AuxXxilium/linux_dsm_epyc7002
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linux_dsm_epyc7002/arch/s390/kernel/asm-offsets.c
Hendrik Brueckner d0164ee20d s390/kernel: remove save_fpu_regs() parameter and use __LC_CURRENT instead 
All calls to save_fpu_regs() specify the fpu structure of the current task
pointer as parameter.  The task pointer of the current task can also be
retrieved from the CPU lowcore directly.  Remove the parameter definition,
load the __LC_CURRENT task pointer from the CPU lowcore, and rebase the FPU
structure onto the task structure.  Apply the same approach for the
load_fpu_regs() function.

Reviewed-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2015-08-03 10:04:37 +02:00

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/*
* Generate definitions needed by assembly language modules.
* This code generates raw asm output which is post-processed to extract
* and format the required data.
*/
#define ASM_OFFSETS_C
#include <linux/kbuild.h>
#include <linux/kvm_host.h>
#include <linux/sched.h>
#include <asm/idle.h>
#include <asm/vdso.h>
#include <asm/pgtable.h>
/*
* Make sure that the compiler is new enough. We want a compiler that
* is known to work with the "Q" assembler constraint.
*/
#if __GNUC__ < 4 || (__GNUC__ == 4 && __GNUC_MINOR__ < 3)
#error Your compiler is too old; please use version 4.3 or newer
#endif
int main(void)
{
DEFINE(__TASK_thread_info, offsetof(struct task_struct, stack));
DEFINE(__TASK_thread, offsetof(struct task_struct, thread));
DEFINE(__TASK_pid, offsetof(struct task_struct, pid));
BLANK();
DEFINE(__THREAD_ksp, offsetof(struct thread_struct, ksp));
DEFINE(__THREAD_FPU_fpc, offsetof(struct thread_struct, fpu.fpc));
DEFINE(__THREAD_FPU_flags, offsetof(struct thread_struct, fpu.flags));
DEFINE(__THREAD_FPU_regs, offsetof(struct thread_struct, fpu.regs));
DEFINE(__THREAD_per_cause, offsetof(struct thread_struct, per_event.cause));
DEFINE(__THREAD_per_address, offsetof(struct thread_struct, per_event.address));
DEFINE(__THREAD_per_paid, offsetof(struct thread_struct, per_event.paid));
DEFINE(__THREAD_trap_tdb, offsetof(struct thread_struct, trap_tdb));
BLANK();
DEFINE(__TI_task, offsetof(struct thread_info, task));
DEFINE(__TI_flags, offsetof(struct thread_info, flags));
DEFINE(__TI_sysc_table, offsetof(struct thread_info, sys_call_table));
DEFINE(__TI_cpu, offsetof(struct thread_info, cpu));
DEFINE(__TI_precount, offsetof(struct thread_info, preempt_count));
DEFINE(__TI_user_timer, offsetof(struct thread_info, user_timer));
DEFINE(__TI_system_timer, offsetof(struct thread_info, system_timer));
DEFINE(__TI_last_break, offsetof(struct thread_info, last_break));
BLANK();
DEFINE(__PT_ARGS, offsetof(struct pt_regs, args));
DEFINE(__PT_PSW, offsetof(struct pt_regs, psw));
DEFINE(__PT_GPRS, offsetof(struct pt_regs, gprs));
DEFINE(__PT_ORIG_GPR2, offsetof(struct pt_regs, orig_gpr2));
