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Re: Suggestions for TCG performance improvements

From: Richard Henderson
Subject: Re: Suggestions for TCG performance improvements
Date: Thu, 2 Dec 2021 22:30:19 -0800
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.14.0

On 12/2/21 9:21 PM, Emilio Cota wrote:
On Thu, Dec 2, 2021 at 4:47 AM Vasilev Oleg <vasilev.oleg@huawei.com> wrote:
The mentioned paper[4] also describes other possible improvements.
Some of those are already implemented (such as victim TLB and dynamic
size for TLB), but others are not (e.g. TLB lookup uninlining and
set-associative TLB layer). Do you think those improvements
worth trying?

I cannot find the emails, but I do remember that Richard wrote tcg-i386 patches
for uninlining TLB lookups. Unfortunately they resulted in a slowdown on
modern machines.

That code is still around at


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