Reviewed-by: Alexandru Elisei <alexandru.elisei at arm.com>
Tested-by: Alexandru Elisei <alexandru.elisei at arm.com>
Signed-off-by: Andrew Jones <drjones at redhat.com>
---
The original posting didn't consider arm32. I kept Alexandru's tags
for this new version though, as the tweaks should be safe. Also
added __builtin_unreachable as suggested by Alexandru.
arm/selftest.c | 25 +++++++++++++++++++++++++
1 file changed, 25 insertions(+)
diff --git a/arm/selftest.c b/arm/selftest.c
index ea5101ef7217..28a17f7a7531 100644
--- a/arm/selftest.c
+++ b/arm/selftest.c
@@ -17,6 +17,13 @@
#include <asm/smp.h>
#include <asm/barrier.h>
+static void __user_psci_system_off(void)
+{
+ psci_system_off();
+ halt();
+ __builtin_unreachable();
+}
+
static void check_setup(int argc, char **argv)
{
int nr_tests = 0, len, i;
@@ -154,6 +161,11 @@ static bool check_svc(void)
return svc_works;
}
+
+static void user_psci_system_off(struct pt_regs *regs)
+{
+ __user_psci_system_off();
+}
#elif defined(__aarch64__)
/*
@@ -270,12 +282,25 @@ static bool check_svc(void)
return svc_works;
}
+
+static void user_psci_system_off(struct pt_regs *regs, unsigned int esr)
+{
+ __user_psci_system_off();
+}
#endif
static void check_vectors(void *arg __unused)
{
report("und", check_und());
report("svc", check_svc());
+ if (is_user()) {
+#ifdef __arm__
+ install_exception_handler(EXCPTN_UND, user_psci_system_off);
+#else
+ install_exception_handler(EL0_SYNC_64, ESR_EL1_EC_UNKNOWN,
+ user_psci_system_off);
+#endif
+ }
exit(report_summary());
}
--
2.18.1
