattson пишет:
>>> Maybe what you want is run->ready_for_interrupt_injection? And, if
>>> that's not set, try KVM_RUN with run->request_interrupt_window set?
>> static int kvm_vcpu_ready_for_interrupt_injection(struct kvm_vcpu *vcpu)
>> {
>> return kvm_arch_interrupt_allowed(vcpu) &&
>> !kvm_cpu_has_interrupt(vcpu) &&
>> !kvm_event_needs_reinjection(vcpu) &&
>> kvm_cpu_accept_dm_intr(vcpu);
>>
>> }
>>
>>
>> So judging from this snippet,
>> I wouldn't bet on the right indication
>> from run->ready_for_interrupt_injection
> In your case, vcpu->arch.exception.injected is true, so
> kvm_event_needs_reinjection() returns true. Hence,
> kvm_vcpu_ready_for_interrupt_injection() returns false.
>
> Are you seeing that run->ready_for_interrupt_injection is true, or are
> you just speculating?
OK, please see this commit:
https://www.lkml.org/lkml/2020/12/1/324
There is simply no such code
any longer. I don't know where
I got the above snippet, but its
not valid. The code is currently:
---
static int kvm_vcpu_ready_for_interrupt_injection(struct kvm_vcpu *vcpu)
{
return kvm_arch_interrupt_allowed(vcpu) &&
kvm_cpu_accept_dm_intr(vcpu);
}
next prev parent reply other threads:[~2021-06-28 22:00 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-12 22:49 guest/host mem out of sync on core2duo? stsp
2021-06-13 12:36 ` stsp
2021-06-14 17:06 ` Sean Christopherson
2021-06-14 17:32 ` stsp
2021-06-17 14:42 ` Sean Christopherson
2021-06-18 15:59 ` stsp
2021-06-18 21:07 ` Jim Mattson
2021-06-18 21:55 ` stsp
2021-06-18 22:06 ` Jim Mattson
2021-06-18 22:26 ` stsp
2021-06-18 22:32 ` Sean Christopherson
2021-06-19 0:11 ` stsp
2021-06-19 0:54 ` Sean Christopherson
2021-06-19 9:18 ` stsp
2021-06-21 2:34 ` exception vs SIGALRM race (was: Re: guest/host mem out of sync on core2duo?) stsp
2021-06-21 22:33 ` Jim Mattson
2021-06-21 23:32 ` stsp
2021-06-22 0:27 ` stsp
2021-06-28 21:47 ` Jim Mattson
2021-06-28 21:50 ` stsp
2021-06-28 22:00 ` stsp [this message]
2021-06-28 22:27 ` Jim Mattson
2021-07-06 16:28 ` Paolo Bonzini
2021-07-06 22:22 ` stsp
2021-07-06 23:41 ` Paolo Bonzini
2021-06-23 23:38 ` exception vs SIGALRM race (with test-case now!) stsp
2021-06-24 0:11 ` stsp
2021-06-24 0:25 ` stsp
2021-06-24 18:05 ` exception vs SIGALRM race on core2 CPUs (with qemu-based test-case this time!) stsp
2021-06-24 18:07 ` stsp
2021-06-25 23:35 ` exception vs SIGALRM race on core2 CPUs (with fix!) stsp
2021-06-26 0:15 ` Jim Mattson
2021-06-26 0:35 ` stsp
2021-06-26 21:50 ` stsp
2021-06-27 12:13 ` stsp
2021-06-26 14:03 ` exception vs SIGALRM race (another patch) stsp
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