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Wed, 13 Sep 2023 14:05:42 -0700 (PDT) Received: from charlie.ba.rivosinc.com ([66.220.2.162]) by smtp.gmail.com with ESMTPSA id z16-20020a170903019000b001ab2b4105ddsm66323plg.60.2023.09.13.14.05.41 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 13 Sep 2023 14:05:41 -0700 (PDT) From: Charlie Jenkins Date: Wed, 13 Sep 2023 14:04:50 -0700 Subject: [PATCH 2/2] riscv: Add tests for riscv module loading MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20230913-module_relocations-v1-2-bb3d8467e793@rivosinc.com> References: <20230913-module_relocations-v1-0-bb3d8467e793@rivosinc.com> In-Reply-To: <20230913-module_relocations-v1-0-bb3d8467e793@rivosinc.com> To: linux-riscv@lists.infradead.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org Cc: Eric Biederman , Kees Cook , Paul Walmsley , Palmer Dabbelt , Albert Ou , Charlie Jenkins X-Mailer: b4 0.12.3 X-Rspamd-Server: rspam09 X-Rspamd-Queue-Id: 85990140002 X-Stat-Signature: jeezswp6srh9jiedtcr6eug3ba3r8xar X-Rspam-User: X-HE-Tag: 1694639143-832998 X-HE-Meta: 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 xR0/P9z5 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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000015, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: Add test cases for the two main groups of relocations added: SUB and SET. Signed-off-by: Charlie Jenkins --- arch/riscv/Kconfig.debug | 1 + arch/riscv/kernel/Makefile | 1 + arch/riscv/kernel/tests/Kconfig.debug | 32 +++++++++++ arch/riscv/kernel/tests/Makefile | 1 + arch/riscv/kernel/tests/module_test/Makefile | 11 ++++ .../tests/module_test/test_module_linking_main.c | 64 ++++++++++++++++++++++ arch/riscv/kernel/tests/module_test/test_set16.S | 23 ++++++++ arch/riscv/kernel/tests/module_test/test_set32.S | 20 +++++++ arch/riscv/kernel/tests/module_test/test_set6.S | 23 ++++++++ arch/riscv/kernel/tests/module_test/test_set8.S | 23 ++++++++ arch/riscv/kernel/tests/module_test/test_sub16.S | 22 ++++++++ arch/riscv/kernel/tests/module_test/test_sub32.S | 22 ++++++++ arch/riscv/kernel/tests/module_test/test_sub6.S | 22 ++++++++ arch/riscv/kernel/tests/module_test/test_sub64.S | 27 +++++++++ arch/riscv/kernel/tests/module_test/test_sub8.S | 22 ++++++++ 15 files changed, 314 insertions(+) diff --git a/arch/riscv/Kconfig.debug b/arch/riscv/Kconfig.debug index e69de29bb2d1..eafe17ebf710 100644 --- a/arch/riscv/Kconfig.debug +++ b/arch/riscv/Kconfig.debug @@ -0,0 +1 @@ +source "arch/riscv/kernel/tests/Kconfig.debug" diff --git a/arch/riscv/kernel/Makefile b/arch/riscv/kernel/Makefile index 6ac56af42f4a..8310f62732fe 100644 --- a/arch/riscv/kernel/Makefile +++ b/arch/riscv/kernel/Makefile @@ -56,6 +56,7 @@ obj-y += stacktrace.o obj-y += cacheinfo.o obj-y += patch.o obj-y += probes/ +obj-y += tests/ obj-$(CONFIG_MMU) += vdso.o vdso/ obj-$(CONFIG_RISCV_M_MODE) += traps_misaligned.o diff --git a/arch/riscv/kernel/tests/Kconfig.debug b/arch/riscv/kernel/tests/Kconfig.debug new file mode 100644 index 000000000000..05ca55fb4645 --- /dev/null +++ b/arch/riscv/kernel/tests/Kconfig.debug @@ -0,0 +1,32 @@ +# SPDX-License-Identifier: GPL-2.0-only +menu "arch/riscv/kernel Testing and Coverage" + +menuconfig RUNTIME_KERNEL_TESTING_MENU + bool "arch/riscv/kernel runtime Testing" + def_bool y + help + Enable riscv kernel runtime testing. + +if RUNTIME_KERNEL_TESTING_MENU + +config RISCV_MODULE_LINKING_KUNIT + bool "KUnit test riscv module linking at runtime" if !KUNIT_ALL_TESTS + depends on KUNIT + default KUNIT_ALL_TESTS + help + Enable this option to test riscv module linking at boot. This will + enable a module called "test_module_linking". + + KUnit tests run during boot and output the results to the debug log + in TAP format (http://testanything.org/). Only useful for kernel devs + running the KUnit test harness, and not intended for inclusion into a + production