diff options
Diffstat (limited to 'arch/s390/kernel/entry.S')
| -rw-r--r-- | arch/s390/kernel/entry.S | 17 |
1 files changed, 7 insertions, 10 deletions
diff --git a/arch/s390/kernel/entry.S b/arch/s390/kernel/entry.S index ed5acf95235f..f7953bb17558 100644 --- a/arch/s390/kernel/entry.S +++ b/arch/s390/kernel/entry.S @@ -70,6 +70,8 @@ _LPP_OFFSET = __LC_LPP je \oklabel clg %r14,__LC_ASYNC_STACK je \oklabel + clg %r14,__LC_MCCK_STACK + je \oklabel clg %r14,__LC_NODAT_STACK je \oklabel clg %r14,__LC_RESTART_STACK @@ -548,20 +550,16 @@ ENTRY(mcck_int_handler) jhe .Lmcck_stack lghi %r11,__LC_GPREGS_SAVE_AREA+64 # inside critical section, do cleanup brasl %r14,.Lcleanup_sie -.Lmcck_stack: #endif - CHECK_STACK __LC_GPREGS_SAVE_AREA+64 - lgr %r11,%r15 - aghi %r15,-(STACK_FRAME_OVERHEAD + __PT_SIZE) - stg %r11,__SF_BACKCHAIN(%r15) - j 5f + j .Lmcck_stack .Lmcck_user: BPENTER __TI_flags(%r12),_TIF_ISOLATE_BP +.Lmcck_stack: + lg %r15,__LC_MCCK_STACK +.Lmcck_skip: + la %r11,STACK_FRAME_OVERHEAD(%r15) lctlg %c1,%c1,__LC_KERNEL_ASCE - lg %r15,__LC_KERNEL_STACK xc __SF_BACKCHAIN(8,%r15),__SF_BACKCHAIN(%r15) -5: la %r11,STACK_FRAME_OVERHEAD(%r15) -.Lmcck_skip: lghi %r14,__LC_GPREGS_SAVE_AREA+64 stmg %r0,%r7,__PT_R0(%r11) # clear user controlled registers to prevent speculative use @@ -602,7 +600,6 @@ ENTRY(mcck_int_handler) .Lmcck_panic: lg %r15,__LC_NODAT_STACK - la %r11,STACK_FRAME_OVERHEAD(%r15) j .Lmcck_skip ENDPROC(mcck_int_handler) |