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Re: [PATCH v2 10/10] xxhash: remove qemu_xxhash7


From: Richard Henderson
Subject: Re: [PATCH v2 10/10] xxhash: remove qemu_xxhash7
Date: Wed, 3 May 2023 11:07:35 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.10.0

On 5/3/23 10:17, Alex Bennée wrote:
Now we no longer have users for qemu_xxhash7 we can drop an additional
multiply and rol and make qemu_xxhash6 the implementation. Adjust the
smaller hash functions accordingly.

Message-Id: <20230420150009.1675181-11-alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
---
  include/qemu/xxhash.h | 17 ++++-------------
  1 file changed, 4 insertions(+), 13 deletions(-)

Oh, well, I noticed during this review that we're not hashing cs_base, so probably expanding this to xxhash8 more proper.

cs_base is used for all kinds of important things, such as AArch64 flags expansion, so we might get better hashing performance by including it.


r~



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