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// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) 2022 Intel Corporation
* Author: Tony Luck
*
* This software may be redistributed and/or modified under the terms of
* the GNU General Public License ("GPL") version 2 only as published by the
* Free Software Foundation.
*/
/*
* Allocate memory - loop using EINJ to inject a soft error,
* consuming after each until the page is taken offline.
*/
#include <sys/mman.h>
#include "einj.h"
char *progname;
long pagesize;
int Sflag;
volatile int trigger;
extern unsigned long long vtop(unsigned long long addr, pid_t pid);
#define MAX_TRIES 30
int main(int argc, char **argv)
{
char *addr = mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_SHARED|MAP_ANONYMOUS, -1, 0);
unsigned long long paddr;
int tries = MAX_TRIES;
int i;
pid_t pid;
progname = argv[0];
if (argc == 2)
tries = atoi(argv[1]);
if (addr == MAP_FAILED) {
perror("mmap");
return 1;
}
pid = getpid();
wfile(EINJ_ETYPE, 0x8);
wfile(EINJ_MASK, ~0x0ul);
wfile(EINJ_NOTRIGGER, 1);
*addr = '*';
paddr = vtop((unsigned long long)addr, pid);
for (i = 0; i < tries; i++) {
printf("%d: Inject to vaddr=%p paddr=0x%llx\n", i, addr, paddr);
wfile(EINJ_ADDR, paddr);
wfile(EINJ_DOIT, 1);
usleep(250);
trigger += *addr;
sleep(2);
if (paddr != vtop((unsigned long long)addr, pid))
break;
}
if (i == tries) {
fprintf(stderr, "FAIL: Page was not offline after %d errors\n", i);
return 1;
}
printf("PASS: page taken offline after %d corrected errors\n", i + 1);
return 0;
}
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