From: Michael Ellerman <mpe@ellerman.id.au>
To: linuxppc-dev@ozlabs.org
Subject: [PATCH 3/9] selftests/powerpc: Move set_dscr() into rfi_flush.c
Date: Wed, 19 Aug 2020 11:57:21 +1000 [thread overview]
Message-ID: <20200819015727.1977134-3-mpe@ellerman.id.au> (raw)
In-Reply-To: <20200819015727.1977134-1-mpe@ellerman.id.au>
This version of set_dscr() was added for the RFI flush test, and is
fairly specific to it. It also clashes with the version of set_dscr()
in dscr/dscr.h. So move it into the RFI flush test where it's used.
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
---
.../testing/selftests/powerpc/include/utils.h | 1 -
.../selftests/powerpc/security/rfi_flush.c | 35 +++++++++++++++++++
tools/testing/selftests/powerpc/utils.c | 35 -------------------
3 files changed, 35 insertions(+), 36 deletions(-)
diff --git a/tools/testing/selftests/powerpc/include/utils.h b/tools/testing/selftests/powerpc/include/utils.h
index 71d2924f5b8b..bba400d1bb90 100644
--- a/tools/testing/selftests/powerpc/include/utils.h
+++ b/tools/testing/selftests/powerpc/include/utils.h
@@ -35,7 +35,6 @@ int pick_online_cpu(void);
int read_debugfs_file(char *debugfs_file, int *result);
int write_debugfs_file(char *debugfs_file, int result);
int read_sysfs_file(char *debugfs_file, char *result, size_t result_size);
-void set_dscr(unsigned long val);
int perf_event_open_counter(unsigned int type,
unsigned long config, int group_fd);
int perf_event_enable(int fd);
diff --git a/tools/testing/selftests/powerpc/security/rfi_flush.c b/tools/testing/selftests/powerpc/security/rfi_flush.c
index 0a7d0afb26b8..fd37ff9b1c45 100644
--- a/tools/testing/selftests/powerpc/security/rfi_flush.c
+++ b/tools/testing/selftests/powerpc/security/rfi_flush.c
@@ -10,6 +10,7 @@
#include <stdint.h>
#include <malloc.h>
#include <unistd.h>
+#include <signal.h>
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
@@ -41,6 +42,40 @@ static void syscall_loop(char *p, unsigned long iterations,
}
}
+static void sigill_handler(int signr, siginfo_t *info, void *unused)
+{
+ static int warned = 0;
+ ucontext_t *ctx = (ucontext_t *)unused;
+ unsigned long *pc = &UCONTEXT_NIA(ctx);
+
+ /* mtspr 3,RS to check for move to DSCR below */
+ if ((*((unsigned int *)*pc) & 0xfc1fffff) == 0x7c0303a6) {
+ if (!warned++)
+ printf("WARNING: Skipping over dscr setup. Consider running 'ppc64_cpu --dscr=1' manually.\n");
+ *pc += 4;
+ } else {
+ printf("SIGILL at %p\n", pc);
+ abort();
+ }
+}
+
+static void set_dscr(unsigned long val)
+{
+ static int init = 0;
+ struct sigaction sa;
+
+ if (!init) {
+ memset(&sa, 0, sizeof(sa));
+ sa.sa_sigaction = sigill_handler;
+ sa.sa_flags = SA_SIGINFO;
+ if (sigaction(SIGILL, &sa, NULL))
+ perror("sigill_handler");
+ init = 1;
+ }
+
+ asm volatile("mtspr %1,%0" : : "r" (val), "i" (SPRN_DSCR));
+}
+
int rfi_flush_test(void)
{
char *p;
diff --git a/tools/testing/selftests/powerpc/utils.c b/tools/testing/selftests/powerpc/utils.c
index 638ffacc90aa..1f36ee1a909a 100644
--- a/tools/testing/selftests/powerpc/utils.c
+++ b/tools/testing/selftests/powerpc/utils.c
@@ -10,7 +10,6 @@
#include <fcntl.h>
#include <link.h>
#include <sched.h>
-#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
@@ -273,40 +272,6 @@ int perf_event_reset(int fd)
return 0;
}
-static void sigill_handler(int signr, siginfo_t *info, void *unused)
-{
- static int warned = 0;
- ucontext_t *ctx = (ucontext_t *)unused;
- unsigned long *pc = &UCONTEXT_NIA(ctx);
-
- /* mtspr 3,RS to check for move to DSCR below */
- if ((*((unsigned int *)*pc) & 0xfc1fffff) == 0x7c0303a6) {
- if (!warned++)
- printf("WARNING: Skipping over dscr setup. Consider running 'ppc64_cpu --dscr=1' manually.\n");
- *pc += 4;
- } else {
- printf("SIGILL at %p\n", pc);
- abort();
- }
-}
-
-void set_dscr(unsigned long val)
-{
- static int init = 0;
- struct sigaction sa;
-
- if (!init) {
- memset(&sa, 0, sizeof(sa));
- sa.sa_sigaction = sigill_handler;
- sa.sa_flags = SA_SIGINFO;
- if (sigaction(SIGILL, &sa, NULL))
- perror("sigill_handler");
- init = 1;
- }
-
- asm volatile("mtspr %1,%0" : : "r" (val), "i" (SPRN_DSCR));
-}
-
int using_hash_mmu(bool *using_hash)
{
char line[128];
--
2.25.1
next prev parent reply other threads:[~2020-08-19 2:12 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-19 1:57 [PATCH 1/9] selftests/powerpc: Make using_hash_mmu() work on Cell & PowerMac Michael Ellerman
2020-08-19 1:57 ` [PATCH 2/9] selftests/powerpc: Give the bad_accesses test longer to run Michael Ellerman
2020-08-19 1:57 ` Michael Ellerman [this message]
2020-08-19 1:57 ` [PATCH 4/9] selftests/powerpc: Include asm/cputable.h from utils.h Michael Ellerman
2020-08-19 1:57 ` [PATCH 5/9] selftests/powerpc: Don't run DSCR tests on old systems Michael Ellerman
2020-08-19 1:57 ` [PATCH 6/9] selftests/powerpc: Skip security tests on older CPUs Michael Ellerman
2020-08-19 1:57 ` [PATCH 7/9] selftests/powerpc: Skip L3 bank test " Michael Ellerman
2020-08-19 1:57 ` [PATCH 8/9] selftests/powerpc: Don't touch VMX/VSX " Michael Ellerman
2020-08-19 1:57 ` [PATCH 9/9] selftests/powerpc: Properly handle failure in switch_endian_test Michael Ellerman
2020-09-09 13:27 ` [PATCH 1/9] selftests/powerpc: Make using_hash_mmu() work on Cell & PowerMac Michael Ellerman
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