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 lists.ozlabs.org (lists.ozlabs.org [112.213.38.117]) (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 A4C21C4167B for ; Fri, 8 Dec 2023 06:04:03 +0000 (UTC) Authentication-Results: lists.ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=sifive.com header.i=@sifive.com header.a=rsa-sha256 header.s=google header.b=bJVg/fqX; dkim-atps=neutral Received: from boromir.ozlabs.org (localhost [IPv6:::1]) by lists.ozlabs.org (Postfix) with ESMTP id 4SmgZB2YDgz3vxH for ; Fri, 8 Dec 2023 17:04:02 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=sifive.com header.i=@sifive.com header.a=rsa-sha256 header.s=google header.b=bJVg/fqX; dkim-atps=neutral Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=sifive.com (client-ip=2607:f8b0:4864:20::62f; helo=mail-pl1-x62f.google.com; envelope-from=samuel.holland@sifive.com; receiver=lists.ozlabs.org) Received: from mail-pl1-x62f.google.com (mail-pl1-x62f.google.com [IPv6:2607:f8b0:4864:20::62f]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4SmgN56z6Dz3dBH for ; Fri, 8 Dec 2023 16:55:17 +1100 (AEDT) Received: by mail-pl1-x62f.google.com with SMTP id d9443c01a7336-1d0521554ddso14790015ad.2 for ; Thu, 07 Dec 2023 21:55:17 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sifive.com; s=google; t=1702014916; x=1702619716; darn=lists.ozlabs.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=jlkhIfYEZ3lvxXxXZeJnWgi8rztsMBcyR5bRnlna3ss=; b=bJVg/fqXGKjF3JBe5KbRw6ba9ekt9rE0tRxa9/vKwxpUdEwbV5BxBkig45WiH2fa0P xAY+rEhjdgRt5ImfZSRizDT8QCUwMxreReBcGcvFER8Dde4iKzH8/X4fSYLZL3YGvLmJ PgaOILDuqF0zo5GEZLtNHTGrcyFekV00GNpJtc5auJ+OxK+wW10275bF3D4qa3H6EhDc RrtkPgqBIJoclHfQXgsZQpEUcd2tpLhSMme4DtRiEaNG9eRKlDmbRN51YcEpf2N8Ee00 nk83RrsF6FW04Z6pTytF8A6TLa5ude2AbC4lQmQKUExds1pZ751iDYygEGUhn+5uFAW5 Zs5g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1702014916; x=1702619716; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=jlkhIfYEZ3lvxXxXZeJnWgi8rztsMBcyR5bRnlna3ss=; b=uPgrQisLGAOQH0nrcee7qW0prBJiWj9L91yHOuQtstagabx8XTSqjTBFI4OK1fUku+ RGPkDC7IfKmKHYCPVEqXGQ+9m53+NNBkZIHeU9l3tauCf/prmCBPhUmk4comDV8MBare IpTKsHlW3hyTPYeXtInynYkb+N00naEqtTcqLSJzLgaPOw91ZtY2LHpgf1OKk91jXvtW N/Ow2/hACEy445W8OTn6pMSOJKlCAZVtpHRE3+AlumKvWiFqElXgjHMxVKcQi1e626ZG FRGQkv8D9heu9h8bOeAZK0FoE44AgHWIK2lX6y1AlcG9H3j2i5bt6+g3vB5YU5SpH6WB BZVw== X-Gm-Message-State: AOJu0YxI60SGPLfAWMuN51C5ZcuYoATNaM8adg4jhJF/FvEZklZOE7Ok J47Y9qxM0EtBy/eqPFt3bKvw7A== X-Google-Smtp-Source: AGHT+IFq3S7FmJealx+s/zAc0NWuz2K3VM/cjjAkpGlz2K3tHlLviwkN/+BPcQyJZRioERW0JqTrBw== X-Received: by 2002:a17:902:b60f:b0:1d0:c7e0:c82c with SMTP id b15-20020a170902b60f00b001d0c7e0c82cmr2930083pls.8.1702014916347; Thu, 07 Dec 2023 21:55:16 -0800 (PST) Received: from sw06.internal.sifive.com ([4.53.31.132]) by smtp.gmail.com with ESMTPSA id s22-20020a170902989600b001ce5b859a59sm786250plp.305.2023.12.07.21.55.15 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 07 Dec 2023 21:55:16 -0800 (PST) From: Samuel Holland To: linux-arm-kernel@lists.infradead.org, loongarch@lists.linux.dev, linuxppc-dev@lists.ozlabs.org, x86@kernel.org, linux-riscv@lists.infradead.org, Christoph Hellwig Subject: [RFC PATCH 11/12] selftests/fpu: Move FP code to a separate translation unit Date: Thu, 7 Dec 2023 21:54:41 -0800 Message-ID: <20231208055501.2916202-12-samuel.holland@sifive.com> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20231208055501.2916202-1-samuel.holland@sifive.com> References: <20231208055501.2916202-1-samuel.holland@sifive.