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Based on 1 normalized pattern(s): licensed under gplv2 extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 99 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Alexios Zavras <alexios.zavras@intel.com> Reviewed-by: Richard Fontana <rfontana@redhat.com> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Steve Winslow <swinslow@gmail.com> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190528170027.163048684@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
43 lines
819 B
C
43 lines
819 B
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright 2016, Michael Ellerman, IBM Corp.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/mman.h>
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#include <asm/cputable.h>
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#include "utils.h"
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#define SIZE (64 * 1024)
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int test_prot_sao(void)
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{
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char *p;
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/* 2.06 or later should support SAO */
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SKIP_IF(!have_hwcap(PPC_FEATURE_ARCH_2_06));
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/*
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* Ensure we can ask for PROT_SAO.
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* We can't really verify that it does the right thing, but at least we
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* confirm the kernel will accept it.
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*/
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p = mmap(NULL, SIZE, PROT_READ | PROT_WRITE | PROT_SAO,
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MAP_ANONYMOUS | MAP_PRIVATE, -1, 0);
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FAIL_IF(p == MAP_FAILED);
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/* Write to the mapping, to at least cause a fault */
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memset(p, 0xaa, SIZE);
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return 0;
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}
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int main(void)
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{
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return test_harness(test_prot_sao, "prot-sao");
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}
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