build. + + For more information on KUnit and unit tests in general please refer + to the KUnit documentation in Documentation/dev-tools/kunit/. + + If unsure, say N. + +endif # RUNTIME_TESTING_MENU + +endmenu # "arch/riscv/kernel runtime Testing" diff --git a/arch/riscv/kernel/tests/Makefile b/arch/riscv/kernel/tests/Makefile new file mode 100644 index 000000000000..7d6c76cffe20 --- /dev/null +++ b/arch/riscv/kernel/tests/Makefile @@ -0,0 +1 @@ +obj-$(CONFIG_RISCV_MODULE_LINKING_KUNIT) += module_test/ diff --git a/arch/riscv/kernel/tests/module_test/Makefile b/arch/riscv/kernel/tests/module_test/Makefile new file mode 100644 index 000000000000..4b54978468ec --- /dev/null +++ b/arch/riscv/kernel/tests/module_test/Makefile @@ -0,0 +1,11 @@ +obj-m += test_module_linking.o + +test_sub := test_sub6.o test_sub8.o test_sub16.o test_sub32.o test_sub64.o + +test_set := test_set6.o test_set8.o test_set16.o test_set32.o + +test_module_linking-objs += $(test_sub) + +test_module_linking-objs += $(test_set) + +test_module_linking-objs += test_module_linking_main.o diff --git a/arch/riscv/kernel/tests/module_test/test_module_linking_main.c b/arch/riscv/kernel/tests/module_test/test_module_linking_main.c new file mode 100644 index 000000000000..61e053520b83 --- /dev/null +++ b/arch/riscv/kernel/tests/module_test/test_module_linking_main.c @@ -0,0 +1,64 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2023 Rivos Inc. + */ + +#include +#include +#include +#include + +MODULE_LICENSE("GPL"); + +extern int test_set32(void); +extern int test_set16(void); +extern int test_set8(void); +extern int test_set6(void); +extern long test_sub64(void); +extern int test_sub32(void); +extern int test_sub16(void); +extern int test_sub8(void); +extern int test_sub6(void); + +#define CHECK_EQ(lhs, rhs) KUNIT_ASSERT_EQ(test, lhs, rhs) + +void run_test_set(struct kunit *test) +{ + int val32 = test_set32(); + int val16 = test_set16(); + int val8 = test_set8(); + int val6 = test_set6(); + + CHECK_EQ(val32, 0); + CHECK_EQ(val16, 0); + CHECK_EQ(val8, 0); + CHECK_EQ(val6, 0); +} + +void run_test_sub(struct kunit *test) +{ + int val64 = test_sub64(); + int val32 = test_sub32(); + int val16 = test_sub16(); + int val8 = test_sub8(); + int val6 = test_sub6(); + + CHECK_EQ(val64, 0); + CHECK_EQ(val32, 0); + CHECK_EQ(val16, 0); + CHECK_EQ(val8, 0); + CHECK_EQ(val6, 0); +} + +static struct kunit_case __refdata riscv_module_linking_test_cases[] = { + KUNIT_CASE(run_test_set), + KUNIT_CASE(run_test_sub), + {} +}; + +static struct kunit_suite riscv_module_linking_test_suite = { + .name = "riscv_checksum", + .test_cases = riscv_module_linking_test_cases, +}; + +kunit_test_suites(&riscv_module_linking_test_suite); diff --git a/arch/riscv/kernel/tests/module_test/test_set16.S b/arch/riscv/kernel/tests/module_test/test_set16.S new file mode 100644 index 000000000000..2be0e441a12e --- /dev/null +++ b/arch/riscv/kernel/tests/module_test/test_set16.S @@ -0,0 +1,23 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2023 Rivos Inc. + */ + +.text +.global test_set16 +test_set16: + lw a0, set16 + la t0, set16 +#ifdef CONFIG_32BIT + slli t0, t0, 16 + srli t0, t0, 16 +#else + slli t0, t0, 48 + srli t0, t0, 48 +#endif + sub a0, a0, t0 + ret +.data +set16: + .reloc set16, R_RISCV_SET16, set16 + .word 0 diff --git a/arch/riscv/kernel/tests/module_test/test_set32.S b/arch/riscv/kernel/tests/module_test/test_set32.S new file mode 100644 index 000000000000..de0444537e67 --- /dev/null +++ b/arch/riscv/kernel/tests/module_test/test_set32.S @@ -0,0 +1,20 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2023 Rivos Inc. + */ + +.text +.global test_set32 +test_set32: + lw a0, set32 + la t0, set32 +#ifndef CONFIG_32BIT + slli t0, t0, 32 + srli t0, t0, 32 +#endif + sub a0, a0, t0 + ret +.data +set32: + .reloc set32, R_RISCV_SET32, set32 + .word 0 diff --git a/arch/riscv/kernel/tests/module_test/test_set6.S