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Message-ID: <555DF2E6.1020003@redhat.com>
Date: Thu, 21 May 2015 16:59:50 +0200
From: Paolo Bonzini <pbonzini@...hat.com>
To: Radim Krčmář <rkrcmar@...hat.com>
CC: linux-kernel@...r.kernel.org, kvm@...r.kernel.org, bsd@...hat.com
Subject: Re: [PATCH 06/12] KVM: x86: API changes for SMM support
On 21/05/2015 16:49, Radim Krčmář wrote:
> 2015-05-08 13:20+0200, Paolo Bonzini:
>> diff --git a/include/uapi/linux/kvm.h b/include/uapi/linux/kvm.h
>> @@ -202,7 +202,7 @@ struct kvm_run {
>> __u32 exit_reason;
>> __u8 ready_for_interrupt_injection;
>> __u8 if_flag;
>> - __u8 padding2[2];
>> + __u16 flags;
>
> (It got lost last review and I'd really like to know ...
> what is the advantage of giving both bytes to flags?)
No advantage. You just should leave padding2[1] in the middle so that
the offset of &run->padding2[0] doesn't change. Since it's not obvious
I gave two bytes to flags, but I can do it either way.
Paolo
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