From mboxrd@z Thu Jan 1 00:00:00 1970 From: ynorov@caviumnetworks.com (Yury Norov) Date: Wed, 18 Nov 2015 00:16:50 +0300 Subject: [PATCH v6 10/19] arm64:ilp32 use the native LP64 'start_thread' for ILP32 threads In-Reply-To: <1447795019-30176-1-git-send-email-ynorov@caviumnetworks.com> References: <1447795019-30176-1-git-send-email-ynorov@caviumnetworks.com> Message-ID: <1447795019-30176-11-git-send-email-ynorov@caviumnetworks.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org From: Andrew Pinski If we have both ILP32 and AARCH32 compiled in, we need use the non compat start thread for ILP32. Reviewed-by: David Daney Signed-off-by: Philipp Tomsich Signed-off-by: Christoph Muellner Signed-off-by: Yury Norov Signed-off-by: Andrew Pinski --- arch/arm64/include/asm/processor.h | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/arch/arm64/include/asm/processor.h b/arch/arm64/include/asm/processor.h index a415dd0..e244cb4 100644 --- a/arch/arm64/include/asm/processor.h +++ b/arch/arm64/include/asm/processor.h @@ -28,6 +28,7 @@ #ifdef __KERNEL__ #include +#include #include #include @@ -123,6 +124,15 @@ 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) -- 2.1.4