From: Paolo Bonzini <pbonzini@redhat.com>
To: "Michael R. Hines" <mrhines@linux.vnet.ibm.com>,
Laszlo Ersek <lersek@redhat.com>, Amos Kong <akong@redhat.com>,
qemu-trivial@nongnu.org
Cc: yamahata@private.email.ne.jp, mjt@tls.msk.ru,
qemu-devel@nongnu.org, "Michael R. Hines" <mrhines@us.ibm.com>
Subject: Re: [Qemu-trivial] [PATCH] arch_init.c: remove duplicate function
Date: Sun, 27 Apr 2014 10:48:09 +0200 [thread overview]
Message-ID: <535CC449.5030507@redhat.com> (raw)
In-Reply-To: <534C7584.2090301@linux.vnet.ibm.com>
Il 15/04/2014 01:55, Michael R. Hines ha scritto:
> Paolo? I see that some of the block-migration code and the qemu-img code
> is also
> calling buffer_is_zero() - are you guys depending on the performance of any
> buffer_is_zero() calls to use the vector-optimized version like
> migration does?
Yes, definitely. Not to the point that we care about which functions
are inlined, but the constant-factor improvement that comes for
vectorization can have a noticeable impact.
Paolo
prev parent reply other threads:[~2014-04-27 8:48 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-04-14 2:27 [Qemu-trivial] [PATCH] arch_init.c: remove duplicate function Amos Kong
2014-04-14 9:19 ` Laszlo Ersek
2014-04-14 23:55 ` Michael R. Hines
2014-04-15 9:00 ` Laszlo Ersek
2014-04-15 16:03 ` [Qemu-trivial] [Qemu-devel] " 陈梁
2014-04-27 8:48 ` Paolo Bonzini [this message]
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