From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 94916CCF9F8 for ; Fri, 31 Oct 2025 10:41:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Type:Cc:To:From: Subject:Message-ID:References:Mime-Version:In-Reply-To:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=0Xa3/Awesw6OMt3PSs2q2cBtqduLAjKaT7ji9cCCq90=; b=gGGdNSuWVW5ALFPPTZhR382Y+R YH+dhXdRlGqkRJXDJJd/9i0J5Z2c9shESeveeggEy9jjDjB9KJo5gjbPqxtq/0GjtU2ybgOSAbQpc t87p9pySMJjLI+t1sE/4cPbmL/KMzOVAaILG71QqiF0GiueylXSQ5j6hBSa6Z/RBksjmS8cgruFOx MYJxJE9h4AFYPb4emTL5MGqMUCpcafAEPd1ePbY3b+/scX9Ri/LpylZC85bAkcgSiFHP2Yhyd71HI 1U7Gfs08numaR/r9sCwf/D0RwXcrl+GSUVakEqa559lN3obQrG02UF5SC/nVlsgIBWB935q0nzHwU 1cBOACiQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1vEmZH-00000005vzA-0vsL; Fri, 31 Oct 2025 10:41:15 +0000 Received: from desiato.infradead.org ([2001:8b0:10b:1:d65d:64ff:fe57:4e05]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1vEmYC-00000005vK5-3bIL for linux-arm-kernel@bombadil.infradead.org; Fri, 31 Oct 2025 10:40:09 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=desiato.20200630; h=Content-Type:Cc:To:From:Subject: Message-ID:References:Mime-Version:In-Reply-To:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=0Xa3/Awesw6OMt3PSs2q2cBtqduLAjKaT7ji9cCCq90=; b=Nf4oUZZ0Q8wHTz7TQIqJsS5NbX 5VBRl0psp53A87hBqSZTmUssHyWr8onnRlCZF+CV7rssSqxIZpzvjKTrTpG0maUra5FDSGuVhSrVG z+35NtXRPcviCeYg90c6xA656o6kE594SsVgd5vaz7bMhKiSV74qgL1OupUhWuYc4uTLOn7HRxeFa jTLnpUjaimoZo9WspO2pQsEjAyO/rEoVw5SHBN/icURpn/TsD2sTgegOaoU7aiCdfht/JSCEo5DTv HRcub+NVr5hy9KN8d5Q3x9CCBMX6tClX6aT0yiRgT6Hph0sVcaIP2NqzNlVuJUp4lgL8hhFPBeeXb nmbwD93w==; Received: from mail-wm1-x349.google.com ([2a00:1450:4864:20::349]) by desiato.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1vElgR-0000000B3CB-0YaP for linux-arm-kernel@lists.infradead.org; Fri, 31 Oct 2025 09:44:36 +0000 Received: by mail-wm1-x349.google.com with SMTP id 5b1f17b1804b1-475dabb63f2so9485315e9.3 for ; Fri, 31 Oct 2025 03:40:05 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1761907204; x=1762512004; darn=lists.infradead.org; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=0Xa3/Awesw6OMt3PSs2q2cBtqduLAjKaT7ji9cCCq90=; b=tB9YfLM+EnJoJuY71UYakJaA6eQ4+lqhhXSIc/dXaNkTY0GoD0X9UexLrOzz2ebZNw dvz5y7svhWA5iJoj8lcDM5rAp9xZ0VGbvZOzybCe2RptMgteU3SuG5wCnA0daJQRC3J3 yaxBY5r5tmTP694hvtu0RVx2buv06leInv3F6h73sMuxYJISWiMM3wNrZMw0JYq9gzoS Wb6K/Qnjiqple6ONPy+JCHihwA+7bOYbSIVmJb0+81y1Wn23zJEEmGPwg1xv7oqkvwRM W5cUar6bIbJsltOVJ2/s8PMdAaWlsnTfQT3SW5M1qMF2uOiFoJ2ivMllFsW3Zjmoopv7 8VeQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1761907204; x=1762512004; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=0Xa3/Awesw6OMt3PSs2q2cBtqduLAjKaT7ji9cCCq90=; b=NZ+gWM3GNtiqy4phydntRX9DKhAJpW79N+utibodLTHuyL21+6IvY9oDiIRiMJ6YiO R3EZt6qnFuFZGnIpgZszwO2aayEo2xQi1Id4W0faKjtJ59MbJRIVgXJKnz1+yZb2iDoC Ygjelyu/jiJ6Mb1LiLOseompS/gAgL9Vv7omz1azbj8ZSpdivVwvbrj2Zumhfblr3oI+ kx0qchlyqDPTIpwHXTN9dWjw0nQwFRYKhubLnI8UKCPJ7vR5OjKpg0OttPIuA9JvzWTz Mpy9G6f8H5PsmC27YUJtDxG1+CDsBkxLXWoLVc9fx/YiO5JOHIZwfEpEhBiTHGSd0xLa 5NBQ== X-Gm-Message-State: AOJu0YwcpnAm+ZBL+KGjvbtcV9xf5RGsfJ/4djFOuQ8Lt27Rx/fCTUkQ Qwq9S+fpKFoOqaKMs8udX/mTla8M3M4I9tl5WwOboyOPGGIbkHfVVLjSHqmKW4g3eXlQBPZftJd gul9/k1TYslLoYA7kYMUDjHU9R+Qyuq+JQMU/DUlYqZRQnGFrR2Bi1sNYBlYZlsbpDqS17gLPOx vepcftiHeBWNQaYC8gDPqrn4RTbsXMmCVZIv8RtXM8lnxg X-Google-Smtp-Source: