From: Roman Kagan <rkagan@virtuozzo.com>
To: Paolo Bonzini <pbonzini@redhat.com>
Cc: "Radim Krčmář" <rkrcmar@redhat.com>,
kvm@vger.kernel.org, "Denis Lunev" <den@virtuozzo.com>
Subject: Re: [PATCH] kvm/x86: skip async_pf when in guest mode
Date: Fri, 25 Nov 2016 14:17:33 +0300 [thread overview]
Message-ID: <20161125111732.GD28457@rkaganb.sw.ru> (raw)
In-Reply-To: <1431709160.121394.1480063884372.JavaMail.zimbra@redhat.com>
On Fri, Nov 25, 2016 at 03:51:24AM -0500, Paolo Bonzini wrote:
>
> > What's the correct way to kick L2 to L1 from the host? I failed to find
> > one from a brief skimming through the code. We need a sensible exit
> > reason delivered to L1 (probably "external interrupt" will do) but I
> > don't see a method to do so without actually injecting an interrupt into
> > L1 which is not unlikely to confuse it. Any suggestion?
>
> Perhaps check for async page faults in nested_vmx_check_exception and
> nested_svm_intercept, before testing the exception bitmap?
Yeah I also thought about this, but hoped there's an arch-agnostic
way... Will try this approach, then.
Thanks,
Roman.
prev parent reply other threads:[~2016-11-25 11:48 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-11-24 16:30 [PATCH] kvm/x86: skip async_pf when in guest mode Roman Kagan
2016-11-24 20:49 ` Radim Krčmář
2016-11-25 7:15 ` Roman Kagan
2016-11-25 8:42 ` Roman Kagan
2016-11-25 8:51 ` Paolo Bonzini
2016-11-25 11:17 ` Roman Kagan [this message]
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