diff options
| -rw-r--r-- | arch/powerpc/Kconfig.debug | 6 | ||||
| -rw-r--r-- | arch/powerpc/kernel/exceptions-64s.S | 5 |
2 files changed, 11 insertions, 0 deletions
diff --git a/arch/powerpc/Kconfig.debug b/arch/powerpc/Kconfig.debug index c86df246339e..b8a1eb42a38d 100644 --- a/arch/powerpc/Kconfig.debug +++ b/arch/powerpc/Kconfig.debug @@ -369,4 +369,10 @@ config PPC_HTDUMP def_bool y depends on PPC_PTDUMP && PPC_BOOK3S +config PPC_FAST_ENDIAN_SWITCH + bool "Deprecated fast endian-switch syscall" + depends on DEBUG_KERNEL && PPC_BOOK3S_64 + help + If you're unsure what this is, say N. + endmenu diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S index acddfe79395d..d001aa4c69a1 100644 --- a/arch/powerpc/kernel/exceptions-64s.S +++ b/arch/powerpc/kernel/exceptions-64s.S @@ -879,6 +879,7 @@ EXC_COMMON(trap_0b_common, 0xb00, unknown_exception) rfid ; \ b . ; /* prevent speculative execution */ +#ifdef CONFIG_PPC_FAST_ENDIAN_SWITCH #define SYSCALL_FASTENDIAN_TEST \ BEGIN_FTR_SECTION \ cmpdi r0,0x1ebe ; \ @@ -893,6 +894,10 @@ END_FTR_SECTION_IFSET(CPU_FTR_REAL_LE) \ mr r13,r9 ; \ rfid ; /* return to userspace */ \ b . ; /* prevent speculative execution */ +#else +#define SYSCALL_FASTENDIAN_TEST +#define SYSCALL_FASTENDIAN +#endif /* CONFIG_PPC_FAST_ENDIAN_SWITCH */ #if defined(CONFIG_RELOCATABLE) /* |