Messages in this thread Patch in this message | | | From | Yury Norov <> | Subject | [PATCH v6 10/19] arm64:ilp32 use the native LP64 'start_thread' for ILP32 threads | Date | Wed, 18 Nov 2015 00:16:50 +0300 |
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From: Andrew Pinski <apinski@cavium.com>
If we have both ILP32 and AARCH32 compiled in, we need use the non compat start thread for ILP32.
Reviewed-by: David Daney <ddaney@caviumnetworks.com>
Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com> Signed-off-by: Christoph Muellner <christoph.muellner@theobroma-systems.com> Signed-off-by: Yury Norov <ynorov@caviumnetworks.com> Signed-off-by: Andrew Pinski <Andrew.Pinski@caviumnetworks.com> --- 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 <linux/string.h> +#include <linux/thread_info.h> #include <asm/fpsimd.h> #include <asm/hw_breakpoint.h> @@ -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
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