netdev - Re: [PATCH net-next v2 1/3] net/sched: add retpoline wrapper for tc

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Message-ID: <20221202101331.178f0bcb@kernel.org>
Date:   Fri, 2 Dec 2022 10:13:31 -0800
From:   Jakub Kicinski <kuba@...nel.org>
To:     Pedro Tammela <pctammela@...atatu.com>
Cc:     netdev@...r.kernel.org, davem@...emloft.net, edumazet@...gle.com,
        pabeni@...hat.com, jhs@...atatu.com, xiyou.wangcong@...il.com,
        jiri@...nulli.us, kuniyu@...zon.com
Subject: Re: [PATCH net-next v2 1/3] net/sched: add retpoline wrapper for tc

On Fri, 2 Dec 2022 09:48:49 -0300 Pedro Tammela wrote:
> > Most definitely not to this reader :) The less macro magic the better.
> > I'm primarily curious about whether the compiler treats this sort of
> > construct the same as a switch.  
> 
> Apparently we can't do a switch case in pointer addresses because the 
> case condition must be constant.

Ack, thanks for checking!