linux-kernel - Re: [PATCH v8 2/2] lib: checksum: Use aligned accesses for ip_fast_csum and csum_ipv6

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Date: Thu, 15 Feb 2024 22:58:46 -0800
From: Guenter Roeck <linux@...ck-us.net>
To: Helge Deller <deller@....de>
Cc: Charlie Jenkins <charlie@...osinc.com>,
 David Laight <David.Laight@...lab.com>, Palmer Dabbelt <palmer@...belt.com>,
 Andrew Morton <akpm@...ux-foundation.org>,
 Parisc List <linux-parisc@...r.kernel.org>, Al Viro
 <viro@...iv.linux.org.uk>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v8 2/2] lib: checksum: Use aligned accesses for
 ip_fast_csum and csum_ipv6_magic tests

Hi Helge,

On 2/15/24 23:31, Helge Deller wrote:
> On 2/16/24 06:25, Guenter Roeck wrote:
>> On Fri, Feb 16, 2024 at 06:54:55AM +0100, Helge Deller wrote:
>>>
>>> Can you please give a pointer to this test code?
>>> I'm happy to try it on real hardware.
>>>
>> See below.
> 
> Testcase runs OK on physical machine:
> 
> #### carry64 aligned, expect 1 -> 1
> #### carry64 unaligned 4, expect 1 -> 1
> #### carry64 unaligned 2, expect 1 -> 1
> #### carry32 aligned, expect 1 -> 1
> #### carry64 unaligned, expect 1 -> 1
> #### carry64 aligned, expect 0 -> 0
> #### carry64 unaligned 4, expect 0 -> 0
> #### carry64 unaligned 2, expect 0 -> 0
> #### carry32 aligned, expect 0 -> 0
> #### carry32 unaligned, expect 0 -> 0
>      ok 6 test_bad_carry
> 

thanks a lot for the confirmation.

Guenter