From patchwork Thu Oct 3 17:18:52 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Jason A. Donenfeld" X-Patchwork-Id: 832520 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 88E041A3033 for ; Thu, 3 Oct 2024 17:19:07 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1727975947; cv=none; b=AR4oTrkg26zfKLweUiO2E2Q7tw/Gr2LW/lvgjMCc8UxWVg+51LcHigdW36eDiipD6CHAIuxcLdx+uAq6HYMoX83H8pH0I+2bgQ7yqYa+MMlPY/G0Qc+vSzqJ9LJuobkVD30/2rgsb1K+A3KpnwjwJzRJqwnBhfanx20WlAw3KbA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1727975947; c=relaxed/simple; bh=NA7IjeAkCez3D5MrCFxUmubsGu7CAdsjI8nkSedOvew=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=eKNxQeDRVPrHYnDO1gXK+CWdRxnh9M3W2SCrG5BrDYUHjX5ycieOjXt9LB1gCEWt2ErpJgWlgLxTz7RjNQbagwnK/NeLgFyoEpcQNQ4T5LLNISVllzXHlwgOoLVqJW9jQ7Kl3hrnH6dIdNZN72zasxIb13W3X6iXr2MCbwo0r/c= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=zx2c4.com header.i=@zx2c4.com header.b=I/bEAEVo; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=zx2c4.com header.i=@zx2c4.com header.b="I/bEAEVo" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 875C0C4CEC5; Thu, 3 Oct 2024 17:19:06 +0000 (UTC) Authentication-Results: smtp.kernel.org; dkim=pass (1024-bit key) header.d=zx2c4.com header.i=@zx2c4.com header.b="I/bEAEVo" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=zx2c4.com; s=20210105; t=1727975944; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=/dXY7UF9Q4bFxXXPJoUi2e9/1cduHdxX7QGyfhvnWTQ=; b=I/bEAEVoAovj3oMl46DJiQxv0GQd2CxT3Qm7SEkZFLJHu8ZRyt2TydaPN3LPUOauisaIAS oXSm8fYNi4spr85Bh72HsOkYM2TZh6FSZoSY8Oi0+Ce8nayQsz1WnO2dKgdc5HCjooR3/i CcGS5eTgzZSsuianR7r71ypFOXGMw+0= Received: by mail.zx2c4.com (ZX2C4 Mail Server) with ESMTPSA id 51536ef2 (TLSv1.3:TLS_AES_256_GCM_SHA384:256:NO); Thu, 3 Oct 2024 17:19:04 +0000 (UTC) From: "Jason A. Donenfeld" To: skhan@linuxfoundation.org, greg@kroah.com, linux-kselftest@vger.kernel.org Cc: "Jason A. Donenfeld" Subject: [PATCH kselftest 4/3] selftests: vDSO: unconditionally build chacha test Date: Thu, 3 Oct 2024 19:18:52 +0200 Message-ID: <20241003171852.2386463-1-Jason@zx2c4.com> In-Reply-To: <20241003031307.2236454-1-Jason@zx2c4.com> References: <20241003031307.2236454-1-Jason@zx2c4.com> Precedence: bulk X-Mailing-List: linux-kselftest@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Rather than using symlinks to find the vgetrandom-chacha.S file for each arch, store this in a file that uses the compiler to determine architecture, and then make use of weak symbols to skip the test on architectures that don't provide the code. Signed-off-by: Jason A. Donenfeld --- tools/arch/arm64/vdso | 1 - tools/arch/loongarch/vdso | 1 - tools/arch/powerpc/vdso | 1 - tools/arch/s390/vdso | 1 - tools/arch/x86/vdso | 1 - tools/testing/selftests/vDSO/Makefile | 6 +----- tools/testing/selftests/vDSO/vdso_test_chacha.c | 6 ++++++ .../selftests/vDSO/vgetrandom-chacha-finder.S | 16 ++++++++++++++++ 8 files changed, 23 insertions(+), 10 deletions(-) delete mode 120000 tools/arch/arm64/vdso delete mode 120000 tools/arch/loongarch/vdso delete mode 120000 tools/arch/powerpc/vdso delete mode 120000 tools/arch/s390/vdso delete mode 120000 tools/arch/x86/vdso create mode 100644 tools/testing/selftests/vDSO/vgetrandom-chacha-finder.S diff --git a/tools/arch/arm64/vdso b/tools/arch/arm64/vdso deleted file mode 120000 index 233c7a26f6e5..000000000000 --- a/tools/arch/arm64/vdso +++ /dev/null @@ -1 +0,0 @@ -../../../arch/arm64/kernel/vdso \ No newline at end of file diff --git a/tools/arch/loongarch/vdso b/tools/arch/loongarch/vdso deleted file mode 120000 index ebda43a82db7..000000000000 --- a/tools/arch/loongarch/vdso +++ /dev/null @@ -1 +0,0 @@ -../../../arch/loongarch/vdso \ No newline at end of file diff --git a/tools/arch/powerpc/vdso b/tools/arch/powerpc/vdso deleted file mode 120000 index 4e676d1d1cb4..000000000000 --- a/tools/arch/powerpc/vdso +++ /dev/null @@ -1 +0,0 @@ -../../../arch/powerpc/kernel/vdso \ No newline at end of file diff --git a/tools/arch/s390/vdso b/tools/arch/s390/vdso deleted file mode 120000 index 6cf4c1cebdcd..000000000000 --- a/tools/arch/s390/vdso +++ /dev/null @@ -1 +0,0 @@ -../../../arch/s390/kernel/vdso64 \ No newline at end of file diff --git a/tools/arch/x86/vdso b/tools/arch/x86/vdso deleted file mode 120000 index 7eb962fd3454..000000000000 --- a/tools/arch/x86/vdso +++ /dev/null @@ -1 +0,0 @@ -../../../arch/x86/entry/vdso/ \ No newline at end of file diff --git a/tools/testing/selftests/vDSO/Makefile b/tools/testing/selftests/vDSO/Makefile index 96b4f2a766e2..e453c178d97f 100644 --- a/tools/testing/selftests/vDSO/Makefile +++ b/tools/testing/selftests/vDSO/Makefile @@ -1,6 +1,5 @@ # SPDX-License-Identifier: GPL-2.0 include ../../../scripts/Makefile.arch -top_srcdir = $(realpath ../../../..) TEST_GEN_PROGS := vdso_test_gettimeofday TEST_GEN_PROGS += vdso_test_getcpu @@ -11,15 +10,12 @@ TEST_GEN_PROGS += vdso_standalone_test_x86 endif TEST_GEN_PROGS += vdso_test_correctness TEST_GEN_PROGS += vdso_test_getrandom -ifneq ($(wildcard $(top_srcdir)/tools/arch/$(SRCARCH)/vdso/vgetrandom-chacha.S),) TEST_GEN_PROGS += vdso_test_chacha -endif CFLAGS := -std=gnu99 -O2 ifeq ($(CONFIG_X86_32),y) LDLIBS += -lgcc_s -TEST_GEN_PROGS := $(filter-out vdso_test_chacha,$(TEST_GEN_PROGS)) endif include ../lib.mk @@ -39,7 +35,7 @@ $(OUTPUT)/vdso_test_getrandom: CFLAGS += -isystem $(top_srcdir)/tools/include \ $(KHDR_INCLUDES) \ -isystem $(top_srcdir)/include/uapi -$(OUTPUT)/vdso_test_chacha: $(top_srcdir)/tools/arch/$(SRCARCH)/vdso/vgetrandom-chacha.S +$(OUTPUT)/vdso_test_chacha: vgetrandom-chacha-finder.S $(OUTPUT)/vdso_test_chacha: CFLAGS += -idirafter $(top_srcdir)/tools/include \ -idirafter $(top_srcdir)/tools/include/generated \ -idirafter $(top_srcdir)/arch/$(SRCARCH)/include \ diff --git a/tools/testing/selftests/vDSO/vdso_test_chacha.c b/tools/testing/selftests/vDSO/vdso_test_chacha.c index 60c5ea5cb925..e68f1cd4ebcf 100644 --- a/tools/testing/selftests/vDSO/vdso_test_chacha.c +++ b/tools/testing/selftests/vDSO/vdso_test_chacha.c @@ -78,6 +78,12 @@ typedef uint32_t u32; typedef uint64_t u64; #include +__attribute__((weak)) +void __arch_chacha20_blocks_nostack(u8 *dst_bytes, const u32 *key, u32 *counter, size_t nblocks) +{ + ksft_exit_skip("Not implemented on architecture\n"); +} + int main(int argc, char *argv[]) { enum { TRIALS = 1000, BLOCKS = 128, BLOCK_SIZE = 64 }; diff --git a/tools/testing/selftests/vDSO/vgetrandom-chacha-finder.S b/tools/testing/selftests/vDSO/vgetrandom-chacha-finder.S new file mode 100644 index 000000000000..1ca240ddaab7 --- /dev/null +++ b/tools/testing/selftests/vDSO/vgetrandom-chacha-finder.S @@ -0,0 +1,16 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2024 Jason A. Donenfeld . All Rights Reserved. + */ + +#if defined(__aarch64__) +#include "../../../../arch/arm64/kernel/vdso/vgetrandom-chacha.S" +#elif defined(__loongarch__) +#include "../../../../arch/loongarch/vdso/vgetrandom-chacha.S" +#elif defined(__powerpc__) || defined(__powerpc64__) +#include "../../../../arch/powerpc/kernel/vdso/vgetrandom-chacha.S" +#elif defined(__s390x__) +#include "../../../../arch/s390/kernel/vdso64/vgetrandom-chacha.S" +#elif defined(__x86_64__) +#include "../../../../arch/x86/entry/vdso/vgetrandom-chacha.S" +#endif