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 on core2 CPUs (with fix!)
Date: Sun, 27 Jun 2021 00:50:35 +0300 [thread overview]
Message-ID: <a18ea3f1-2d7a-fee4-aa20-bb26c44baf19@yandex.ru> (raw)
In-Reply-To: <CALMp9eQWKa1vL+jj5HXO1bm+oMo6gQLNw44P7y6ZaF8_WQfukw@mail.gmail.com>
26.06.2021 03:15, Jim Mattson пишет:
> If the squashed exception was a trap, it's now lost.
OK, below are 2 more patches, each of
them alone is fixing the problem.
---
--- x86.c.old 2021-03-20 12:51:14.000000000 +0300
+++ x86.c 2021-06-27 00:38:45.547355116 +0300
@@ -9094,6 +9094,7 @@
if (req_immediate_exit)
kvm_make_request(KVM_REQ_EVENT, vcpu);
kvm_x86_ops.cancel_injection(vcpu);
+ kvm_clear_exception_queue(vcpu);
if (unlikely(vcpu->arch.apic_attention))
kvm_lapic_sync_from_vapic(vcpu);
out:
---
Or:
---
--- x86.c.old 2021-03-20 12:51:14.000000000 +0300
+++ x86.c 2021-06-27 00:47:06.958618185 +0300
@@ -1783,8 +1783,7 @@
bool kvm_vcpu_exit_request(struct kvm_vcpu *vcpu)
{
xfer_to_guest_mode_prepare();
- return vcpu->mode == EXITING_GUEST_MODE ||
kvm_request_pending(vcpu) ||
- xfer_to_guest_mode_work_pending();
+ return vcpu->mode == EXITING_GUEST_MODE ||
kvm_request_pending(vcpu);
}
EXPORT_SYMBOL_GPL(kvm_vcpu_exit_request);
---
Still not a clue?
next prev parent reply other threads:[~2021-06-26 21:50 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
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 [this message]
2021-06-27 12:13 ` stsp
2021-06-26 14:03 ` exception vs SIGALRM race (another patch) stsp
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=a18ea3f1-2d7a-fee4-aa20-bb26c44baf19@yandex.ru \
--to=stsp2@yandex.ru \
--cc=jmattson@google.com \
--cc=kvm@vger.kernel.org \
--cc=seanjc@google.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.