DEFINE(__PT_INT_CODE, offsetof(struct pt_regs, int_code));
DEFINE(__PT_INT_PARM, offsetof(struct pt_regs, int_parm));
DEFINE(__PT_INT_PARM_LONG, offsetof(struct pt_regs, int_parm_long));
DEFINE(__PT_FLAGS, offsetof(struct pt_regs, flags));
DEFINE(__PT_SIZE, sizeof(struct pt_regs));
BLANK();
DEFINE(__SF_BACKCHAIN, offsetof(struct stack_frame, back_chain));
DEFINE(__SF_GPRS, offsetof(struct stack_frame, gprs));
DEFINE(__SF_EMPTY, offsetof(struct stack_frame, empty1));
BLANK();
/* timeval/timezone offsets for use by vdso */
DEFINE(__VDSO_UPD_COUNT, offsetof(struct vdso_data, tb_update_count));
DEFINE(__VDSO_XTIME_STAMP, offsetof(struct vdso_data, xtime_tod_stamp));
DEFINE(__VDSO_XTIME_SEC, offsetof(struct vdso_data, xtime_clock_sec));
DEFINE(__VDSO_XTIME_NSEC, offsetof(struct vdso_data, xtime_clock_nsec));
DEFINE(__VDSO_XTIME_CRS_SEC, offsetof(struct vdso_data, xtime_coarse_sec));
DEFINE(__VDSO_XTIME_CRS_NSEC, offsetof(struct vdso_data, xtime_coarse_nsec));
DEFINE(__VDSO_WTOM_SEC, offsetof(struct vdso_data, wtom_clock_sec));
DEFINE(__VDSO_WTOM_NSEC, offsetof(struct vdso_data, wtom_clock_nsec));
DEFINE(__VDSO_WTOM_CRS_SEC, offsetof(struct vdso_data, wtom_coarse_sec));
DEFINE(__VDSO_WTOM_CRS_NSEC, offsetof(struct vdso_data, wtom_coarse_nsec));
DEFINE(__VDSO_TIMEZONE, offsetof(struct vdso_data, tz_minuteswest));
DEFINE(__VDSO_ECTG_OK, offsetof(struct vdso_data, ectg_available));
DEFINE(__VDSO_TK_MULT, offsetof(struct vdso_data, tk_mult));
DEFINE(__VDSO_TK_SHIFT, offsetof(struct vdso_data, tk_shift));
DEFINE(__VDSO_ECTG_BASE, offsetof(struct vdso_per_cpu_data, ectg_timer_base));
DEFINE(__VDSO_ECTG_USER, offsetof(struct vdso_per_cpu_data, ectg_user_time));
/* constants used by the vdso */
DEFINE(__CLOCK_REALTIME, CLOCK_REALTIME);
DEFINE(__CLOCK_MONOTONIC, CLOCK_MONOTONIC);
DEFINE(__CLOCK_REALTIME_COARSE, CLOCK_REALTIME_COARSE);
DEFINE(__CLOCK_MONOTONIC_COARSE, CLOCK_MONOTONIC_COARSE);
DEFINE(__CLOCK_THREAD_CPUTIME_ID, CLOCK_THREAD_CPUTIME_ID);
DEFINE(__CLOCK_REALTIME_RES, MONOTONIC_RES_NSEC);
DEFINE(__CLOCK_COARSE_RES, LOW_RES_NSEC);
BLANK();
/* idle data offsets */
DEFINE(__CLOCK_IDLE_ENTER, offsetof(struct s390_idle_data, clock_idle_enter));
DEFINE(__CLOCK_IDLE_EXIT, offsetof(struct s390_idle_data, clock_idle_exit));
DEFINE(__TIMER_IDLE_ENTER, offsetof(struct s390_idle_data, timer_idle_enter));
DEFINE(__TIMER_IDLE_EXIT, offsetof(struct s390_idle_data, timer_idle_exit));
/* lowcore offsets */
DEFINE(__LC_EXT_PARAMS, offsetof(struct _lowcore, ext_params));
DEFINE(__LC_EXT_CPU_ADDR, offsetof(struct _lowcore, ext_cpu_addr));
DEFINE(__LC_EXT_INT_CODE, offsetof(struct _lowcore, ext_int_code));
DEFINE(__LC_SVC_ILC, offsetof(struct _lowcore, svc_ilc));
DEFINE(__LC_SVC_INT_CODE, offsetof(struct _lowcore, svc_code));
DEFINE(__LC_PGM_ILC, offsetof(struct _lowcore, pgm_ilc));
DEFINE(__LC_PGM_INT_CODE, offsetof(struct _lowcore, pgm_code));