AGHT+IFG1Dv0rjVcEt2/0GVVIUFS+KzXMYU0UsEadz9yjstPJXyipRoXNOS4eHXBONiuPbDNnDbrnIrq X-Received: from wmwq8.prod.google.com ([2002:a05:600d:8348:b0:476:4b14:2edf]) (user=ardb job=prod-delivery.src-stubby-dispatcher) by 2002:a05:600c:538e:b0:46e:33b2:c8da with SMTP id 5b1f17b1804b1-47730890e99mr28895635e9.32.1761907204019; Fri, 31 Oct 2025 03:40:04 -0700 (PDT) Date: Fri, 31 Oct 2025 11:39:18 +0100 In-Reply-To: <20251031103858.529530-23-ardb+git@google.com> Mime-Version: 1.0 References: <20251031103858.529530-23-ardb+git@google.com> X-Developer-Key: i=ardb@kernel.org; a=openpgp; fpr=F43D03328115A198C90016883D200E9CA6329909 X-Developer-Signature: v=1; a=openpgp-sha256; l=1914; i=ardb@kernel.org; h=from:subject; bh=JNFlhs5YlNOgtpbYMnFMguYKcFlrOPN7ItLaOkFoa/A=; b=owGbwMvMwCVmkMcZplerG8N4Wi2JIZNl4r3azVwKvxa+e+bzxvzhjJCoDf0pmzLzjxfveskbc 3b79c+sHaUsDGJcDLJiiiwCs/++23l6olSt8yxZmDmsTCBDGLg4BWAiL3IY/qmunjvvbXvjWee2 punuZxcfZXy6++W/uyz//fM8bu+WUnjF8D/61YbAlb+lv9pt6nmpE1ux7mTG++LWrclW3s33r5W svsEDAA== X-Mailer: git-send-email 2.51.1.930.gacf6e81ea2-goog Message-ID: <20251031103858.529530-42-ardb+git@google.com> Subject: [PATCH v4 19/21] net/mlx5: Switch to more abstract scoped ksimd guard API on arm64 From: Ard Biesheuvel To: linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org, linux-crypto@vger.kernel.org, herbert@gondor.apana.org.au, ebiggers@kernel.org, Ard Biesheuvel , Saeed Mahameed , Leon Romanovsky , Tariq Toukan , Mark Bloch Content-Type: text/plain; charset="UTF-8" X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20251031_094435_295804_0D95781F X-CRM114-Status: GOOD ( 10.46 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: Ard Biesheuvel Instead of calling kernel_neon_begin/end directly, switch to the scoped guard API which encapsulates those calls. This is needed because the prototypes of those APIs are going to be modified and will require a kernel mode FP/SIMD buffer to be provided, which the scoped guard API will do transparently. Cc: Saeed Mahameed Cc: Leon Romanovsky Cc: Tariq Toukan Cc: Mark Bloch Signed-off-by: Ard Biesheuvel --- drivers/net/ethernet/mellanox/mlx5/core/wc.c | 19 ++++++++++--------- 1 file changed, 10 insertions(+), 9 deletions(-) diff --git a/drivers/net/ethernet/mellanox/mlx5/core/wc.c b/drivers/net/ethernet/mellanox/mlx5/core/wc.c index 05e5fd777d4f..815a7c97d6b0 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/wc.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/wc.c @@ -9,6 +9,7 @@ #if IS_ENABLED(CONFIG_KERNEL_MODE_NEON) && IS_ENABLED(CONFIG_ARM64) #include +#include #endif #define TEST_WC_NUM_WQES 255 @@ -264,15 +265,15 @@ static void mlx5_iowrite64_copy(struct mlx5_wc_sq *sq, __be32 mmio_wqe[16], { #if IS_ENABLED(CONFIG_KERNEL_MODE_NEON) && IS_ENABLED(CONFIG_ARM64) if (cpu_has_neon()) { - kernel_neon_begin(); - asm volatile - (".arch_extension simd\n\t" - "ld1 {v0.16b, v1.16b, v2.16b, v3.16b}, [%0]\n\t" - "st1 {v0.16b, v1.16b, v2.16b, v3.16b}, [%1]" - : - : "r"(mmio_wqe), "r"(sq->bfreg.map + offset) - : "memory", "v0", "v1", "v2", "v3"); - kernel_neon_end(); + scoped_ksimd() { + asm volatile( + ".arch_extension simd\n\t" + "ld1 {v0.16b, v1.16b, v2.16b, v3.16b}, [%0]\n\t" + "st1 {v0.16b, v1.16b, v2.16b, v3.16b}, [%1]" + : + : "r"(mmio_wqe), "r"(sq->bfreg.map + offset) + : "memory", "v0", "v1", "v2", "v3"); + } return; } #endif -- 2.51.1.930.gacf6e81ea2-goog