From: "Thomas Weißschuh" <linux@weissschuh•net>
To: Cedric Xing <cedric.xing@intel•com>
Cc: dan.j.williams@intel•com, sfr@canb•auug.org.au,
sathyanarayanan.kuppuswamy@linux•intel.com, yilun.xu@intel•com,
sameo@rivosinc•com, aik@amd•com, suzuki.poulose@arm•com,
steven.price@arm•com, lukas@wunner•de, greg@kroah•com,
linux-next@vger•kernel.org
Subject: Re: [PATCH v2] tsm-mr: Fix init breakage after bin_attrs constification by scoping non-const pointers to init phase
Date: Tue, 13 May 2025 18:49:17 +0200 [thread overview]
Message-ID: <ee550446-ef6f-4fd1-bffd-cc09f82bd883@t-8ch.de> (raw)
In-Reply-To: <20250513164154.10109-1-cedric.xing@intel.com>
On 2025-05-13 11:41:54-0500, Cedric Xing wrote:
> Commit 9bec944506fa ("sysfs: constify attribute_group::bin_attrs") enforced
> the ro-after-init principle by making elements of bin_attrs_new pointing to
> const.
>
> To align with this change, introduce a temporary variable `bap` within the
> initialization loop. This improves code clarity by explicitly marking the
> initialization scope and eliminates the need for type casts when assigning
> to bin_attrs_new.
>
> Signed-off-by: Cedric Xing <cedric.xing@intel•com>
> ---
> drivers/virt/coco/tsm-mr.c | 30 +++++++++++++++---------------
> 1 file changed, 15 insertions(+), 15 deletions(-)
<snip>
> @@ -244,7 +244,7 @@ EXPORT_SYMBOL_GPL(tsm_mr_create_attribute_group);
> void tsm_mr_free_attribute_group(const struct attribute_group *attr_grp)
> {
> if (!IS_ERR_OR_NULL(attr_grp)) {
> - kfree(attr_grp->bin_attrs);
> + kfree(attr_grp->bin_attrs_new);
This is good, but the assignment also needs to be done to .bin_attrs_new.
That is the code I can find on LKML:
https://lore.kernel.org/lkml/20250506-tdx-rtmr-v6-1-ac6ff5e9d58a@intel.com/
> kfree(container_of(attr_grp, struct tm_context, agrp));
> }
> }
>
> base-commit: 7c3f259dfe03f5dcd898126602818a8fbe94d3c5
> --
> 2.43.0
>
next prev parent reply other threads:[~2025-05-13 16:49 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-05-13 15:47 [PATCH] tsm-mr: Fix init breakage after bin_attrs constification by scoping non-const pointers to init phase Cedric Xing
2025-05-13 16:24 ` Thomas Weißschuh
2025-05-13 16:41 ` [PATCH v2] " Cedric Xing
2025-05-13 16:49 ` Thomas Weißschuh [this message]
2025-05-13 17:27 ` dan.j.williams
2025-05-13 17:29 ` dan.j.williams
2025-05-13 18:25 ` Thomas Weißschuh
2025-05-13 18:37 ` Dan Williams
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