linux-kernel - Re: [PATCH v2 0/2] KVM: x86: avoid simultaneous queueing of both IRQ and SMI

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Message-ID: <20160602141858.GB20275@potion>
Date:	Thu, 2 Jun 2016 16:18:58 +0200
From:	Radim Krčmář <rkrcmar@...hat.com>
To:	Paolo Bonzini <pbonzini@...hat.com>
Cc:	linux-kernel@...r.kernel.org, kvm@...r.kernel.org
Subject: Re: [PATCH v2 0/2] KVM: x86: avoid simultaneous queueing of both IRQ
 and SMI

2016-06-01 22:25+0200, Paolo Bonzini:
> This was reported as a vmentry failure while running Windows with SMM
> enabled.  It's not that rare if your processor lacks APICv---it happens
> about 20-30% of the time while installing Windows 10.
> 
> I now understand the interrupt injection code (especially
> complete_interrupts) better, and I also understand why the shortcut I took
> in SMI handling was a bad idea.  In the end the code is somewhat simpler
> with the patch applied than before.
> 
> The bug report is at https://github.com/tianocore/edk2/issues/91, but it
> also fixes other Windows failures that Laszlo had reported to me privately.

Applied, thanks.