From: Pavel Begunkov <asml.silence@gmail.com>
To: io-uring@vger.kernel.org
Cc: asml.silence@gmail.com
Subject: [zcrx-next 01/10] io_uring/zcrx: replace memchar_inv with is_zero
Date: Sun, 17 Aug 2025 23:43:27 +0100 [thread overview]
Message-ID: <443aef75c919b66217d5f651718c95aaef28564e.1755467432.git.asml.silence@gmail.com> (raw)
In-Reply-To: <cover.1755467432.git.asml.silence@gmail.com>
memchr_inv() is more ambiguous than mem_is_zero(), so use the latter
for zero checks.
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
---
io_uring/zcrx.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/io_uring/zcrx.c b/io_uring/zcrx.c
index e5ff49f3425e..66bede4f8f44 100644
--- a/io_uring/zcrx.c
+++ b/io_uring/zcrx.c
@@ -561,7 +561,7 @@ int io_register_zcrx_ifq(struct io_ring_ctx *ctx,
return -EFAULT;
if (copy_from_user(&rd, u64_to_user_ptr(reg.region_ptr), sizeof(rd)))
return -EFAULT;
- if (memchr_inv(®.__resv, 0, sizeof(reg.__resv)) ||
+ if (!mem_is_zero(®.__resv, sizeof(reg.__resv)) ||
reg.__resv2 || reg.zcrx_id)
return -EINVAL;
if (reg.if_rxq == -1 || !reg.rq_entries || reg.flags)
--
2.49.0
next prev parent reply other threads:[~2025-08-17 22:42 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-08-17 22:43 [zcrx-next 00/10] next zcrx cleanups Pavel Begunkov
2025-08-17 22:43 ` Pavel Begunkov [this message]
2025-08-17 22:43 ` [zcrx-next 02/10] io_uring/zcrx: use page_pool_unref_and_test() Pavel Begunkov
2025-08-17 22:43 ` [zcrx-next 03/10] io_uring/zcrx: remove extra io_zcrx_drop_netdev Pavel Begunkov
2025-08-17 22:43 ` [zcrx-next 04/10] io_uring/zcrx: rename dma lock Pavel Begunkov
2025-08-17 22:43 ` [zcrx-next 05/10] io_uring/zcrx: protect netdev with pp_lock Pavel Begunkov
2025-08-17 22:43 ` [zcrx-next 06/10] io_uring/zcrx: unify allocation dma sync Pavel Begunkov
2025-08-17 22:43 ` [zcrx-next 07/10] io_uring/zcrx: reduce netmem scope in refill Pavel Begunkov
2025-08-17 22:43 ` [zcrx-next 08/10] io_uring/zcrx: use guards for the refill lock Pavel Begunkov
2025-08-17 22:43 ` [zcrx-next 09/10] io_uring/zcrx: don't adjust free cache space Pavel Begunkov
2025-08-17 22:43 ` [zcrx-next 10/10] io_uring/zcrx: rely on cache size truncation on refill Pavel Begunkov
2025-08-20 18:20 ` [zcrx-next 00/10] next zcrx cleanups Jens Axboe
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