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From: | Paolo Bonzini |
Subject: | Re: [Qemu-devel] [Qemu-trivial] [PATCH] arch_init.c: remove duplicate function |
Date: | Sun, 27 Apr 2014 10:48:09 +0200 |
User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.4.0 |
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
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