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From: | Paolo Bonzini |
Subject: | Re: [Qemu-devel] Status of my hacks on the MTTCG WIP branch |
Date: | Fri, 15 Jan 2016 17:02:42 +0100 |
User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.4.0 |
On 15/01/2016 15:49, KONRAD Frederic wrote: > > /* Move the TB to the head of the list */ > - *ptb1 = tb->phys_hash_next; > - tb->phys_hash_next = tcg_ctx.tb_ctx.tb_phys_hash[h]; > - tcg_ctx.tb_ctx.tb_phys_hash[h] = tb; > +// *ptb1 = tb->phys_hash_next; > +// tb->phys_hash_next = tcg_ctx.tb_ctx.tb_phys_hash[h]; > +// tcg_ctx.tb_ctx.tb_phys_hash[h] = tb; This is the right fix. It's a *huge* performance hit to take the tb_lock around tb_find_fast. Paolo
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