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

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Date: Thu, 22 Feb 2024 12:27:57 -0800 (PST)
From: Palmer Dabbelt <palmer@...belt.com>
To: Charlie Jenkins <charlie@...osinc.com>
CC: linux@...ck-us.net, David.Laight@...lab.com, akpm@...ux-foundation.org,
  deller@....de, James.Bottomley@...senpartnership.com, linux-parisc@...r.kernel.org,
  viro@...iv.linux.org.uk, linux-kernel@...r.kernel.org, Charlie Jenkins <charlie@...osinc.com>,
  lkp@...el.com
Subject:     Re: [PATCH v9 0/2] lib: checksum: Fix issues with checksum tests

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
>
> Changes in v8:
> - Change ipv6_magic test case to use memcpy to avoid misalignment
> - Add Guenter's tested-by to patch 1 but not patch 2 since the later has
>   changed
> - Link to v7: https://lore.kernel.org/r/20240212-fix_sparse_errors_checksum_tests-v7-0-bbd3b8f64746@rivosinc.com
>
> Changes in v7:
> - Incorporate feedback for test_csum_ipv6_magic from Guenter and Al
> - Link to v6: https://lore.kernel.org/r/20240207-fix_sparse_errors_checksum_tests-v6-0-4caa9629705b@rivosinc.com
>
> Changes in v6:
> - Fix for big endian (Guenter)
> - Link to v5: https://lore.kernel.org/r/20240130-fix_sparse_errors_checksum_tests-v5-0-4d8a0a337e5e@rivosinc.com
>
> Changes in v5:
> - Add Guenter's tested-by
> - CC Andrew Morton
> - Link to v4: https://lore.kernel.org/r/20240124-fix_sparse_errors_checksum_tests-v4-0-bc2b8d23a35c@rivosinc.com
>
> Changes in v4:
> - Pad test values with zeroes (David)
> - Link to v3: https://lore.kernel.org/r/20240123-fix_sparse_errors_checksum_tests-v3-0-efecc7f94297@rivosinc.com
>
> Changes in v3:
> - Don't read memory out of bounds
> - Link to v2: https://lore.kernel.org/r/20240123-fix_sparse_errors_checksum_tests-v2-0-b306b6ce7da5@rivosinc.com
>
> Changes in v2:
> - Add additional patch to fix alignment issues
> - Link to v1: https://lore.kernel.org/r/20240119-fix_sparse_errors_checksum_tests-v1-1-2d3df86d8d78@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...