aboutsummaryrefslogtreecommitdiffstats
path: root/arch
diff options
context:
space:
mode:
Diffstat (limited to 'arch')
-rw-r--r--arch/s390/kernel/entry.S116
-rw-r--r--arch/s390/kernel/entry64.S113
2 files changed, 174 insertions, 55 deletions
diff --git a/arch/s390/kernel/entry.S b/arch/s390/kernel/entry.S
index 1a271b1..cbe7d6a 100644
--- a/arch/s390/kernel/entry.S
+++ b/arch/s390/kernel/entry.S
@@ -138,14 +138,14 @@ STACK_SIZE = 1 << STACK_SHIFT
st %r12,__SF_BACKCHAIN(%r15) # clear back chain
.endm
- .macro RESTORE_ALL sync
- mvc __LC_RETURN_PSW(8),SP_PSW(%r15) # move user PSW to lowcore
+ .macro RESTORE_ALL psworg,sync
+ mvc \psworg(8),SP_PSW(%r15) # move user PSW to lowcore
.if !\sync
- ni __LC_RETURN_PSW+1,0xfd # clear wait state bit
+ ni \psworg+1,0xfd # clear wait state bit
.endif
lm %r0,%r15,SP_R0(%r15) # load gprs 0-15 of user
STORE_TIMER __LC_EXIT_TIMER
- lpsw __LC_RETURN_PSW # back to caller
+ lpsw \psworg # back to caller
.endm
/*
@@ -235,7 +235,7 @@ sysc_return:
tm __TI_flags+3(%r9),_TIF_WORK_SVC
bnz BASED(sysc_work) # there is work to do (signals etc.)
sysc_leave:
- RESTORE_ALL 1
+ RESTORE_ALL __LC_RETURN_PSW,1
#
# recheck if there is more work to do
@@ -312,8 +312,6 @@ sysc_singlestep:
la %r14,BASED(sysc_return) # load adr. of system return
br %r1 # branch to do_single_step
-__critical_end:
-
#
# call trace before and after sys_call
#
@@ -571,7 +569,8 @@ io_return:
tm __TI_flags+3(%r9),_TIF_WORK_INT
bnz BASED(io_work) # there is work to do (signals etc.)
io_leave:
- RESTORE_ALL 0
+ RESTORE_ALL __LC_RETURN_PSW,0
+io_done:
#ifdef CONFIG_PREEMPT
io_preempt:
@@ -621,7 +620,7 @@ io_work_loop:
#
io_mcck_pending:
l %r1,BASED(.Ls390_handle_mcck)
- l %r14,BASED(io_work_loop)
+ la %r14,BASED(io_work_loop)
br %r1 # TIF bit will be cleared by handler
#
@@ -674,6 +673,8 @@ ext_no_vtime:
basr %r14,%r1
b BASED(io_return)
+__critical_end:
+
/*
* Machine check handler routines
*/
@@ -681,6 +682,7 @@ ext_no_vtime:
.globl mcck_int_handler
mcck_int_handler:
spt __LC_CPU_TIMER_SAVE_AREA # revalidate cpu timer
+ mvc __LC_ASYNC_ENTER_TIMER(8),__LC_CPU_TIMER_SAVE_AREA
lm %r0,%r15,__LC_GPREGS_SAVE_AREA # revalidate gprs
SAVE_ALL_BASE __LC_SAVE_AREA+32
la %r12,__LC_MCK_OLD_PSW
@@ -693,17 +695,8 @@ mcck_int_handler:
mvc __LC_ASYNC_ENTER_TIMER(8),__LC_LAST_UPDATE_TIMER
mvc __LC_SYNC_ENTER_TIMER(8),__LC_LAST_UPDATE_TIMER
mvc __LC_EXIT_TIMER(8),__LC_LAST_UPDATE_TIMER
-0: tm __LC_MCCK_CODE+2,0x08 # mwp of old psw valid?
- bno BASED(mcck_no_vtime) # no -> skip cleanup critical
- tm __LC_MCK_OLD_PSW+1,0x01 # interrupting from user ?
