diff options
Diffstat (limited to 'arch/s390/kernel/entry.S')
| -rw-r--r-- | arch/s390/kernel/entry.S | 36 |
1 files changed, 27 insertions, 9 deletions
diff --git a/arch/s390/kernel/entry.S b/arch/s390/kernel/entry.S index 269436665d02..d6d5317f768e 100644 --- a/arch/s390/kernel/entry.S +++ b/arch/s390/kernel/entry.S @@ -264,7 +264,7 @@ EXPORT_SYMBOL(sie_exit) */ SYM_CODE_START(system_call) - STMG_LC %r8,%r15,__LC_SAVE_AREA_SYNC + STMG_LC %r8,%r15,__LC_SAVE_AREA GET_LC %r13 stpt __LC_SYS_ENTER_TIMER(%r13) BPOFF @@ -287,7 +287,7 @@ SYM_CODE_START(system_call) xgr %r10,%r10 xgr %r11,%r11 la %r2,STACK_FRAME_OVERHEAD(%r15) # pointer to pt_regs - mvc __PT_R8(64,%r2),__LC_SAVE_AREA_SYNC(%r13) + mvc __PT_R8(64,%r2),__LC_SAVE_AREA(%r13) MBEAR %r2,%r13 lgr %r3,%r14 brasl %r14,__do_syscall @@ -323,7 +323,7 @@ SYM_CODE_END(ret_from_fork) */ SYM_CODE_START(pgm_check_handler) - STMG_LC %r8,%r15,__LC_SAVE_AREA_SYNC + STMG_LC %r8,%r15,__LC_SAVE_AREA GET_LC %r13 stpt __LC_SYS_ENTER_TIMER(%r13) BPOFF @@ -338,16 +338,16 @@ 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_SYNC,%r13 +2: CHECK_STACK __LC_SAVE_AREA,%r13 aghi %r15,-(STACK_FRAME_OVERHEAD + __PT_SIZE) # CHECK_VMAP_STACK branches to stack_overflow or 4f - CHECK_VMAP_STACK __LC_SAVE_AREA_SYNC,%r13,4f + CHECK_VMAP_STACK __LC_SAVE_AREA,%r13,4f 3: lg %r15,__LC_KERNEL_STACK(%r13) 4: la %r11,STACK_FRAME_OVERHEAD(%r15) xc __PT_FLAGS(8,%r11),__PT_FLAGS(%r11) xc __SF_BACKCHAIN(8,%r15),__SF_BACKCHAIN(%r15) stmg %r0,%r7,__PT_R0(%r11) - mvc __PT_R8(64,%r11),__LC_SAVE_AREA_SYNC(%r13) + mvc __PT_R8(64,%r11),__LC_SAVE_AREA(%r13) mvc __PT_LAST_BREAK(8,%r11),__LC_PGM_LAST_BREAK(%r13) stctg %c1,%c1,__PT_CR1(%r11) #if IS_ENABLED(CONFIG_KVM) @@ -398,7 +398,7 @@ SYM_CODE_END(pgm_check_handler) */ .macro INT_HANDLER name,lc_old_psw,handler SYM_CODE_START(\name) - STMG_LC %r8,%r15,__LC_SAVE_AREA_ASYNC + STMG_LC %r8,%r15,__LC_SAVE_AREA GET_LC %r13 stckf __LC_INT_CLOCK(%r13) stpt __LC_SYS_ENTER_TIMER(%r13) @@ -414,7 +414,7 @@ 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_ASYNC,%r13 +0: CHECK_STACK __LC_SAVE_AREA,%r13 aghi %r15,-(STACK_FRAME_OVERHEAD + __PT_SIZE) j 2f 1: lctlg %c1,%c1,__LC_KERNEL_ASCE(%r13) @@ -432,7 +432,7 @@ SYM_CODE_START(\name) xgr %r7,%r7 xgr %r10,%r10 xc __PT_FLAGS(8,%r11),__PT_FLAGS(%r11) - mvc __PT_R8(64,%r11),__LC_SAVE_AREA_ASYNC(%r13) + mvc __PT_R8(64,%r11),__LC_SAVE_AREA(%r13) MBEAR %r11,%r13 stmg %r8,%r9,__PT_PSW(%r11) lgr %r2,%r11 # pass pointer to pt_regs @@ -599,6 +599,24 @@ SYM_CODE_START(restart_int_handler) 3: j 3b SYM_CODE_END(restart_int_handler) + __INIT +SYM_CODE_START(early_pgm_check_handler) + STMG_LC %r8,%r15,__LC_SAVE_AREA + GET_LC %r13 + aghi %r15,-(STACK_FRAME_OVERHEAD+__PT_SIZE) + la %r11,STACK_FRAME_OVERHEAD(%r15) + xc __SF_BACKCHAIN(8,%r15),__SF_BACKCHAIN(%r15) + stmg %r0,%r7,__PT_R0(%r11) + mvc __PT_PSW(16,%r11),__LC_PGM_OLD_PSW(%r13) + mvc __PT_R8(64,%r11),__LC_SAVE_AREA(%r13) + lgr %r2,%r11 + brasl %r14,__do_early_pgm_check + mvc __LC_RETURN_PSW(16,%r13),STACK_FRAME_OVERHEAD+__PT_PSW(%r15) + lmg %r0,%r15,STACK_FRAME_OVERHEAD+__PT_R0(%r15) + LPSWEY __LC_RETURN_PSW,__LC_RETURN_LPSWE +SYM_CODE_END(early_pgm_check_handler) + __FINIT + .section .kprobes.text, "ax" #if defined(CONFIG_CHECK_STACK) || defined(CONFIG_VMAP_STACK) |