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Re: [PATCH 8/9] xen/bitops: Implement hweight32() in terms of hweightl()
- To: Jan Beulich <jbeulich@xxxxxxxx>
- From: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
- Date: Tue, 27 Aug 2024 13:05:52 +0100
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- Cc: Roger Pau Monné <roger.pau@xxxxxxxxxx>, Wei Liu <wl@xxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Julien Grall <julien@xxxxxxx>, Volodymyr Babchuk <Volodymyr_Babchuk@xxxxxxxx>, Bertrand Marquis <bertrand.marquis@xxxxxxx>, Michal Orzel <michal.orzel@xxxxxxx>, Oleksii Kurochko <oleksii.kurochko@xxxxxxxxx>, Shawn Anastasio <sanastasio@xxxxxxxxxxxxxxxxxxxxx>, Xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- Delivery-date: Tue, 27 Aug 2024 12:06:00 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 26/08/2024 12:59 pm, Jan Beulich wrote:
> On 23.08.2024 01:06, Andrew Cooper wrote:
>> ... and drop generic_hweight32().
>>
>> As noted previously, the only two users of hweight32() and they're both
>> singleton callers in __init paths, so it's not interesting to have a sub-GPR
>> optimised generic.
> I think it's clear what is meant, but the part of the sentence ahead of
> the comma is a little bumpy. As to not interesting: Perhaps indeed not
> right now, but new uses may appear and generally the overly wide
> operations may be (slightly) more expensive. Of course we can deal with
> the need when it arises, so ...
Oh yes, that is wonky. I'll rephrase.
>> No functional change.
>>
>> Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
> Acked-by: Jan Beulich <jbeulich@xxxxxxxx>
Thanks.
~Andrew
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