DEFINE(__LC_TRANS_EXC_CODE, offsetof(struct _lowcore, trans_exc_code));
DEFINE(__LC_MON_CLASS_NR, offsetof(struct _lowcore, mon_class_num));
DEFINE(__LC_PER_CODE, offsetof(struct _lowcore, per_code));
DEFINE(__LC_PER_ATMID, offsetof(struct _lowcore, per_atmid));
DEFINE(__LC_PER_ADDRESS, offsetof(struct _lowcore, per_address));
DEFINE(__LC_EXC_ACCESS_ID, offsetof(struct _lowcore, exc_access_id));
DEFINE(__LC_PER_ACCESS_ID, offsetof(struct _lowcore, per_access_id));
DEFINE(__LC_OP_ACCESS_ID, offsetof(struct _lowcore, op_access_id));
DEFINE(__LC_AR_MODE_ID, offsetof(struct _lowcore, ar_mode_id));
DEFINE(__LC_MON_CODE, offsetof(struct _lowcore, monitor_code));
DEFINE(__LC_SUBCHANNEL_ID, offsetof(struct _lowcore, subchannel_id));
DEFINE(__LC_SUBCHANNEL_NR, offsetof(struct _lowcore, subchannel_nr));
DEFINE(__LC_IO_INT_PARM, offsetof(struct _lowcore, io_int_parm));
DEFINE(__LC_IO_INT_WORD, offsetof(struct _lowcore, io_int_word));
DEFINE(__LC_STFL_FAC_LIST, offsetof(struct _lowcore, stfl_fac_list));
DEFINE(__LC_MCCK_CODE, offsetof(struct _lowcore, mcck_interruption_code));
DEFINE(__LC_MCCK_EXT_DAM_CODE, offsetof(struct _lowcore, external_damage_code));
DEFINE(__LC_RST_OLD_PSW, offsetof(struct _lowcore, restart_old_psw));
DEFINE(__LC_EXT_OLD_PSW, offsetof(struct _lowcore, external_old_psw));
DEFINE(__LC_SVC_OLD_PSW, offsetof(struct _lowcore, svc_old_psw));
DEFINE(__LC_PGM_OLD_PSW, offsetof(struct _lowcore, program_old_psw));
DEFINE(__LC_MCK_OLD_PSW, offsetof(struct _lowcore, mcck_old_psw));
DEFINE(__LC_IO_OLD_PSW, offsetof(struct _lowcore, io_old_psw));
DEFINE(__LC_RST_NEW_PSW, offsetof(struct _lowcore, restart_psw));
DEFINE(__LC_EXT_NEW_PSW, offsetof(struct _lowcore, external_new_psw));
DEFINE(__LC_SVC_NEW_PSW, offsetof(struct _lowcore, svc_new_psw));
DEFINE(__LC_PGM_NEW_PSW, offsetof(struct _lowcore, program_new_psw));
DEFINE(__LC_MCK_NEW_PSW, offsetof(struct _lowcore, mcck_new_psw));
DEFINE(__LC_IO_NEW_PSW, offsetof(struct _lowcore, io_new_psw));
BLANK();
DEFINE(__LC_SAVE_AREA_SYNC, offsetof(struct _lowcore, save_area_sync));
DEFINE(__LC_SAVE_AREA_ASYNC, offsetof(struct _lowcore, save_area_async));
DEFINE(__LC_SAVE_AREA_RESTART, offsetof(struct _lowcore, save_area_restart));
DEFINE(__LC_CPU_FLAGS, offsetof(struct _lowcore, cpu_flags));
DEFINE(__LC_RETURN_PSW, offsetof(struct _lowcore, return_psw));
DEFINE(__LC_RETURN_MCCK_PSW, offsetof(struct _lowcore, return_mcck_psw));
DEFINE(__LC_SYNC_ENTER_TIMER, offsetof(struct _lowcore, sync_enter_timer));
DEFINE(__LC_ASYNC_ENTER_TIMER, offsetof(struct _lowcore, async_enter_timer));
DEFINE(__LC_MCCK_ENTER_TIMER, offsetof(struct _lowcore, mcck_enter_timer));
DEFINE(__LC_EXIT_TIMER, offsetof(struct _lowcore, exit_timer));
DEFINE(__LC_USER_TIMER, offsetof(struct _lowcore, user_timer));
DEFINE(__LC_SYSTEM_TIMER, offsetof(struct _lowcore, system_timer));
DEFINE(__LC_STEAL_TIMER, offsetof(struct _lowcore, steal_timer));