- bz BASED(mcck_no_vtime)
- UPDATE_VTIME __LC_EXIT_TIMER,__LC_ASYNC_ENTER_TIMER,__LC_USER_TIMER
- UPDATE_VTIME __LC_LAST_UPDATE_TIMER,__LC_EXIT_TIMER,__LC_SYSTEM_TIMER
- mvc __LC_LAST_UPDATE_TIMER(8),__LC_ASYNC_ENTER_TIMER
-mcck_no_vtime:
#endif
-0:
- tm __LC_MCCK_CODE+2,0x09 # mwp + ia of old psw valid?
+0: tm __LC_MCCK_CODE+2,0x09 # mwp + ia of old psw valid?
bno BASED(mcck_int_main) # no -> skip cleanup critical
tm __LC_MCK_OLD_PSW+1,0x01 # test problem state bit
bnz BASED(mcck_int_main) # from user -> load async stack
@@ -720,6 +713,16 @@ mcck_int_main:
be BASED(0f)
l %r15,__LC_PANIC_STACK # load panic stack
0: CREATE_STACK_FRAME __LC_MCK_OLD_PSW,__LC_SAVE_AREA+32
+#ifdef CONFIG_VIRT_CPU_ACCOUNTING
+ tm __LC_MCCK_CODE+2,0x08 # mwp of old psw valid?
+ bno BASED(mcck_no_vtime) # no -> skip cleanup critical
+ tm __LC_MCK_OLD_PSW+1,0x01 # interrupting from user ?
+ bz BASED(mcck_no_vtime)
+ UPDATE_VTIME __LC_EXIT_TIMER,__LC_ASYNC_ENTER_TIMER,__LC_USER_TIMER
+ UPDATE_VTIME __LC_LAST_UPDATE_TIMER,__LC_EXIT_TIMER,__LC_SYSTEM_TIMER
+ mvc __LC_LAST_UPDATE_TIMER(8),__LC_ASYNC_ENTER_TIMER
+mcck_no_vtime:
+#endif
l %r9,__LC_THREAD_INFO # load pointer to thread_info struct
la %r2,SP_PTREGS(%r15) # load pt_regs
l %r1,BASED(.Ls390_mcck)
@@ -737,7 +740,7 @@ mcck_int_main:
l %r1,BASED(.Ls390_handle_mcck)
basr %r14,%r1 # call machine check handler
mcck_return:
- RESTORE_ALL 0
+ RESTORE_ALL __LC_RETURN_MCCK_PSW,0
#ifdef CONFIG_SMP
/*
@@ -803,6 +806,10 @@ cleanup_table_sysc_leave:
.long sysc_leave + 0x80000000, sysc_work_loop + 0x80000000
cleanup_table_sysc_work_loop:
.long sysc_work_loop + 0x80000000, sysc_reschedule + 0x80000000
+cleanup_table_io_leave:
+ .long io_leave + 0x80000000, io_done + 0x80000000
+cleanup_table_io_work_loop:
+ .long io_work_loop + 0x80000000, io_mcck_pending + 0x80000000
cleanup_critical:
clc 4(4,%r12),BASED(cleanup_table_system_call)
@@ -825,10 +832,26 @@ cleanup_critical:
clc 4(4,%r12),BASED(cleanup_table_sysc_work_loop+4)
bl BASED(cleanup_sysc_return)
0:
+ clc 4(4,%r12),BASED(cleanup_table_io_leave)
+ bl BASED(0f)
+ clc 4(4,%r12),BASED(cleanup_table_io_leave+4)
+ bl BASED(cleanup_io_leave)
+0:
+ clc 4(4,%r12),BASED(cleanup_table_io_work_loop)
+ bl BASED(0f)
+ clc 4(4,%r12),BASED(cleanup_table_io_work_loop+4)
+ bl BASED(cleanup_io_return)
+0:
br %r14
cleanup_system_call:
mvc __LC_RETURN_PSW(8),0(%r12)
