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From: Takuya Yoshikawa <takuya.yoshikawa@gmail.com>
To: Avi Kivity <avi@redhat.com>
Cc: mtosatti@redhat.com, kvm@vger.kernel.org, yoshikawa.takuya@oss.ntt.co.jp
Subject: Re: [PATCH 0/4] KVM: x86 emulator: Split decoder into separate functions
Date: Tue, 24 Apr 2012 23:41:33 +0900	[thread overview]
Message-ID: <20120424234133.b6d5b6a96d7e9ff4ddb066dc@gmail.com> (raw)
In-Reply-To: <4F96B4AA.8030204@redhat.com>

On Tue, 24 Apr 2012 17:11:54 +0300
Avi Kivity <avi@redhat.com> wrote:

> On 04/23/2012 06:31 PM, Takuya Yoshikawa wrote:
> > Takuya Yoshikawa (4):
> >   KVM: x86 emulator: Introduce ctxt->op_prefix for 0x66 prefix
> >   KVM: x86 emulator: Make prefix decoding a separate function
> >   KVM: x86 emulator: Make opcode decoding a separate function
> >
> 
> I don't see the benefit for the first three patches.  They add more
> state, and don't encourage any reuse.  The current code is complicated,
> but just splitting it doesn't really fix that.

I thought up these when some people tried to use some opcode/prefix
bytes in wrong stages.

Although I personally like splitting a long function into named
sub-functions, it's just a matter of taste.

OK, then I will focus on modrm fetching.

Thanks,
	Takuya

      reply	other threads:[~2012-04-24 14:41 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-04-23 15:31 [PATCH 0/4] KVM: x86 emulator: Split decoder into separate functions Takuya Yoshikawa
2012-04-23 15:33 ` [PATCH 1/4] KVM: x86 emulator: Introduce ctxt->op_prefix for 0x66 prefix Takuya Yoshikawa
2012-04-23 15:34 ` [PATCH 2/4] KVM: x86 emulator: Make prefix decoding a separate function Takuya Yoshikawa
2012-04-23 15:35 ` [PATCH 3/4] KVM: x86 emulator: Make opcode " Takuya Yoshikawa
2012-04-23 15:37 ` [PATCH 4/4] KVM: x86 emulator: Avoid pushing back ModRM byte in decode_opcode() Takuya Yoshikawa
2012-04-24 14:10   ` Avi Kivity
2012-04-24 14:27     ` Takuya Yoshikawa
2012-04-24 14:11 ` [PATCH 0/4] KVM: x86 emulator: Split decoder into separate functions Avi Kivity
2012-04-24 14:41   ` Takuya Yoshikawa [this message]

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