DEFINE(__LC_LAST_UPDATE_TIMER, offsetof(struct _lowcore, last_update_timer));
DEFINE(__LC_LAST_UPDATE_CLOCK, offsetof(struct _lowcore, last_update_clock));
DEFINE(__LC_CURRENT, offsetof(struct _lowcore, current_task));
DEFINE(__LC_CURRENT_PID, offsetof(struct _lowcore, current_pid));
DEFINE(__LC_THREAD_INFO, offsetof(struct _lowcore, thread_info));
DEFINE(__LC_KERNEL_STACK, offsetof(struct _lowcore, kernel_stack));
DEFINE(__LC_ASYNC_STACK, offsetof(struct _lowcore, async_stack));
DEFINE(__LC_PANIC_STACK, offsetof(struct _lowcore, panic_stack));
DEFINE(__LC_RESTART_STACK, offsetof(struct _lowcore, restart_stack));
DEFINE(__LC_RESTART_FN, offsetof(struct _lowcore, restart_fn));
DEFINE(__LC_RESTART_DATA, offsetof(struct _lowcore, restart_data));
DEFINE(__LC_RESTART_SOURCE, offsetof(struct _lowcore, restart_source));
DEFINE(__LC_KERNEL_ASCE, offsetof(struct _lowcore, kernel_asce));
DEFINE(__LC_USER_ASCE, offsetof(struct _lowcore, user_asce));
DEFINE(__LC_INT_CLOCK, offsetof(struct _lowcore, int_clock));
DEFINE(__LC_MCCK_CLOCK, offsetof(struct _lowcore, mcck_clock));
DEFINE(__LC_MACHINE_FLAGS, offsetof(struct _lowcore, machine_flags));
DEFINE(__LC_DUMP_REIPL, offsetof(struct _lowcore, ipib));
BLANK();
DEFINE(__LC_CPU_TIMER_SAVE_AREA, offsetof(struct _lowcore, cpu_timer_save_area));
DEFINE(__LC_CLOCK_COMP_SAVE_AREA, offsetof(struct _lowcore, clock_comp_save_area));
DEFINE(__LC_PSW_SAVE_AREA, offsetof(struct _lowcore, psw_save_area));
DEFINE(__LC_PREFIX_SAVE_AREA, offsetof(struct _lowcore, prefixreg_save_area));
DEFINE(__LC_AREGS_SAVE_AREA, offsetof(struct _lowcore, access_regs_save_area));
DEFINE(__LC_FPREGS_SAVE_AREA, offsetof(struct _lowcore, floating_pt_save_area));
DEFINE(__LC_GPREGS_SAVE_AREA, offsetof(struct _lowcore, gpregs_save_area));
DEFINE(__LC_CREGS_SAVE_AREA, offsetof(struct _lowcore, cregs_save_area));
DEFINE(__LC_DATA_EXC_CODE, offsetof(struct _lowcore, data_exc_code));
DEFINE(__LC_MCCK_FAIL_STOR_ADDR, offsetof(struct _lowcore, failing_storage_address));
DEFINE(__LC_VX_SAVE_AREA_ADDR, offsetof(struct _lowcore, vector_save_area_addr));
DEFINE(__LC_EXT_PARAMS2, offsetof(struct _lowcore, ext_params2));
DEFINE(SAVE_AREA_BASE, offsetof(struct _lowcore, floating_pt_save_area));
DEFINE(__LC_PASTE, offsetof(struct _lowcore, paste));
DEFINE(__LC_FP_CREG_SAVE_AREA, offsetof(struct _lowcore, fpt_creg_save_area));
DEFINE(__LC_LAST_BREAK, offsetof(struct _lowcore, breaking_event_addr));
DEFINE(__LC_VDSO_PER_CPU, offsetof(struct _lowcore, vdso_per_cpu_data));
DEFINE(__LC_GMAP, offsetof(struct _lowcore, gmap));
DEFINE(__LC_PGM_TDB, offsetof(struct _lowcore, pgm_tdb));
DEFINE(__GMAP_ASCE, offsetof(struct gmap, asce));
DEFINE(__SIE_PROG0C, offsetof(struct kvm_s390_sie_block, prog0c));
DEFINE(__SIE_PROG20, offsetof(struct kvm_s390_sie_block, prog20));
return 0;
}
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