From c5328901aa1db134325607d65527742d8be07f7d Mon Sep 17 00:00:00 2001 From: Martin Schwidefsky Date: Tue, 27 Dec 2011 11:27:15 +0100 Subject: [S390] entry[64].S improvements Another round of cleanup for entry[64].S, in particular the program check handler looks more reasonable now. The code size for the 31 bit kernel has been reduced by 616 byte and by 528 byte for the 64 bit version. Even better the code is a bit faster as well. Signed-off-by: Martin Schwidefsky --- arch/s390/include/asm/lowcore.h | 142 +++++++++++++++++++++------------------- 1 file changed, 76 insertions(+), 66 deletions(-) (limited to 'arch/s390/include/asm') diff --git a/arch/s390/include/asm/lowcore.h b/arch/s390/include/asm/lowcore.h index 3b97964e0e96..707f2306725b 100644 --- a/arch/s390/include/asm/lowcore.h +++ b/arch/s390/include/asm/lowcore.h @@ -97,47 +97,52 @@ struct _lowcore { __u32 gpregs_save_area[16]; /* 0x0180 */ __u32 cregs_save_area[16]; /* 0x01c0 */ + /* Save areas. */ + __u32 save_area_sync[8]; /* 0x0200 */ + __u32 save_area_async[8]; /* 0x0220 */ + __u32 save_area_restart[1]; /* 0x0240 */ + __u8 pad_0x0244[0x0248-0x0244]; /* 0x0244 */ + /* Return psws. */ - __u32 save_area[16]; /* 0x0200 */ - psw_t return_psw; /* 0x0240 */ - psw_t return_mcck_psw; /* 0x0248 */ + psw_t return_psw; /* 0x0248 */ + psw_t return_mcck_psw; /* 0x0250 */ /* CPU time accounting values */ - __u64 sync_enter_timer; /* 0x0250 */ - __u64 async_enter_timer; /* 0x0258 */ - __u64 mcck_enter_timer; /* 0x0260 */ - __u64 exit_timer; /* 0x0268 */ - __u64 user_timer; /* 0x0270 */ - __u64 system_timer; /* 0x0278 */ - __u64 steal_timer; /* 0x0280 */ - __u64 last_update_timer; /* 0x0288 */ - __u64 last_update_clock; /* 0x0290 */ + __u64 sync_enter_timer; /* 0x0258 */ + __u64 async_enter_timer; /* 0x0260 */ + __u64 mcck_enter_timer; /* 0x0268 */ + __u64 exit_timer; /* 0x0270 */ + __u64 user_timer; /* 0x0278 */ + __u64 system_timer; /* 0x0280 */ + __u64 steal_timer; /* 0x0288 */ + __u64 last_update_timer; /* 0x0290 */ + __u64 last_update_clock; /* 0x0298 */ /* Current process. */ - __u32 current_task; /* 0x0298 */ - __u32 thread_info; /* 0x029c */ - __u32 kernel_stack; /* 0x02a0 */ + __u32 current_task; /* 0x02a0 */ + __u32 thread_info; /* 0x02a4 */ + __u32 kernel_stack; /* 0x02a8 */ /* Interrupt and panic stack. */ - __u32 async_stack; /* 0x02a4 */ - __u32 panic_stack; /* 0x02a8 */ + __u32 async_stack; /* 0x02ac */ + __u32 panic_stack; /* 0x02b0 */ /* Address space pointer. */ - __u32 kernel_asce; /* 0x02ac */ - __u32 user_asce; /* 0x02b0 */ - __u32 current_pid; /* 0x02b4 */ + __u32 kernel_asce; /* 0x02b4 */ + __u32 user_asce; /* 0x02b8 */ + __u32 current_pid; /* 0x02bc */ /* SMP info area */ - __u32 cpu_nr; /* 0x02b8 */ - __u32 softirq_pending; /* 0x02bc */ - __u32 percpu_offset; /* 0x02c0 */ - __u32 ext_call_fast; /* 0x02c4 */ - __u64 int_clock; /* 0x02c8 */ - __u64 mcck_clock; /* 0x02d0 */ - __u64 clock_comparator; /* 0x02d8 */ - __u32 machine_flags; /* 0x02e0 */ - __u32 ftrace_func; /* 0x02e4 */ - __u8 pad_0x02e8[0x0300-0x02e8]; /* 0x02e8 */ + __u32 cpu_nr; /* 0x02c0 */ + __u32 softirq_pending; /* 0x02c4 */ + __u32 percpu_offset; /* 0x02c8 */ + __u32 ext_call_fast; /* 0x02cc */ + __u64 int_clock; /* 0x02d0 */ + __u64 mcck_clock; /* 0x02d8 */ + __u64 clock_comparator; /* 0x02e0 */ + __u32 machine_flags; /* 0x02e8 */ + __u32 ftrace_func; /* 0x02ec */ + __u8 pad_0x02f8[0x0300-0x02f0]; /* 0x02f0 */ /* Interrupt response block */ __u8 irb[64]; /* 0x0300 */ @@ -229,57 +234,62 @@ struct _lowcore { psw_t mcck_new_psw; /* 0x01e0 */ psw_t io_new_psw; /* 0x01f0 */ - /* Entry/exit save area & return psws. */ - __u64 save_area[16]; /* 0x0200 */ - psw_t return_psw; /* 0x0280 */ - psw_t return_mcck_psw; /* 0x0290 */ + /* Save areas. */ + __u64 save_area_sync[8]; /* 0x0200 */ + __u64 save_area_async[8]; /* 0x0240 */ + __u64 save_area_restart[1]; /* 0x0280 */ + __u8 pad_0x0288[0x0290-0x0288]; /* 0x0288 */ + + /* Return psws. */ + psw_t return_psw; /* 0x0290 */ + psw_t return_mcck_psw; /* 0x02a0 */ /* CPU accounting and timing values. */ - __u64 sync_enter_timer; /* 0x02a0 */ - __u64 async_enter_timer; /* 0x02a8 */ - __u64 mcck_enter_timer; /* 0x02b0 */ - __u64 exit_timer; /* 0x02b8 */ - __u64 user_timer; /* 0x02c0 */ - __u64 system_timer; /* 0x02c8 */ - __u64 steal_timer; /* 0x02d0 */ - __u64 last_update_timer; /* 0x02d8 */ - __u64 last_update_clock; /* 0x02e0 */ + __u64 sync_enter_timer; /* 0x02b0 */ + __u64 async_enter_timer; /* 0x02b8 */ + __u64 mcck_enter_timer; /* 0x02c0 */ + __u64 exit_timer; /* 0x02c8 */ + __u64 user_timer; /* 0x02d0 */ + __u64 system_timer; /* 0x02d8 */ + __u64 steal_timer; /* 0x02e0 */ + __u64 last_update_timer; /* 0x02e8 */ + __u64 last_update_clock; /* 0x02f0 */ /* Current process. */ - __u64 current_task; /* 0x02e8 */ - __u64 thread_info; /* 0x02f0 */ - __u64 kernel_stack; /* 0x02f8 */ + __u64 current_task; /* 0x02f8 */ + __u64 thread_info; /* 0x0300 */ + __u64 kernel_stack; /* 0x0308 */ /* Interrupt and panic stack. */ - __u64 async_stack; /* 0x0300 */ - __u64 panic_stack; /* 0x0308 */ + __u64 async_stack; /* 0x0310 */ + __u64 panic_stack; /* 0x0318 */ /* Address space pointer. */ - __u64 kernel_asce; /* 0x0310 */ - __u64 user_asce; /* 0x0318 */ - __u64 current_pid; /* 0x0320 */ + __u64 kernel_asce; /* 0x0320 */ + __u64 user_asce; /* 0x0328 */ + __u64 current_pid; /* 0x0330 */ /* SMP info area */ - __u32 cpu_nr; /* 0x0328 */ - __u32 softirq_pending; /* 0x032c */ - __u64 percpu_offset; /* 0x0330 */ - __u64 ext_call_fast; /* 0x0338 */ - __u64 int_clock; /* 0x0340 */ - __u64 mcck_clock; /* 0x0348 */ - __u64 clock_comparator; /* 0x0350 */ - __u64 vdso_per_cpu_data; /* 0x0358 */ - __u64 machine_flags; /* 0x0360 */ - __u64 ftrace_func; /* 0x0368 */ - __u64 gmap; /* 0x0370 */ - __u8 pad_0x0378[0x0380-0x0378]; /* 0x0378 */ + __u32 cpu_nr; /* 0x0338 */ + __u32 softirq_pending; /* 0x033c */ + __u64 percpu_offset; /* 0x0340 */ + __u64 ext_call_fast; /* 0x0348 */ + __u64 int_clock; /* 0x0350 */ + __u64 mcck_clock; /* 0x0358 */ + __u64 clock_comparator; /* 0x0360 */ + __u64 vdso_per_cpu_data; /* 0x0368 */ + __u64 machine_flags; /* 0x0370 */ + __u64 ftrace_func; /* 0x0378 */ + __u64 gmap; /* 0x0380 */ + __u8 pad_0x0388[0x0400-0x0388]; /* 0x0388 */ /* Interrupt response block. */ - __u8 irb[64]; /* 0x0380 */ + __u8 irb[64]; /* 0x0400 */ /* Per cpu primary space access list */ - __u32 paste[16]; /* 0x03c0 */ + __u32 paste[16]; /* 0x0440 */ - __u8 pad_0x0400[0x0e00-0x0400]; /* 0x0400 */ + __u8 pad_0x0480[0x0e00-0x0480]; /* 0x0480 */ /* * 0xe00 contains the address of the IPL Parameter Information -- cgit v1.2.3