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org, amd-gfx@lists.freedesktop.org, Samuel Holland Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" This ensures no compiler-generated floating-point code can appear outside kernel_fpu_{begin,end}() sections, and some architectures enforce this separation. Signed-off-by: Samuel Holland --- lib/Makefile | 3 ++- lib/{test_fpu.c => test_fpu_glue.c} | 32 +------------------------- lib/test_fpu_impl.c | 35 +++++++++++++++++++++++++++++ 3 files changed, 38 insertions(+), 32 deletions(-) rename lib/{test_fpu.c => test_fpu_glue.c} (71%) create mode 100644 lib/test_fpu_impl.c diff --git a/lib/Makefile b/lib/Makefile index 6b09731d8e61..e7cbd54944a2 100644 --- a/lib/Makefile +++ b/lib/Makefile @@ -132,7 +132,8 @@ FPU_CFLAGS += $(call cc-option,-msse -mpreferred-stack-boundary=3,-mpreferred-st endif obj-$(CONFIG_TEST_FPU) += test_fpu.o -CFLAGS_test_fpu.o += $(FPU_CFLAGS) +test_fpu-y := test_fpu_glue.o test_fpu_impl.o +CFLAGS_test_fpu_impl.o += $(FPU_CFLAGS) obj-$(CONFIG_TEST_LIVEPATCH) += livepatch/ diff --git a/lib/test_fpu.c b/lib/test_fpu_glue.c similarity index 71% rename from lib/test_fpu.c rename to lib/test_fpu_glue.c index e82db19fed84..2761b51117b0 100644 --- a/lib/test_fpu.c +++ b/lib/test_fpu_glue.c @@ -19,37 +19,7 @@ #include #include -static int test_fpu(void) -{ - /* - * This sequence of operations tests that rounding mode is - * to nearest and that denormal numbers are supported. - * Volatile variables are used to avoid compiler optimizing - * the calculations away. - */ - volatile double a, b, c, d, e, f, g; - - a = 4.0; - b = 1e-15; - c = 1e-310; - - /* Sets precision flag */ - d = a + b; - - /* Result depends on rounding mode */ - e = a + b / 2; - - /* Denormal and very large values */ - f = b / c; - - /* Depends on denormal support */ - g = a + c * f; - - if (d > a && e > a && g > a) - return 0; - else - return -EINVAL; -} +int test_fpu(void); static int test_fpu_get(void *data, u64 *val) { diff --git a/lib/test_fpu_impl.c b/lib/test_fpu_impl.c new file mode 100644 index 000000000000..2ff01980bc22 --- /dev/null +++ b/lib/test_fpu_impl.c @@ -0,0 +1,35 @@ +// SPDX-License-Identifier: GPL-2.0+ + +#include + +int test_fpu(void) +{ + /* + * This sequence of operations tests that rounding mode is + * to nearest and that denormal numbers are supported. + * Volatile variables are used to avoid compiler optimizing + * the calculations away. + */ + volatile double a, b, c, d, e, f, g; + + a = 4.0; + b = 1e-15; + c = 1e-310; + + /* Sets precision flag */ + d = a + b; + + /* Result depends on rounding mode */ + e = a + b / 2; + + /* Denormal and very large values */ + f = b / c; + + /* Depends on denormal support */ + g = a + c * f; + + if (d > a && e > a && g > a) + return 0; + else + return -EINVAL; +} -- 2.42.0