From: Jason Wang <jasowang@redhat.com>
To: "H. Peter Anvin" <hpa@zytor.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>,
tglx@linutronix.de, mingo@redhat.com, x86@kernel.org,
gleb@redhat.com, kvm@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH 1/4] x86: introduce hypervisor_cpuid_base()
Date: Wed, 24 Jul 2013 12:44:30 +0800 [thread overview]
Message-ID: <51EF5BAE.1020905@redhat.com> (raw)
In-Reply-To: <51EEA96D.3070208@zytor.com>
On 07/24/2013 12:03 AM, H. Peter Anvin wrote:
> On 07/23/2013 04:16 AM, Paolo Bonzini wrote:
>> That's nicer, though strcmp is what the replaced code used to do in
>> patches 2 and 3.
>>
>> Note that memcmp requires the caller to use "KVMKVMKVM\0\0" as the
>> signature (or alternatively hypervisor_cpuid_base can copy the argument
>> into another 12-byte local variable).
>>
> Which is the actual signature, though...
>
> -hpa
>
>
Since it's just a minor optimization. How about just keep using the
strcmp()?
next prev parent reply other threads:[~2013-07-24 4:45 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-07-23 9:41 [PATCH 1/4] x86: introduce hypervisor_cpuid_base() Jason Wang
2013-07-23 9:41 ` [PATCH 2/4] xen: switch to use hypervisor_cpuid_base() Jason Wang
2013-07-23 11:16 ` Paolo Bonzini
2013-07-23 15:55 ` Konrad Rzeszutek Wilk
2013-07-23 9:41 ` [PATCH 3/4] kvm: " Jason Wang
2013-07-23 11:16 ` Paolo Bonzini
2013-07-23 9:41 ` [PATCH 4/4] x86: properly handle kvm emulation of hyperv Jason Wang
2013-07-23 11:17 ` Paolo Bonzini
2013-07-23 13:55 ` KY Srinivasan
2013-07-23 14:48 ` H. Peter Anvin
2013-07-23 17:45 ` KY Srinivasan
2013-07-23 18:45 ` H. Peter Anvin
2013-07-23 22:42 ` KY Srinivasan
2013-07-24 4:37 ` Jason Wang
2013-07-24 4:48 ` H. Peter Anvin
2013-07-24 6:54 ` Jason Wang
2013-07-24 7:06 ` Paolo Bonzini
2013-07-24 14:01 ` KY Srinivasan
2013-07-24 15:14 ` H. Peter Anvin
2013-07-24 19:05 ` KY Srinivasan
2013-07-24 21:37 ` H. Peter Anvin
2013-07-25 7:59 ` Paolo Bonzini
2013-07-25 8:12 ` Jason Wang
2013-07-23 10:04 ` [PATCH 1/4] x86: introduce hypervisor_cpuid_base() H. Peter Anvin
2013-07-23 11:16 ` Paolo Bonzini
2013-07-23 16:03 ` H. Peter Anvin
2013-07-24 4:44 ` Jason Wang [this message]
2013-07-24 4:47 ` H. Peter Anvin
2013-07-23 13:48 ` Gleb Natapov
2013-07-24 4:34 ` Jason Wang
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