b/arch/riscv/kernel/tests/module_test/test_set6.S new file mode 100644 index 000000000000..c39ce4c219eb --- /dev/null +++ b/arch/riscv/kernel/tests/module_test/test_set6.S @@ -0,0 +1,23 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2023 Rivos Inc. + */ + +.text +.global test_set6 +test_set6: + lw a0, set6 + la t0, set6 +#ifdef CONFIG_32BIT + slli t0, t0, 26 + srli t0, t0, 26 +#else + slli t0, t0, 58 + srli t0, t0, 58 +#endif + sub a0, a0, t0 + ret +.data +set6: + .reloc set6, R_RISCV_SET6, set6 + .word 0 diff --git a/arch/riscv/kernel/tests/module_test/test_set8.S b/arch/riscv/kernel/tests/module_test/test_set8.S new file mode 100644 index 000000000000..a656173f6f99 --- /dev/null +++ b/arch/riscv/kernel/tests/module_test/test_set8.S @@ -0,0 +1,23 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2023 Rivos Inc. + */ + +.text +.global test_set8 +test_set8: + lw a0, set8 + la t0, set8 +#ifdef CONFIG_32BIT + slli t0, t0, 24 + srli t0, t0, 24 +#else + slli t0, t0, 56 + srli t0, t0, 56 +#endif + sub a0, a0, t0 + ret +.data +set8: + .reloc set8, R_RISCV_SET8, set8 + .word 0 diff --git a/arch/riscv/kernel/tests/module_test/test_sub16.S b/arch/riscv/kernel/tests/module_test/test_sub16.S new file mode 100644 index 000000000000..c561e155d1db --- /dev/null +++ b/arch/riscv/kernel/tests/module_test/test_sub16.S @@ -0,0 +1,22 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2023 Rivos Inc. + */ + +.text +.global test_sub16 +test_sub16: + lh a0, sub16 + addi a0, a0, -32 + ret +first: + .rept 8 + .word 0 + .endr +second: + +.data +sub16: + .reloc sub16, R_RISCV_ADD16, second + .reloc sub16, R_RISCV_SUB16, first + .half 0 diff --git a/arch/riscv/kernel/tests/module_test/test_sub32.S b/arch/riscv/kernel/tests/module_test/test_sub32.S new file mode 100644 index 000000000000..93232c70cae6 --- /dev/null +++ b/arch/riscv/kernel/tests/module_test/test_sub32.S @@ -0,0 +1,22 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2023 Rivos Inc. + */ + +.text +.global test_sub32 +test_sub32: + lw a0, sub32 + addi a0, a0, -32 + ret +first: + .rept 8 + .word 0 + .endr +second: + +.data +sub32: + .reloc sub32, R_RISCV_ADD32, second + .reloc sub32, R_RISCV_SUB32, first + .word 0 diff --git a/arch/riscv/kernel/tests/module_test/test_sub6.S b/arch/riscv/kernel/tests/module_test/test_sub6.S new file mode 100644 index 000000000000..d9c9526ceb62 --- /dev/null +++ b/arch/riscv/kernel/tests/module_test/test_sub6.S @@ -0,0 +1,22 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2023 Rivos Inc. + */ + +.text +.global test_sub6 +test_sub6: + lb a0, sub6 + addi a0, a0, -32 + ret +first: + .rept 8 + .word 0 + .endr +second: + +.data +sub6: + .reloc sub6, R_RISCV_SET6, second + .reloc sub6, R_RISCV_SUB6, first + .byte 0 diff --git a/arch/riscv/kernel/tests/module_test/test_sub64.S b/arch/riscv/kernel/tests/module_test/test_sub64.S new file mode 100644 index 000000000000..6d260e2a5d98 --- /dev/null +++ b/arch/riscv/kernel/tests/module_test/test_sub64.S @@ -0,0 +1,27 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2023 Rivos Inc. + */ + +.text +.global test_sub64 +test_sub64: +#ifdef CONFIG_32BIT + lw a0, sub64 +#else + ld a0, sub64 +#endif + addi a0, a0, -32 + ret +first: + .rept 8 + .word 0 + .endr +second: + +.data +sub64: + .reloc sub64, R_RISCV_ADD64, second + .reloc sub64, R_RISCV_SUB64, first + .word 0 + .word 0 diff --git a/arch/riscv/kernel/tests/module_test/test_sub8.S b/arch/riscv/kernel/tests/module_test/test_sub8.S new file mode 100644 index 000000000000..af7849115d4d --- /dev/null +++ b/arch/riscv/kernel/tests/module_test/test_sub8.S @@ -0,0 +1,22 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2023 Rivos Inc. + */ + +.text +.global test_sub8 +test_sub8: + lb a0, sub8 + addi a0, a0, -32 + ret +first: + .rept 8 + .word 0 + .endr +second: + +.data +sub8: + .reloc sub8, R_RISCV_ADD8, second + .reloc sub8, R_RISCV_SUB8, first + .byte 0 -- 2.34.1