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authorLinus Torvalds <torvalds@linux-foundation.org>2023-07-07 20:07:19 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2023-07-07 20:07:19 +0300
commit4f6b6c2b2f86b7878a770736bf478d8a263ff0bc (patch)
treec83b3755c1a14ffb571ce7ce49c9f74cb243a22d /tools
parent22dcc7d77fa463914bc2a2fb4580e6d183ca415d (diff)
parente8605e8fdf42642048b7e59141deaf8e4cf06d71 (diff)
downloadlinux-4f6b6c2b2f86b7878a770736bf478d8a263ff0bc.tar.xz
Merge tag 'riscv-for-linus-6.5-mw2' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux
Pull more RISC-V updates from Palmer Dabbelt: - A bunch of fixes/cleanups from the first part of the merge window, mostly related to ACPI and vector as those were large - Some documentation improvements, mostly related to the new code - The "riscv,isa" DT key is deprecated - Support for link-time dead code elimination - Support for minor fault registration in userfaultd - A handful of cleanups around CMO alternatives * tag 'riscv-for-linus-6.5-mw2' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: (23 commits) riscv: mm: mark noncoherent_supported as __ro_after_init riscv: mm: mark CBO relate initialization funcs as __init riscv: errata: thead: only set cbom size & noncoherent during boot riscv: Select HAVE_ARCH_USERFAULTFD_MINOR RISC-V: Document the ISA string parsing rules for ACPI risc-v: Fix order of IPI enablement vs RCU startup mm: riscv: fix an unsafe pte read in huge_pte_alloc() dt-bindings: riscv: deprecate riscv,isa RISC-V: drop error print from riscv_hartid_to_cpuid() riscv: Discard vector state on syscalls riscv: move memblock_allow_resize() after linear mapping is ready riscv: Enable ARCH_SUSPEND_POSSIBLE for s2idle riscv: vdso: include vdso/vsyscall.h for vdso_data selftests: Test RISC-V Vector's first-use handler riscv: vector: clear V-reg in the first-use trap riscv: vector: only enable interrupts in the first-use trap RISC-V: Fix up some vector state related build failures RISC-V: Document that V registers are clobbered on syscalls riscv: disable HAVE_LD_DEAD_CODE_DATA_ELIMINATION for LLD riscv: enable HAVE_LD_DEAD_CODE_DATA_ELIMINATION ...
Diffstat (limited to 'tools')
-rw-r--r--tools/testing/selftests/riscv/vector/.gitignore1
-rw-r--r--tools/testing/selftests/riscv/vector/Makefile6
-rw-r--r--tools/testing/selftests/riscv/vector/v_initval_nolibc.c68
3 files changed, 74 insertions, 1 deletions
diff --git a/tools/testing/selftests/riscv/vector/.gitignore b/tools/testing/selftests/riscv/vector/.gitignore
index 4f2b4e8a3b08..9ae7964491d5 100644
--- a/tools/testing/selftests/riscv/vector/.gitignore
+++ b/tools/testing/selftests/riscv/vector/.gitignore
@@ -1,2 +1,3 @@
vstate_exec_nolibc
vstate_prctl
+v_initval_nolibc
diff --git a/tools/testing/selftests/riscv/vector/Makefile b/tools/testing/selftests/riscv/vector/Makefile
index cd6e80bf995d..bfff0ff4f3be 100644
--- a/tools/testing/selftests/riscv/vector/Makefile
+++ b/tools/testing/selftests/riscv/vector/Makefile
@@ -2,7 +2,7 @@
# Copyright (C) 2021 ARM Limited
# Originally tools/testing/arm64/abi/Makefile
-TEST_GEN_PROGS := vstate_prctl
+TEST_GEN_PROGS := vstate_prctl v_initval_nolibc
TEST_GEN_PROGS_EXTENDED := vstate_exec_nolibc
include ../../lib.mk
@@ -13,3 +13,7 @@ $(OUTPUT)/vstate_prctl: vstate_prctl.c ../hwprobe/sys_hwprobe.S
$(OUTPUT)/vstate_exec_nolibc: vstate_exec_nolibc.c
$(CC) -nostdlib -static -include ../../../../include/nolibc/nolibc.h \
-Wall $(CFLAGS) $(LDFLAGS) $^ -o $@ -lgcc
+
+$(OUTPUT)/v_initval_nolibc: v_initval_nolibc.c
+ $(CC) -nostdlib -static -include ../../../../include/nolibc/nolibc.h \
+ -Wall $(CFLAGS) $(LDFLAGS) $^ -o $@ -lgcc
diff --git a/tools/testing/selftests/riscv/vector/v_initval_nolibc.c b/tools/testing/selftests/riscv/vector/v_initval_nolibc.c
new file mode 100644
index 000000000000..66764edb0d52
--- /dev/null
+++ b/tools/testing/selftests/riscv/vector/v_initval_nolibc.c
@@ -0,0 +1,68 @@
+// SPDX-License-Identifier: GPL-2.0-only
+
+#include "../../kselftest.h"
+#define MAX_VSIZE (8192 * 32)
+
+void dump(char *ptr, int size)
+{
+ int i = 0;
+
+ for (i = 0; i < size; i++) {
+ if (i != 0) {
+ if (i % 16 == 0)
+ printf("\n");
+ else if (i % 8 == 0)
+ printf(" ");
+ }
+ printf("%02x ", ptr[i]);
+ }
+ printf("\n");
+}
+
+int main(void)
+{
+ int i;
+ unsigned long vl;
+ char *datap, *tmp;
+
+ datap = malloc(MAX_VSIZE);
+ if (!datap) {
+ ksft_test_result_fail("fail to allocate memory for size = %lu\n", MAX_VSIZE);
+ exit(-1);
+ }
+
+ tmp = datap;
+ asm volatile (
+ ".option push\n\t"
+ ".option arch, +v\n\t"
+ "vsetvli %0, x0, e8, m8, ta, ma\n\t"
+ "vse8.v v0, (%2)\n\t"
+ "add %1, %2, %0\n\t"
+ "vse8.v v8, (%1)\n\t"
+ "add %1, %1, %0\n\t"
+ "vse8.v v16, (%1)\n\t"
+ "add %1, %1, %0\n\t"
+ "vse8.v v24, (%1)\n\t"
+ ".option pop\n\t"
+ : "=&r" (vl), "=r" (tmp) : "r" (datap) : "memory");
+
+ ksft_print_msg("vl = %lu\n", vl);
+
+ if (datap[0] != 0x00 && datap[0] != 0xff) {
+ ksft_test_result_fail("v-regesters are not properly initialized\n");
+ dump(datap, vl * 4);
+ exit(-1);
+ }
+
+ for (i = 1; i < vl * 4; i++) {
+ if (datap[i] != datap[0]) {
+ ksft_test_result_fail("detect stale values on v-regesters\n");
+ dump(datap, vl * 4);
+ exit(-2);
+ }
+ }
+
+ free(datap);
+ ksft_exit_pass();
+ return 0;
+}