If we have both ILP32 and AARCH32 compiled in, we need use the non compat start
thread for ILP32. We have to use TIF_32BIT_AARCH64 explicit due to header
depency issues.
Thanks,
Andrew Pinski
Signed-off-by: Andrew Pinski <apin...@cavium.com>
---
arch/arm64/include/asm/processor.h | 9 +++++++++
1 files changed, 9 insertions(+), 0 deletions(-)
diff --git a/arch/arm64/include/asm/processor.h
b/arch/arm64/include/asm/processor.h
index ee487f3..c61deaf 100644
--- a/arch/arm64/include/asm/processor.h
+++ b/arch/arm64/include/asm/processor.h
@@ -103,6 +103,15 @@ static inline void start_thread(struct pt_regs *regs,
unsigned long pc,
static inline void compat_start_thread(struct pt_regs *regs, unsigned long pc,
unsigned long sp)
{
+#ifdef CONFIG_ARM64_ILP32
+ /* ILP32 thread are started the same way as LP64 threads.
+ Note we cannot use is_ilp32_compat_task here as that
+ would introduce a header depency issue. */
+ if (test_thread_flag(TIF_32BIT_AARCH64)) {
+ start_thread(regs, pc, sp);
+ return;
+ }
+#endif
start_thread_common(regs, pc);
regs->pstate = COMPAT_PSR_MODE_USR;
if (pc & 1)
--
1.7.2.5
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