diff options
Diffstat (limited to 'arch/s390/kernel/entry.S')
| -rw-r--r-- | arch/s390/kernel/entry.S | 20 |
1 files changed, 2 insertions, 18 deletions
diff --git a/arch/s390/kernel/entry.S b/arch/s390/kernel/entry.S index 960c08700cf6..4cc3408c4dac 100644 --- a/arch/s390/kernel/entry.S +++ b/arch/s390/kernel/entry.S @@ -52,16 +52,7 @@ _LPP_OFFSET = __LC_LPP ALT_FACILITY(193) .endm - .macro CHECK_STACK savearea, lowcore -#ifdef CONFIG_CHECK_STACK - tml %r15,THREAD_SIZE - CONFIG_STACK_GUARD - la %r14,\savearea(\lowcore) - jz stack_overflow -#endif - .endm - .macro CHECK_VMAP_STACK savearea, lowcore, oklabel -#ifdef CONFIG_VMAP_STACK lgr %r14,%r15 nill %r14,0x10000 - THREAD_SIZE oill %r14,STACK_INIT_OFFSET @@ -77,9 +68,6 @@ _LPP_OFFSET = __LC_LPP je \oklabel la %r14,\savearea(\lowcore) j stack_overflow -#else - j \oklabel -#endif .endm /* @@ -326,8 +314,7 @@ SYM_CODE_START(pgm_check_handler) jnz 2f # -> enabled, can't be a double fault tm __LC_PGM_ILC+3(%r13),0x80 # check for per exception jnz .Lpgm_svcper # -> single stepped svc -2: CHECK_STACK __LC_SAVE_AREA,%r13 - aghi %r15,-(STACK_FRAME_OVERHEAD + __PT_SIZE) +2: aghi %r15,-(STACK_FRAME_OVERHEAD + __PT_SIZE) # CHECK_VMAP_STACK branches to stack_overflow or 4f CHECK_VMAP_STACK __LC_SAVE_AREA,%r13,4f 3: lg %r15,__LC_KERNEL_STACK(%r13) @@ -394,8 +381,7 @@ SYM_CODE_START(\name) BPENTER __SF_SIE_FLAGS(%r15),_TIF_ISOLATE_BP_GUEST SIEEXIT __SF_SIE_CONTROL(%r15),%r13 #endif -0: CHECK_STACK __LC_SAVE_AREA,%r13 - aghi %r15,-(STACK_FRAME_OVERHEAD + __PT_SIZE) +0: aghi %r15,-(STACK_FRAME_OVERHEAD + __PT_SIZE) j 2f 1: lctlg %c1,%c1,__LC_KERNEL_ASCE(%r13) lg %r15,__LC_KERNEL_STACK(%r13) @@ -603,7 +589,6 @@ SYM_CODE_END(early_pgm_check_handler) .section .kprobes.text, "ax" -#if defined(CONFIG_CHECK_STACK) || defined(CONFIG_VMAP_STACK) /* * The synchronous or the asynchronous stack overflowed. We are dead. * No need to properly save the registers, we are going to panic anyway. @@ -621,7 +606,6 @@ SYM_CODE_START(stack_overflow) lgr %r2,%r11 # pass pointer to pt_regs jg kernel_stack_overflow SYM_CODE_END(stack_overflow) -#endif .section .data, "aw" .balign 4 |