+ c %r12,BASED(.Lmck_old_psw)
+ be BASED(0f)
+ la %r12,__LC_SAVE_AREA+16
+ b BASED(1f)
+0: la %r12,__LC_SAVE_AREA+32
+1:
#ifdef CONFIG_VIRT_CPU_ACCOUNTING
clc __LC_RETURN_PSW+4(4),BASED(cleanup_system_call_insn+4)
bh BASED(0f)
@@ -838,11 +861,13 @@ cleanup_system_call:
#endif
clc __LC_RETURN_PSW+4(4),BASED(cleanup_system_call_insn)
bh BASED(0f)
- mvc __LC_SAVE_AREA(16),__LC_SAVE_AREA+16
-0: st %r13,__LC_SAVE_AREA+20
+ mvc __LC_SAVE_AREA(16),0(%r12)
+0: st %r13,4(%r12)
+ st %r12,__LC_SAVE_AREA+48 # argh
SAVE_ALL __LC_SVC_OLD_PSW,__LC_SAVE_AREA,1
CREATE_STACK_FRAME __LC_SVC_OLD_PSW,__LC_SAVE_AREA
- st %r15,__LC_SAVE_AREA+28
+ l %r12,__LC_SAVE_AREA+48 # argh
+ st %r15,12(%r12)
lh %r7,0x8a
#ifdef CONFIG_VIRT_CPU_ACCOUNTING
cleanup_vtime:
@@ -879,17 +904,21 @@ cleanup_sysc_return:
cleanup_sysc_leave:
clc 4(4,%r12),BASED(cleanup_sysc_leave_insn)
- be BASED(0f)
+ be BASED(2f)
#ifdef CONFIG_VIRT_CPU_ACCOUNTING
mvc __LC_EXIT_TIMER(8),__LC_ASYNC_ENTER_TIMER
clc 4(4,%r12),BASED(cleanup_sysc_leave_insn+4)
- be BASED(0f)
+ be BASED(2f)
#endif
mvc __LC_RETURN_PSW(8),SP_PSW(%r15)
- mvc __LC_SAVE_AREA+16(16),SP_R12(%r15)
- lm %r0,%r11,SP_R0(%r15)
+ c %r12,BASED(.Lmck_old_psw)
+ bne BASED(0f)
+ mvc __LC_SAVE_AREA+32(16),SP_R12(%r15)
+ b BASED(1f)
+0: mvc __LC_SAVE_AREA+16(16),SP_R12(%r15)
+1: lm %r0,%r11,SP_R0(%r15)
l %r15,SP_R15(%r15)
-0: la %r12,__LC_RETURN_PSW
+2: la %r12,__LC_RETURN_PSW
br %r14
cleanup_sysc_leave_insn:
#ifdef CONFIG_VIRT_CPU_ACCOUNTING
@@ -897,6 +926,36 @@ cleanup_sysc_leave_insn:
#endif
.long sysc_leave + 10 + 0x80000000
+cleanup_io_return:
+ mvc __LC_RETURN_PSW(4),0(%r12)
+ mvc __LC_RETURN_PSW+4(4),BASED(cleanup_table_io_work_loop)
+ la %r12,__LC_RETURN_PSW
+ br %r14
+
+cleanup_io_leave:
+ clc 4(4,%r12),BASED(cleanup_io_leave_insn)
+ be BASED(2f)
+#ifdef CONFIG_VIRT_CPU_ACCOUNTING
+ mvc __LC_EXIT_TIMER(8),__LC_ASYNC_ENTER_TIMER
+ clc 4(4,%r12),BASED(cleanup_io_leave_insn+4)
+ be BASED(2f)
+#endif
+ mvc __LC_RETURN_PSW(8),SP_PSW(%r15)
+ c %r12,BASED(.Lmck_old_psw)
+ bne BASED(0f)
+ mvc __LC_SAVE_AREA+32(16),SP_R12(%r15)
+ b BASED(1f)
+0: mvc __LC_SAVE_AREA+16(16),SP_R12(%r15)
+1: lm %r0,%r11,SP_R0(%r15)
+ l %r15,SP_R15(%r15)
+2: la %r12,__LC_RETURN_PSW
+ br %r14
+cleanup_io_leave_insn:
+#ifdef CONFIG_VIRT_CPU_ACCOUNTING
+ .long io_leave + 18 + 0x80000000
+#endif
+ .long io_leave + 14 + 0x80000000
+
/*
* Integer constants
