Commit ef1df130 authored by Thomas Huth's avatar Thomas Huth Committed by Cornelia Huck
Browse files

s390x/migration: migrate CPU state 



This patch provides the cpu save information for dumps and later life
migration and enables migration of the CPU state. The code is based on
earlier work from Christian Borntraeger and Jason Herne.

Signed-off-by: default avatarThomas Huth <thuth@linux.vnet.ibm.com>
Signed-off-by: default avatarDavid Hildenbrand <dahi@linux.vnet.ibm.com>
[provide cpu_post_load()]
Signed-off-by: default avatarJens Freimann <jfrei@linux.vnet.ibm.com>
CC: Andreas Faerber <afaerber@suse.de>
CC: Christian Borntraeger <borntraeger@de.ibm.com>
CC: Jason J. Herne <jjherne@us.ibm.com>
Tested-by: default avatarChristian Borntraeger <borntraeger@de.ibm.com>
[Cornelia Huck: tweaked cpu_post_load() comment]
Signed-off-by: default avatarCornelia Huck <cornelia.huck@de.ibm.com>
parent 71dd7e69

target-s390x/Makefile.objs

+1 −1
Original line number Diff line number Diff line 
obj-y += translate.o helper.o cpu.o interrupt.o

obj-y += int_helper.o fpu_helper.o cc_helper.o mem_helper.o misc_helper.o

obj-y += gdbstub.o

obj-$(CONFIG_SOFTMMU) += ioinst.o arch_dump.o

obj-$(CONFIG_SOFTMMU) += machine.o ioinst.o arch_dump.o

obj-$(CONFIG_KVM) += kvm.o

target-s390x/cpu-qom.h

+4 −0
Original line number Diff line number Diff line
@@ -77,6 +77,10 @@ static inline S390CPU *s390_env_get_cpu(CPUS390XState *env) 


#define ENV_OFFSET offsetof(S390CPU, env)



#ifndef CONFIG_USER_ONLY

extern const struct VMStateDescription vmstate_s390_cpu;

#endif



void s390_cpu_do_interrupt(CPUState *cpu);

bool s390_cpu_exec_interrupt(CPUState *cpu, int int_req);

void s390_cpu_dump_state(CPUState *cpu, FILE *f, fprintf_function cpu_fprintf,

target-s390x/cpu.c

+1 −6
Original line number Diff line number Diff line
@@ -292,11 +292,6 @@ unsigned int s390_cpu_set_state(uint8_t cpu_state, S390CPU *cpu) 
}

#endif



static const VMStateDescription vmstate_s390_cpu = {

    .name = "cpu",

    .unmigratable = 1,

};



static void s390_cpu_class_init(ObjectClass *oc, void *data)

{

    S390CPUClass *scc = S390_CPU_CLASS(oc);
@@ -323,11 +318,11 @@ static void s390_cpu_class_init(ObjectClass *oc, void *data) 
    cc->handle_mmu_fault = s390_cpu_handle_mmu_fault;

#else

    cc->get_phys_page_debug = s390_cpu_get_phys_page_debug;

    cc->vmsd = &vmstate_s390_cpu;

    cc->write_elf64_note = s390_cpu_write_elf64_note;

    cc->write_elf64_qemunote = s390_cpu_write_elf64_qemunote;

    cc->cpu_exec_interrupt = s390_cpu_exec_interrupt;

#endif

    dc->vmsd = &vmstate_s390_cpu;

    cc->gdb_num_core_regs = S390_NUM_CORE_REGS;

    cc->gdb_core_xml_file = "s390x-core64.xml";

}

target-s390x/machine.c

0 → 100644
+76 −0
Original line number Diff line number Diff line 
/*

 * S390x machine definitions and functions

 *

 * Copyright IBM Corp. 2014

 *

 * Authors:

 *   Thomas Huth <thuth@linux.vnet.ibm.com>

 *   Christian Borntraeger <borntraeger@de.ibm.com>

 *   Jason J. Herne <jjherne@us.ibm.com>

 *

 * This work is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published

 * by the Free Software Foundation; either version 2 of the License,

 * or (at your option) any later version.

 */



#include "hw/hw.h"

#include "cpu.h"

#include "sysemu/kvm.h"



static int cpu_post_load(void *opaque, int version_id)

{

    S390CPU *cpu = opaque;



    /*

     * As the cpu state is pushed to kvm via kvm_set_mp_state rather

     * than via cpu_synchronize_state, we need update kvm here.

     */

    if (kvm_enabled()) {

        kvm_s390_set_cpu_state(cpu, cpu->env.cpu_state);

    }



    return 0;

}



const VMStateDescription vmstate_s390_cpu = {

    .name = "cpu",

    .post_load = cpu_post_load,

    .version_id = 1,

    .minimum_version_id = 1,

    .fields      = (VMStateField[]) {

        VMSTATE_UINT64(env.fregs[0].ll, S390CPU),

        VMSTATE_UINT64(env.fregs[1].ll, S390CPU),

        VMSTATE_UINT64(env.fregs[2].ll, S390CPU),

        VMSTATE_UINT64(env.fregs[3].ll, S390CPU),

        VMSTATE_UINT64(env.fregs[4].ll, S390CPU),

        VMSTATE_UINT64(env.fregs[5].ll, S390CPU),

        VMSTATE_UINT64(env.fregs[6].ll, S390CPU),

        VMSTATE_UINT64(env.fregs[7].ll, S390CPU),

        VMSTATE_UINT64(env.fregs[8].ll, S390CPU),

        VMSTATE_UINT64(env.fregs[9].ll, S390CPU),

        VMSTATE_UINT64(env.fregs[10].ll, S390CPU),

        VMSTATE_UINT64(env.fregs[11].ll, S390CPU),

        VMSTATE_UINT64(env.fregs[12].ll, S390CPU),

        VMSTATE_UINT64(env.fregs[13].ll, S390CPU),

        VMSTATE_UINT64(env.fregs[14].ll, S390CPU),

        VMSTATE_UINT64(env.fregs[15].ll, S390CPU),

        VMSTATE_UINT64_ARRAY(env.regs, S390CPU, 16),

        VMSTATE_UINT64(env.psw.mask, S390CPU),

        VMSTATE_UINT64(env.psw.addr, S390CPU),

        VMSTATE_UINT64(env.psa, S390CPU),

        VMSTATE_UINT32(env.fpc, S390CPU),

        VMSTATE_UINT32(env.todpr, S390CPU),

        VMSTATE_UINT64(env.pfault_token, S390CPU),

        VMSTATE_UINT64(env.pfault_compare, S390CPU),

        VMSTATE_UINT64(env.pfault_select, S390CPU),

        VMSTATE_UINT64(env.cputm, S390CPU),

        VMSTATE_UINT64(env.ckc, S390CPU),

        VMSTATE_UINT64(env.gbea, S390CPU),

        VMSTATE_UINT64(env.pp, S390CPU),

        VMSTATE_UINT32_ARRAY(env.aregs, S390CPU, 16),

        VMSTATE_UINT64_ARRAY(env.cregs, S390CPU, 16),

        VMSTATE_UINT8(env.cpu_state, S390CPU),

        VMSTATE_END_OF_LIST()

     },

};