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a29e2a48af
Add hwprobe test for Zicboz and its block size. Also, when Zicboz is present, test that cbo.zero may be issued and works. Additionally provide a command line option that enables testing that the Zicbom instructions cause SIGILL and also that cbo.zero causes SIGILL when Zicboz it's not present. The SIGILL tests require "opt-in" with a command line option because the RISC-V ISA does not require unimplemented standard opcodes to issue illegal-instruction exceptions (but hopefully most platforms do). Pinning the test to a subset of cpus with taskset will also restrict the hwprobe calls to that set. Signed-off-by: Andrew Jones <ajones@ventanamicro.com> Reviewed-by: Xiao Wang <xiao.w.wang@intel.com> Link: https://lore.kernel.org/r/20230918131518.56803-14-ajones@ventanamicro.com Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
16 lines
478 B
C
16 lines
478 B
C
/* SPDX-License-Identifier: GPL-2.0-only */
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#ifndef SELFTEST_RISCV_HWPROBE_H
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#define SELFTEST_RISCV_HWPROBE_H
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#include <stddef.h>
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#include <asm/hwprobe.h>
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/*
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* Rather than relying on having a new enough libc to define this, just do it
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* ourselves. This way we don't need to be coupled to a new-enough libc to
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* contain the call.
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*/
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long riscv_hwprobe(struct riscv_hwprobe *pairs, size_t pair_count,
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size_t cpu_count, unsigned long *cpus, unsigned int flags);
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#endif
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