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From: Jan Kiszka <jan.kiszka@web.de>
To: Paolo Bonzini <pbonzini@redhat.com>, kvm <kvm@vger.kernel.org>
Cc: Joerg Roedel <joro@8bytes.org>,
	Valentine Sinitsyn <valentine.sinitsyn@gmail.com>
Subject: Re: [PATCH] KVM: nSVM: Fix IOIO bitmap evaluation
Date: Mon, 30 Jun 2014 17:15:02 +0200	[thread overview]
Message-ID: <53B17EF6.2080403@web.de> (raw)
In-Reply-To: <53B17D5D.8030206@redhat.com>

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On 2014-06-30 17:08, Paolo Bonzini wrote:
> Il 30/06/2014 10:54, Jan Kiszka ha scritto:
>> +        SVM_IOIO_SIZE_SHIFT;
>>      gpa  = svm->nested.vmcb_iopm + (port / 8);
>> -    bit  = port % 8;
>> -    val  = 0;
>> +    start_bit = port % 8;
>> +    iopm_len = (start_bit + size > 8) ? 2 : 1;
>> +    mask = (0xf >> (4 - size)) << start_bit;
> 
> These two lines are tricky. :)

That last line was, indeed... :)

> 
> The patch looks good, I'll write a test case if you don't beat me to it.

I'm not going to beat you if you write any test case. :)

Didn't check the svm part of the unit tests recently, if they are as
easily extensible for such scenarios like vmx is now.

Jan



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  reply	other threads:[~2014-06-30 15:15 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-06-30  8:54 [PATCH] KVM: nSVM: Fix IOIO bitmap evaluation Jan Kiszka
2014-06-30 15:08 ` Paolo Bonzini
2014-06-30 15:15   ` Jan Kiszka [this message]
2014-07-01 15:23 ` Joerg Roedel
2014-07-01 15:25   ` Jan Kiszka

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