*/
@@ -918,6 +977,7 @@ cleanup_sysc_leave_insn:
.Ls390_mcck: .long s390_do_machine_check
.Ls390_handle_mcck:
.long s390_handle_mcck
+.Lmck_old_psw: .long __LC_MCK_OLD_PSW
.Ldo_IRQ: .long do_IRQ
.Ldo_extint: .long do_extint
.Ldo_signal: .long do_signal
diff --git a/arch/s390/kernel/entry64.S b/arch/s390/kernel/entry64.S
index d9f2291..5db5976 100644
--- a/arch/s390/kernel/entry64.S
+++ b/arch/s390/kernel/entry64.S
@@ -131,14 +131,14 @@ _TIF_WORK_INT = (_TIF_SIGPENDING | _TIF_NEED_RESCHED | _TIF_MCCK_PENDING)
stg %r12,__SF_BACKCHAIN(%r15)
.endm
- .macro RESTORE_ALL sync
- mvc __LC_RETURN_PSW(16),SP_PSW(%r15) # move user PSW to lowcore
+ .macro RESTORE_ALL psworg,sync
+ mvc \psworg(16),SP_PSW(%r15) # move user PSW to lowcore
.if !\sync
- ni __LC_RETURN_PSW+1,0xfd # clear wait state bit
+ ni \psworg+1,0xfd # clear wait state bit
.endif
lmg %r0,%r15,SP_R0(%r15) # load gprs 0-15 of user
STORE_TIMER __LC_EXIT_TIMER
- lpswe __LC_RETURN_PSW # back to caller
+ lpswe \psworg # back to caller
.endm
/*
@@ -233,7 +233,7 @@ sysc_return:
tm __TI_flags+7(%r9),_TIF_WORK_SVC
jnz sysc_work # there is work to do (signals etc.)
sysc_leave:
- RESTORE_ALL 1
+ RESTORE_ALL __LC_RETURN_PSW,1
#
# recheck if there is more work to do
@@ -308,8 +308,6 @@ sysc_singlestep:
jg do_single_step # branch to do_sigtrap
-__critical_end:
-
#
# call syscall_trace before and after system call
# special linkage: %r12 contains the return address for trace_svc
@@ -612,7 +610,8 @@ io_return:
tm __TI_flags+7(%r9),_TIF_WORK_INT
jnz io_work # there is work to do (signals etc.)
io_leave:
- RESTORE_ALL 0
+ RESTORE_ALL __LC_RETURN_PSW,0
+io_done:
#ifdef CONFIG_PREEMPT
io_preempt:
@@ -711,6 +710,8 @@ ext_no_vtime:
brasl %r14,do_extint
j io_return
+__critical_end:
+
/*
* Machine check handler routines
*/
@@ -718,6 +719,7 @@ ext_no_vtime:
mcck_int_handler:
la %r1,4095 # revalidate r1
spt __LC_CPU_TIMER_SAVE_AREA-4095(%r1) # revalidate cpu timer
+ mvc __LC_ASYNC_ENTER_TIMER(8),__LC_CPU_TIMER_SAVE_AREA-4095(%r1)
lmg %r0,%r15,__LC_GPREGS_SAVE_AREA-4095(%r1)# revalidate gprs
SAVE_ALL_BASE __LC_SAVE_AREA+64
la %r12,__LC_MCK_OLD_PSW
@@ -730,17 +732,8 @@ mcck_int_handler:
mvc __LC_ASYNC_ENTER_TIMER(8),__LC_LAST_UPDATE_TIMER
mvc __LC_SYNC_ENTER_TIMER(8),__LC_LAST_UPDATE_TIMER
mvc __LC_EXIT_TIMER(8),__LC_LAST_UPDATE_TIMER
-0: tm __LC_MCCK_CODE+2,0x08 # mwp of old psw valid?
