linux-kernel - Re: [PATCH v9 0/2] lib: checksum: Fix issues with checksum tests

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Date: Fri, 23 Feb 2024 09:22:58 +0000
From: Christophe Leroy <christophe.leroy@...roup.eu>
To: Michael Ellerman <mpe@...erman.id.au>, Palmer Dabbelt
	<palmer@...belt.com>, Charlie Jenkins <charlie@...osinc.com>
CC: "linux@...ck-us.net" <linux@...ck-us.net>, "David.Laight@...lab.com"
	<David.Laight@...lab.com>, "akpm@...ux-foundation.org"
	<akpm@...ux-foundation.org>, "deller@....de" <deller@....de>,
	"James.Bottomley@...senpartnership.com"
	<James.Bottomley@...senpartnership.com>, "linux-parisc@...r.kernel.org"
	<linux-parisc@...r.kernel.org>, "viro@...iv.linux.org.uk"
	<viro@...iv.linux.org.uk>, "linux-kernel@...r.kernel.org"
	<linux-kernel@...r.kernel.org>, "lkp@...el.com" <lkp@...el.com>
Subject: Re: [PATCH v9 0/2] lib: checksum: Fix issues with checksum tests



Le 23/02/2024 à 08:22, Michael Ellerman a écrit :
> Palmer Dabbelt <palmer@...belt.com> writes:
>> On Wed, 21 Feb 2024 18:55:48 PST (-0800), Charlie Jenkins wrote:
>>> The ip_fast_csum and csum_ipv6_magic tests did not work on all
>>> architectures due to differences in endianness and misaligned access
>>> support. Fix those issues by changing endianness of data and aligning
>>> the data.
>>>
>>> Signed-off-by: Charlie Jenkins <charlie@...osinc.com>
>>> ---
>>> Changes in v9:
>>> - Revert back to v7, the changes to v8 were not needed
>>> - Link to v8: https://lore.kernel.org/r/20240214-fix_sparse_errors_checksum_tests-v8-0-36b60e673593@rivosinc.com
> ...
>>>
>>> ---
>>> Charlie Jenkins (2):
>>>        lib: checksum: Fix type casting in checksum kunits
>>>        lib: checksum: Use aligned accesses for ip_fast_csum and csum_ipv6_magic tests
>>>
>>>   lib/checksum_kunit.c | 396 ++++++++++++++++++---------------------------------
>>>   1 file changed, 136 insertions(+), 260 deletions(-)
>>> ---
>>> base-commit: 6613476e225e090cc9aad49be7fa504e290dd33d
>>> change-id: 20240119-fix_sparse_errors_checksum_tests-26b86b34d784
>>
>> I put a
>>
>> Acked-by: Palmer Dabbelt <palmer@...osinc.com>
>>
>> on the v4, but looks like it got lost.  I'm happy to take this via the
>> RISC-V tree, as that's how I merged the broken patches in the first
>> place, but no big deal if someone else wants to pick it up.
>>
>> It looks like the issues are all resolved and such, but there's been a
>> long tail of them so I'm not 100% sure here...
> 
> I tested v9 on ppc32/64 BE, and it fixes the test failures and the
> sparse errors, so LGTM.
> 
> Tested-by: Michael Ellerman <mpe@...erman.id.au> (powerpc)

It magically works, but patch 1 is wrong and patch 2 subject is 
unrelated to the problem on powerpc.

This fix series needs rework.

Christophe