mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-23 17:30:02 +00:00
e0ffcf3fe1
Add a union which describes how the empty stack slots are being used
by kvm and perf. This should help to avoid another bug like the one
which was fixed with commit c9bfb460c3 ("s390/perf: obtain sie_block
from the right address").
Reviewed-by: Nico Boehr <nrb@linux.ibm.com>
Tested-by: Nico Boehr <nrb@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
181 lines
7.9 KiB
C
181 lines
7.9 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
/*
|
|
* 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 <linux/purgatory.h>
|
|
#include <linux/pgtable.h>
|
|
#include <asm/idle.h>
|
|
#include <asm/gmap.h>
|
|
#include <asm/stacktrace.h>
|
|
|
|
int main(void)
|
|
{
|
|
/* task struct offsets */
|
|
OFFSET(__TASK_stack, task_struct, stack);
|
|
OFFSET(__TASK_thread, task_struct, thread);
|
|
OFFSET(__TASK_pid, task_struct, pid);
|
|
BLANK();
|
|
/* thread struct offsets */
|
|
OFFSET(__THREAD_ksp, thread_struct, ksp);
|
|
BLANK();
|
|
/* thread info offsets */
|
|
OFFSET(__TI_flags, task_struct, thread_info.flags);
|
|
BLANK();
|
|
/* pt_regs offsets */
|
|
OFFSET(__PT_PSW, pt_regs, psw);
|
|
OFFSET(__PT_GPRS, pt_regs, gprs);
|
|
OFFSET(__PT_R0, pt_regs, gprs[0]);
|
|
OFFSET(__PT_R1, pt_regs, gprs[1]);
|
|
OFFSET(__PT_R2, pt_regs, gprs[2]);
|
|
OFFSET(__PT_R3, pt_regs, gprs[3]);
|
|
OFFSET(__PT_R4, pt_regs, gprs[4]);
|
|
OFFSET(__PT_R5, pt_regs, gprs[5]);
|
|
OFFSET(__PT_R6, pt_regs, gprs[6]);
|
|
OFFSET(__PT_R7, pt_regs, gprs[7]);
|
|
OFFSET(__PT_R8, pt_regs, gprs[8]);
|
|
OFFSET(__PT_R9, pt_regs, gprs[9]);
|
|
OFFSET(__PT_R10, pt_regs, gprs[10]);
|
|
OFFSET(__PT_R11, pt_regs, gprs[11]);
|
|
OFFSET(__PT_R12, pt_regs, gprs[12]);
|
|
OFFSET(__PT_R13, pt_regs, gprs[13]);
|
|
OFFSET(__PT_R14, pt_regs, gprs[14]);
|
|
OFFSET(__PT_R15, pt_regs, gprs[15]);
|
|
OFFSET(__PT_ORIG_GPR2, pt_regs, orig_gpr2);
|
|
OFFSET(__PT_FLAGS, pt_regs, flags);
|
|
OFFSET(__PT_CR1, pt_regs, cr1);
|
|
OFFSET(__PT_LAST_BREAK, pt_regs, last_break);
|
|
DEFINE(__PT_SIZE, sizeof(struct pt_regs));
|
|
BLANK();
|
|
/* stack_frame offsets */
|
|
OFFSET(__SF_BACKCHAIN, stack_frame, back_chain);
|
|
OFFSET(__SF_GPRS, stack_frame, gprs);
|
|
OFFSET(__SF_EMPTY, stack_frame, empty[0]);
|
|
OFFSET(__SF_SIE_CONTROL, stack_frame, sie_control_block);
|
|
OFFSET(__SF_SIE_SAVEAREA, stack_frame, sie_savearea);
|
|
OFFSET(__SF_SIE_REASON, stack_frame, sie_reason);
|
|
OFFSET(__SF_SIE_FLAGS, stack_frame, sie_flags);
|
|
DEFINE(STACK_FRAME_OVERHEAD, sizeof(struct stack_frame));
|
|
BLANK();
|
|
/* idle data offsets */
|
|
OFFSET(__CLOCK_IDLE_ENTER, s390_idle_data, clock_idle_enter);
|
|
OFFSET(__TIMER_IDLE_ENTER, s390_idle_data, timer_idle_enter);
|
|
OFFSET(__MT_CYCLES_ENTER, s390_idle_data, mt_cycles_enter);
|
|
BLANK();
|
|
/* hardware defined lowcore locations 0x000 - 0x1ff */
|
|
OFFSET(__LC_EXT_PARAMS, lowcore, ext_params);
|
|
