linux-kernel - Re: [PATCH net-next v2] powerpc/net: Implement powerpc specific csum

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Date:   Fri, 11 Mar 2022 11:00:13 +0000
From:   patchwork-bot+netdevbpf@...nel.org
To:     Christophe Leroy <christophe.leroy@...roup.eu>
Cc:     davem@...emloft.net, kuba@...nel.org, benh@...nel.crashing.org,
        paulus@...ba.org, mpe@...erman.id.au, linux-kernel@...r.kernel.org,
        netdev@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org
Subject: Re: [PATCH net-next v2] powerpc/net: Implement powerpc specific
 csum_shift() to remove branch

Hello:

This patch was applied to netdev/net-next.git (master)
by David S. Miller <davem@...emloft.net>:

On Tue,  8 Mar 2022 17:12:10 +0100 you wrote:
> Today's implementation of csum_shift() leads to branching based on
> parity of 'offset'
> 
> 	000002f8 <csum_block_add>:
> 	     2f8:	70 a5 00 01 	andi.   r5,r5,1
> 	     2fc:	41 a2 00 08 	beq     304 <csum_block_add+0xc>
> 	     300:	54 84 c0 3e 	rotlwi  r4,r4,24
> 	     304:	7c 63 20 14 	addc    r3,r3,r4
> 	     308:	7c 63 01 94 	addze   r3,r3
> 	     30c:	4e 80 00 20 	blr
> 
> [...]

Here is the summary with links:
  - [net-next,v2] powerpc/net: Implement powerpc specific csum_shift() to remove branch
    https://git.kernel.org/netdev/net-next/c/3af722cb735d

You are awesome, thank you!
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