- jno mcck_no_vtime # no -> no timer update
- tm __LC_MCK_OLD_PSW+1,0x01 # interrupting from user ?
- jz mcck_no_vtime
- UPDATE_VTIME __LC_EXIT_TIMER,__LC_ASYNC_ENTER_TIMER,__LC_USER_TIMER
- UPDATE_VTIME __LC_LAST_UPDATE_TIMER,__LC_EXIT_TIMER,__LC_SYSTEM_TIMER
- mvc __LC_LAST_UPDATE_TIMER(8),__LC_ASYNC_ENTER_TIMER
-mcck_no_vtime:
#endif
-0:
- tm __LC_MCCK_CODE+2,0x09 # mwp + ia of old psw valid?
+0: tm __LC_MCCK_CODE+2,0x09 # mwp + ia of old psw valid?
jno mcck_int_main # no -> skip cleanup critical
tm __LC_MCK_OLD_PSW+1,0x01 # test problem state bit
jnz mcck_int_main # from user -> load kernel stack
@@ -756,6 +749,16 @@ mcck_int_main:
jz 0f
lg %r15,__LC_PANIC_STACK # load panic stack
0: CREATE_STACK_FRAME __LC_MCK_OLD_PSW,__LC_SAVE_AREA+64
+#ifdef CONFIG_VIRT_CPU_ACCOUNTING
+ tm __LC_MCCK_CODE+2,0x08 # mwp of old psw valid?
+ jno mcck_no_vtime # no -> no timer update
+ tm __LC_MCK_OLD_PSW+1,0x01 # interrupting from user ?
+ jz mcck_no_vtime
+ UPDATE_VTIME __LC_EXIT_TIMER,__LC_ASYNC_ENTER_TIMER,__LC_USER_TIMER
+ UPDATE_VTIME __LC_LAST_UPDATE_TIMER,__LC_EXIT_TIMER,__LC_SYSTEM_TIMER
+ mvc __LC_LAST_UPDATE_TIMER(8),__LC_ASYNC_ENTER_TIMER
+mcck_no_vtime:
+#endif
lg %r9,__LC_THREAD_INFO # load pointer to thread_info struct
la %r2,SP_PTREGS(%r15) # load pt_regs
brasl %r14,s390_do_machine_check
@@ -771,7 +774,7 @@ mcck_int_main:
jno mcck_return
brasl %r14,s390_handle_mcck
mcck_return:
- RESTORE_ALL 0
+ RESTORE_ALL __LC_RETURN_MCCK_PSW,0
#ifdef CONFIG_SMP
/*
@@ -833,6 +836,10 @@ cleanup_table_sysc_leave:
.quad sysc_leave, sysc_work_loop
cleanup_table_sysc_work_loop:
.quad sysc_work_loop, sysc_reschedule
+cleanup_table_io_leave:
+ .quad io_leave, io_done
+cleanup_table_io_work_loop:
+ .quad io_work_loop, io_mcck_pending
cleanup_critical:
clc 8(8,%r12),BASED(cleanup_table_system_call)
@@ -855,10 +862,26 @@ cleanup_critical:
clc 8(8,%r12),BASED(cleanup_table_sysc_work_loop+8)
jl cleanup_sysc_return
0:
+ clc 8(8,%r12),BASED(cleanup_table_io_leave)
+ jl 0f
+ clc 8(8,%r12),BASED(cleanup_table_io_leave+8)
+ jl cleanup_io_leave
+0:
+ clc 8(8,%r12),BASED(cleanup_table_io_work_loop)
+ jl 0f
+ clc 8(8,%r12),BASED(cleanup_table_io_work_loop+8)
+ jl cleanup_io_return
+0:
br %r14
cleanup_system_call:
mvc __LC_RETURN_PSW(16),0(%r12)
+ cghi %r12,__LC_MCK_OLD_PSW