OFFSET(__LC_EXT_CPU_ADDR, lowcore, ext_cpu_addr);
|
|
OFFSET(__LC_EXT_INT_CODE, lowcore, ext_int_code);
|
|
OFFSET(__LC_PGM_ILC, lowcore, pgm_ilc);
|
|
OFFSET(__LC_PGM_INT_CODE, lowcore, pgm_code);
|
|
OFFSET(__LC_DATA_EXC_CODE, lowcore, data_exc_code);
|
|
OFFSET(__LC_MON_CLASS_NR, lowcore, mon_class_num);
|
|
OFFSET(__LC_PER_CODE, lowcore, per_code);
|
|
OFFSET(__LC_PER_ATMID, lowcore, per_atmid);
|
|
OFFSET(__LC_PER_ADDRESS, lowcore, per_address);
|
|
OFFSET(__LC_EXC_ACCESS_ID, lowcore, exc_access_id);
|
|
OFFSET(__LC_PER_ACCESS_ID, lowcore, per_access_id);
|
|
OFFSET(__LC_OP_ACCESS_ID, lowcore, op_access_id);
|
|
OFFSET(__LC_AR_MODE_ID, lowcore, ar_mode_id);
|
|
OFFSET(__LC_TRANS_EXC_CODE, lowcore, trans_exc_code);
|
|
OFFSET(__LC_MON_CODE, lowcore, monitor_code);
|
|
OFFSET(__LC_SUBCHANNEL_ID, lowcore, subchannel_id);
|
|
OFFSET(__LC_SUBCHANNEL_NR, lowcore, subchannel_nr);
|
|
OFFSET(__LC_IO_INT_PARM, lowcore, io_int_parm);
|
|
OFFSET(__LC_IO_INT_WORD, lowcore, io_int_word);
|
|
OFFSET(__LC_MCCK_CODE, lowcore, mcck_interruption_code);
|
|
OFFSET(__LC_EXT_DAMAGE_CODE, lowcore, external_damage_code);
|
|
OFFSET(__LC_MCCK_FAIL_STOR_ADDR, lowcore, failing_storage_address);
|
|
OFFSET(__LC_PGM_LAST_BREAK, lowcore, pgm_last_break);
|
|
OFFSET(__LC_RETURN_LPSWE, lowcore, return_lpswe);
|
|
OFFSET(__LC_RETURN_MCCK_LPSWE, lowcore, return_mcck_lpswe);
|
|
OFFSET(__LC_RST_OLD_PSW, lowcore, restart_old_psw);
|
|
OFFSET(__LC_EXT_OLD_PSW, lowcore, external_old_psw);
|
|
OFFSET(__LC_SVC_OLD_PSW, lowcore, svc_old_psw);
|
|
OFFSET(__LC_PGM_OLD_PSW, lowcore, program_old_psw);
|
|
OFFSET(__LC_MCK_OLD_PSW, lowcore, mcck_old_psw);
|
|
OFFSET(__LC_IO_OLD_PSW, lowcore, io_old_psw);
|
|
OFFSET(__LC_RST_NEW_PSW, lowcore, restart_psw);
|
|
OFFSET(__LC_EXT_NEW_PSW, lowcore, external_new_psw);
|
|
OFFSET(__LC_SVC_NEW_PSW, lowcore, svc_new_psw);
|
|
OFFSET(__LC_PGM_NEW_PSW, lowcore, program_new_psw);
|
|
OFFSET(__LC_MCK_NEW_PSW, lowcore, mcck_new_psw);
|
|
OFFSET(__LC_IO_NEW_PSW, lowcore, io_new_psw);
|
|
/* software defined lowcore locations 0x200 - 0xdff*/
|
|
OFFSET(__LC_SAVE_AREA_SYNC, lowcore, save_area_sync);
|
|
OFFSET(__LC_SAVE_AREA_ASYNC, lowcore, save_area_async);
|
|
OFFSET(__LC_SAVE_AREA_RESTART, lowcore, save_area_restart);
|
|
OFFSET(__LC_CPU_FLAGS, lowcore, cpu_flags);
|
|
OFFSET(__LC_RETURN_PSW, lowcore, return_psw);
|
|
OFFSET(__LC_RETURN_MCCK_PSW, lowcore, return_mcck_psw);
|
|
OFFSET(__LC_SYS_ENTER_TIMER, lowcore, sys_enter_timer);
|
|
OFFSET(__LC_MCCK_ENTER_TIMER, lowcore, mcck_enter_timer);
|
|
OFFSET(__LC_EXIT_TIMER, lowcore, exit_timer);
|
|
OFFSET(__LC_LAST_UPDATE_TIMER, lowcore, last_update_timer);
|
|
OFFSET(__LC_LAST_UPDATE_CLOCK, lowcore, last_update_clock);
|
|
OFFSET(__LC_INT_CLOCK, lowcore, int_clock);
|
|
OFFSET(__LC_MCCK_CLOCK, lowcore, mcck_clock);
|
|
OFFSET(__LC_BOOT_CLOCK, lowcore, boot_clock);
|
|
OFFSET(__LC_CURRENT, lowcore, current_task);
|
|
OFFSET(__LC_KERNEL_STACK, lowcore, kernel_stack);
|
|
