From mboxrd@z Thu Jan 1 00:00:00 1970 From: apinski@cavium.com (Andrew Pinski) Date: Sat, 24 May 2014 00:02:11 -0700 Subject: [PATCH 16/24] ARM64:ILP32 use the standard start_thread for ILP32 so the processor state is not AARCH32. In-Reply-To: <1400914939-9708-1-git-send-email-apinski@cavium.com> References: <1400914939-9708-1-git-send-email-apinski@cavium.com> Message-ID: <1400914939-9708-17-git-send-email-apinski@cavium.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org 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 --- 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