Don't install default vector handlers on the usermode stack, as
they'll override handlers installed on the kernel stack.
Signed-off-by: Andrew Jones <drjones@xxxxxxxxxx>
---
lib/arm64/processor.c | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)
diff --git a/lib/arm64/processor.c b/lib/arm64/processor.c
index f0ce882527262..7f84fe3a09fb1 100644
--- a/lib/arm64/processor.c
+++ b/lib/arm64/processor.c
@@ -221,11 +221,16 @@ void install_vector_handler(enum vector v, vector_fn fn)
ti->vector_handlers[v] = fn;
}
-void thread_info_init(struct thread_info *ti, unsigned int flags)
+static void __thread_info_init(struct thread_info *ti, unsigned int flags)
{
memset(ti, 0, sizeof(struct thread_info));
ti->cpu = mpidr_to_cpu(get_mpidr());
ti->flags = flags;
+}
+
+void thread_info_init(struct thread_info *ti, unsigned int flags)
+{
+ __thread_info_init(ti, flags);
vector_handlers_default_init(ti->vector_handlers);
}
@@ -233,7 +238,7 @@ void start_usr(void (*func)(void *arg), void *arg, unsigned long sp_usr)
{
sp_usr &= (~15UL); /* stack ptr needs 16-byte alignment */
- thread_info_init(thread_info_sp(sp_usr), TIF_USER_MODE);
+ __thread_info_init(thread_info_sp(sp_usr), TIF_USER_MODE);
asm volatile(
"mov x0, %0\n"
--
2.4.3
--
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