In later patches during exec, we would like to access default regs.kuap to
control access to the user mapping. Having thread.regs set early makes the
code changes simpler.
Signed-off-by: Aneesh Kumar K.V <aneesh.ku...@linux.ibm.com>
---
arch/powerpc/kernel/process.c | 24 ++++++++++++------------
1 file changed, 12 insertions(+), 12 deletions(-)
diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c
index 9c21288f8645..78eedf0b5c30 100644
--- a/arch/powerpc/kernel/process.c
+++ b/arch/powerpc/kernel/process.c
@@ -1461,9 +1461,18 @@ void flush_thread(void)
#ifdef CONFIG_PPC_BOOK3S_64
void arch_setup_new_exec(void)
{
- if (radix_enabled())
- return;
- hash__setup_new_exec();
+ if (!radix_enabled())
+ hash__setup_new_exec();
+
+ /*
+ * If we exec out of a kernel thread then thread.regs will not be
+ * set. Do it now.
+ */
+ if (!current->thread.regs) {
+ struct pt_regs *regs = task_stack_page(current) + THREAD_SIZE;
+ current->thread.regs = regs - 1;
+ }
+
}
#endif
@@ -1709,15 +1718,6 @@ void start_thread(struct pt_regs *regs, unsigned long
start, unsigned long sp)
#endif
#endif
- /*
- * If we exec out of a kernel thread then thread.regs will not be
- * set. Do it now.
- */
- if (!current->thread.regs) {
- struct pt_regs *regs = task_stack_page(current) + THREAD_SIZE;
- current->thread.regs = regs - 1;
- }
-
#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
/*
* Clear any transactional state, we're exec()ing. The cause is
--
2.25.3
