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selftests/powerpc/dexcr: Add hashst/hashchk test

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Test the kernel DEXCR[NPHIE] interface and hashchk exception handling.

Introduces with it a DEXCR utils library for common DEXCR operations.

Volatile is used to prevent the compiler optimising away the signal
tests.

Signed-off-by: Benjamin Gray <bgray@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20230616034846.311705-11-bgray@linux.ibm.com
This commit is contained in:
Benjamin Gray
2023-06-19 17:36:27 +10:00
committed by Michael Ellerman
parent b9125c9aa0
commit bdb07f35a5
9 changed files with 449 additions and 0 deletions
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4
tools/testing/selftests/powerpc/include/utils.h
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@@ -11,6 +11,7 @@
#include <stdint.h>
#include <stdio.h>
#include <stdbool.h>
#include <sys/signal.h>
#include <linux/auxvec.h>
#include <linux/perf_event.h>
#include <asm/cputable.h>
@@ -111,6 +112,9 @@ static inline char *auxv_platform(void)
bool is_ppc64le(void);
int using_hash_mmu(bool *using_hash);
struct sigaction push_signal_handler(int sig, void (*fn)(int, siginfo_t *, void *));
struct sigaction pop_signal_handler(int sig, struct sigaction old_handler);
/* Yes, this is evil */
#define FAIL_IF(x) \
do { \