+ je 0f
+ la %r12,__LC_SAVE_AREA+32
+ j 1f
+0: la %r12,__LC_SAVE_AREA+64
+1:
#ifdef CONFIG_VIRT_CPU_ACCOUNTING
clc __LC_RETURN_PSW+8(8),BASED(cleanup_system_call_insn+8)
jh 0f
@@ -868,11 +891,13 @@ cleanup_system_call:
#endif
clc __LC_RETURN_PSW+8(8),BASED(cleanup_system_call_insn)
jh 0f
- mvc __LC_SAVE_AREA(32),__LC_SAVE_AREA+32
-0: stg %r13,__LC_SAVE_AREA+40
+ mvc __LC_SAVE_AREA(32),0(%r12)
+0: stg %r13,8(%r12)
+ stg %r12,__LC_SAVE_AREA+96 # argh
SAVE_ALL __LC_SVC_OLD_PSW,__LC_SAVE_AREA,1
CREATE_STACK_FRAME __LC_SVC_OLD_PSW,__LC_SAVE_AREA
- stg %r15,__LC_SAVE_AREA+56
+ lg %r12,__LC_SAVE_AREA+96 # argh
+ stg %r15,24(%r12)
llgh %r7,__LC_SVC_INT_CODE
#ifdef CONFIG_VIRT_CPU_ACCOUNTING
cleanup_vtime:
@@ -909,17 +934,21 @@ cleanup_sysc_return:
cleanup_sysc_leave:
clc 8(8,%r12),BASED(cleanup_sysc_leave_insn)
- je 0f
+ je 2f
#ifdef CONFIG_VIRT_CPU_ACCOUNTING
mvc __LC_EXIT_TIMER(8),__LC_ASYNC_ENTER_TIMER
clc 8(8,%r12),BASED(cleanup_sysc_leave_insn+8)
- je 0f
+ je 2f
#endif
mvc __LC_RETURN_PSW(16),SP_PSW(%r15)
- mvc __LC_SAVE_AREA+32(32),SP_R12(%r15)
- lmg %r0,%r11,SP_R0(%r15)
+ cghi %r12,__LC_MCK_OLD_PSW
+ jne 0f
+ mvc __LC_SAVE_AREA+64(32),SP_R12(%r15)
+ j 1f
+0: mvc __LC_SAVE_AREA+32(32),SP_R12(%r15)
+1: lmg %r0,%r11,SP_R0(%r15)
lg %r15,SP_R15(%r15)
-0: la %r12,__LC_RETURN_PSW
+2: la %r12,__LC_RETURN_PSW
br %r14
cleanup_sysc_leave_insn:
#ifdef CONFIG_VIRT_CPU_ACCOUNTING
@@ -927,6 +956,36 @@ cleanup_sysc_leave_insn:
#endif
.quad sysc_leave + 12
+cleanup_io_return:
+ mvc __LC_RETURN_PSW(8),0(%r12)
+ mvc __LC_RETURN_PSW+8(8),BASED(cleanup_table_io_work_loop)
+ la %r12,__LC_RETURN_PSW
+ br %r14
+
+cleanup_io_leave:
+ clc 8(8,%r12),BASED(cleanup_io_leave_insn)
+ je 2f
+#ifdef CONFIG_VIRT_CPU_ACCOUNTING
+ mvc __LC_EXIT_TIMER(8),__LC_ASYNC_ENTER_TIMER
+ clc 8(8,%r12),BASED(cleanup_io_leave_insn+8)
+ je 2f
+#endif
+ mvc __LC_RETURN_PSW(16),SP_PSW(%r15)
+ cghi %r12,__LC_MCK_OLD_PSW
+ jne 0f
+ mvc __LC_SAVE_AREA+64(32),SP_R12(%r15)
+ j 1f
+0: mvc __LC_SAVE_AREA+32(32),SP_R12(%r15)
+1: lmg %r0,%r11,SP_R0(%r15)
+ lg %r15,SP_R15(%r15)
+2: la %r12,__LC_RETURN_PSW
+ br %r14
+cleanup_io_leave_insn:
+#ifdef CONFIG_VIRT_CPU_ACCOUNTING
+ .quad io_leave + 20
+#endif
+ .quad io_leave + 16
+
/*
* Integer constants
*/
generated by cgit v1.1 at 2024-12-26 19:34:51 +0000