OFFSET(__LC_ASYNC_STACK, lowcore, async_stack);
|
|
OFFSET(__LC_NODAT_STACK, lowcore, nodat_stack);
|
|
OFFSET(__LC_RESTART_STACK, lowcore, restart_stack);
|
|
OFFSET(__LC_MCCK_STACK, lowcore, mcck_stack);
|
|
OFFSET(__LC_RESTART_FN, lowcore, restart_fn);
|
|
OFFSET(__LC_RESTART_DATA, lowcore, restart_data);
|
|
OFFSET(__LC_RESTART_SOURCE, lowcore, restart_source);
|
|
OFFSET(__LC_RESTART_FLAGS, lowcore, restart_flags);
|
|
OFFSET(__LC_KERNEL_ASCE, lowcore, kernel_asce);
|
|
OFFSET(__LC_USER_ASCE, lowcore, user_asce);
|
|
OFFSET(__LC_LPP, lowcore, lpp);
|
|
OFFSET(__LC_CURRENT_PID, lowcore, current_pid);
|
|
OFFSET(__LC_GMAP, lowcore, gmap);
|
|
OFFSET(__LC_LAST_BREAK, lowcore, last_break);
|
|
/* software defined ABI-relevant lowcore locations 0xe00 - 0xe20 */
|
|
OFFSET(__LC_DUMP_REIPL, lowcore, ipib);
|
|
OFFSET(__LC_VMCORE_INFO, lowcore, vmcore_info);
|
|
OFFSET(__LC_OS_INFO, lowcore, os_info);
|
|
/* hardware defined lowcore locations 0x1000 - 0x18ff */
|
|
OFFSET(__LC_MCESAD, lowcore, mcesad);
|
|
OFFSET(__LC_EXT_PARAMS2, lowcore, ext_params2);
|
|
OFFSET(__LC_FPREGS_SAVE_AREA, lowcore, floating_pt_save_area);
|
|
OFFSET(__LC_GPREGS_SAVE_AREA, lowcore, gpregs_save_area);
|
|
OFFSET(__LC_PSW_SAVE_AREA, lowcore, psw_save_area);
|
|
OFFSET(__LC_PREFIX_SAVE_AREA, lowcore, prefixreg_save_area);
|
|
OFFSET(__LC_FP_CREG_SAVE_AREA, lowcore, fpt_creg_save_area);
|
|
OFFSET(__LC_TOD_PROGREG_SAVE_AREA, lowcore, tod_progreg_save_area);
|
|
OFFSET(__LC_CPU_TIMER_SAVE_AREA, lowcore, cpu_timer_save_area);
|
|
OFFSET(__LC_CLOCK_COMP_SAVE_AREA, lowcore, clock_comp_save_area);
|
|
OFFSET(__LC_LAST_BREAK_SAVE_AREA, lowcore, last_break_save_area);
|
|
OFFSET(__LC_AREGS_SAVE_AREA, lowcore, access_regs_save_area);
|
|
OFFSET(__LC_CREGS_SAVE_AREA, lowcore, cregs_save_area);
|
|
OFFSET(__LC_PGM_TDB, lowcore, pgm_tdb);
|
|
BLANK();
|
|
/* gmap/sie offsets */
|
|
OFFSET(__GMAP_ASCE, gmap, asce);
|
|
OFFSET(__SIE_PROG0C, kvm_s390_sie_block, prog0c);
|
|
OFFSET(__SIE_PROG20, kvm_s390_sie_block, prog20);
|
|
/* kexec_sha_region */
|
|
OFFSET(__KEXEC_SHA_REGION_START, kexec_sha_region, start);
|
|
OFFSET(__KEXEC_SHA_REGION_LEN, kexec_sha_region, len);
|
|
DEFINE(__KEXEC_SHA_REGION_SIZE, sizeof(struct kexec_sha_region));
|
|
/* sizeof kernel parameter area */
|
|
DEFINE(__PARMAREA_SIZE, sizeof(struct parmarea));
|
|
/* kernel parameter area offsets */
|
|
DEFINE(IPL_DEVICE, PARMAREA + offsetof(struct parmarea, ipl_device));
|
|
DEFINE(INITRD_START, PARMAREA + offsetof(struct parmarea, initrd_start));
|
|
DEFINE(INITRD_SIZE, PARMAREA + offsetof(struct parmarea, initrd_size));
|
|
DEFINE(OLDMEM_BASE, PARMAREA + offsetof(struct parmarea, oldmem_base));
|
|
DEFINE(OLDMEM_SIZE, PARMAREA + offsetof(struct parmarea, oldmem_size));
|
|
DEFINE(COMMAND_LINE, PARMAREA + offsetof(struct parmarea, command_line));
|
|
DEFINE(MAX_COMMAND_LINE_SIZE, PARMAREA + offsetof(struct parmarea, max_command_line_size));
|
|
return 0;
|
|
}
|