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From: Florian Westphal <fw@strlen.de>
To: <netdev@vger.kernel.org>
Cc: Paolo Abeni <pabeni@redhat.com>,
	"David S. Miller" <davem@davemloft.net>,
	Eric Dumazet <edumazet@google.com>,
	Jakub Kicinski <kuba@kernel.org>,
	<netfilter-devel@vger.kernel.org>,
	pablo@netfilter.org
Subject: [PATCH net-next 6/8] netfilter: nft_set_pipapo: remove redundant test for avx feature bit
Date: Mon,  1 Sep 2025 10:08:40 +0200	[thread overview]
Message-ID: <20250901080843.1468-7-fw@strlen.de> (raw)
In-Reply-To: <20250901080843.1468-1-fw@strlen.de>

Sebastian points out that avx2 depends on avx, see check_cpufeature_deps()
in arch/x86/kernel/cpu/cpuid-deps.c:
avx2 feature bit will be cleared when avx isn't available.

No functional change intended.

Reported-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Reviewed-by: Stefano Brivio <sbrivio@redhat.com>
Signed-off-by: Florian Westphal <fw@strlen.de>
---
 net/netfilter/nft_set_pipapo.c      | 3 +--
 net/netfilter/nft_set_pipapo_avx2.c | 2 +-
 2 files changed, 2 insertions(+), 3 deletions(-)

diff --git a/net/netfilter/nft_set_pipapo.c b/net/netfilter/nft_set_pipapo.c
index b385cfcf886f..4b64c3bd8e70 100644
--- a/net/netfilter/nft_set_pipapo.c
+++ b/net/netfilter/nft_set_pipapo.c
@@ -530,8 +530,7 @@ static struct nft_pipapo_elem *pipapo_get(const struct nft_pipapo_match *m,
 	local_bh_disable();
 
 #if defined(CONFIG_X86_64) && !defined(CONFIG_UML)
-	if (boot_cpu_has(X86_FEATURE_AVX2) && boot_cpu_has(X86_FEATURE_AVX) &&
-	    irq_fpu_usable()) {
+	if (boot_cpu_has(X86_FEATURE_AVX2) && irq_fpu_usable()) {
 		e = pipapo_get_avx2(m, data, genmask, tstamp);
 		local_bh_enable();
 		return e;
diff --git a/net/netfilter/nft_set_pipapo_avx2.c b/net/netfilter/nft_set_pipapo_avx2.c
index 29326f3fcaf3..7559306d0aed 100644
--- a/net/netfilter/nft_set_pipapo_avx2.c
+++ b/net/netfilter/nft_set_pipapo_avx2.c
@@ -1099,7 +1099,7 @@ bool nft_pipapo_avx2_estimate(const struct nft_set_desc *desc, u32 features,
 	    desc->field_count < NFT_PIPAPO_MIN_FIELDS)
 		return false;
 
-	if (!boot_cpu_has(X86_FEATURE_AVX2) || !boot_cpu_has(X86_FEATURE_AVX))
+	if (!boot_cpu_has(X86_FEATURE_AVX2))
 		return false;
 
 	est->size = pipapo_estimate_size(desc);
-- 
2.49.1


  parent reply	other threads:[~2025-09-01  8:09 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-09-01  8:08 [PATCH net-next 0/8] netfilter: updates for net-next Florian Westphal
2025-09-01  8:08 ` [PATCH net-next 1/8] netfilter: ebtables: Use vmalloc_array() to improve code Florian Westphal
2025-09-01  8:08 ` [PATCH net-next 2/8] netfilter: nft_payload: Use csum_replace4() instead of opencoding Florian Westphal
2025-09-01  8:08 ` [PATCH net-next 3/8] netfilter: nf_tables: allow iter callbacks to sleep Florian Westphal
2025-09-01  8:08 ` [PATCH net-next 4/8] netfilter: nf_tables: all transaction allocations can now sleep Florian Westphal
2025-09-01  8:08 ` [PATCH net-next 5/8] netfilter: nf_tables: Introduce NFTA_DEVICE_PREFIX Florian Westphal
2025-09-01 20:46   ` Jakub Kicinski
2025-09-01 21:12     ` Pablo Neira Ayuso
2025-09-02  0:04       ` Florian Westphal
2025-09-02 13:03         ` Paolo Abeni
2025-09-01  8:08 ` Florian Westphal [this message]
2025-09-01  8:08 ` [PATCH net-next 7/8] netfilter: nf_reject: remove unneeded exports Florian Westphal
2025-09-01  8:08 ` [PATCH net-next 8/8] netfilter: nft_payload: extend offset to 65535 bytes Florian Westphal
2025-09-02 10:53 ` [PATCH net-next 0/8] netfilter: updates for net-next Florian Westphal

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