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b073c87517
We need to handle the bpb control on reset and migration. Normally stfle.82 is transparent (and the normal guest part works without hypervisor activity). To prevent any issues we require full host kernel support for this feature. Cc: qemu-stable@nongnu.org Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Message-Id: <20180118085628.40798-3-borntraeger@de.ibm.com> Reviewed-by: Thomas Huth <thuth@redhat.com> Reviewed-by: David Hildenbrand <david@redhat.com> [CH: 'Branch Prediction Blocking' -> 'Branch prediction blocking'] Signed-off-by: Cornelia Huck <cohuck@redhat.com>
251 lines
8.1 KiB
C
251 lines
8.1 KiB
C
/*
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* S390x machine definitions and functions
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*
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* Copyright IBM Corp. 2014
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*
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* Authors:
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* Thomas Huth <thuth@linux.vnet.ibm.com>
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* Christian Borntraeger <borntraeger@de.ibm.com>
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* Jason J. Herne <jjherne@us.ibm.com>
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*
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* This work is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published
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* by the Free Software Foundation; either version 2 of the License,
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* or (at your option) any later version.
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*/
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#include "qemu/osdep.h"
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#include "hw/hw.h"
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#include "cpu.h"
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#include "internal.h"
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#include "kvm_s390x.h"
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#include "sysemu/kvm.h"
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static int cpu_post_load(void *opaque, int version_id)
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{
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S390CPU *cpu = opaque;
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/*
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* As the cpu state is pushed to kvm via kvm_set_mp_state rather
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* than via cpu_synchronize_state, we need update kvm here.
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*/
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if (kvm_enabled()) {
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kvm_s390_set_cpu_state(cpu, cpu->env.cpu_state);
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return kvm_s390_vcpu_interrupt_post_load(cpu);
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}
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return 0;
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}
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static int cpu_pre_save(void *opaque)
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{
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S390CPU *cpu = opaque;
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if (kvm_enabled()) {
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kvm_s390_vcpu_interrupt_pre_save(cpu);
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}
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return 0;
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}
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static inline bool fpu_needed(void *opaque)
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{
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/* This looks odd, but we might want to NOT transfer fprs in the future */
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return true;
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}
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static const VMStateDescription vmstate_fpu = {
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.name = "cpu/fpu",
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.version_id = 1,
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.minimum_version_id = 1,
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.needed = fpu_needed,
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.fields = (VMStateField[]) {
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VMSTATE_UINT64(env.vregs[0][0].ll, S390CPU),
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VMSTATE_UINT64(env.vregs[1][0].ll, S390CPU),
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VMSTATE_UINT64(env.vregs[2][0].ll, S390CPU),
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VMSTATE_UINT64(env.vregs[3][0].ll, S390CPU),
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VMSTATE_UINT64(env.vregs[4][0].ll, S390CPU),
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VMSTATE_UINT64(env.vregs[5][0].ll, S390CPU),
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VMSTATE_UINT64(env.vregs[6][0].ll, S390CPU),
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VMSTATE_UINT64(env.vregs[7][0].ll, S390CPU),
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VMSTATE_UINT64(env.vregs[8][0].ll, S390CPU),
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VMSTATE_UINT64(env.vregs[9][0].ll, S390CPU),
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VMSTATE_UINT64(env.vregs[10][0].ll, S390CPU),
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VMSTATE_UINT64(env.vregs[11][0].ll, S390CPU),
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VMSTATE_UINT64(env.vregs[12][0].ll, S390CPU),
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VMSTATE_UINT64(env.vregs[13][0].ll, S390CPU),
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VMSTATE_UINT64(env.vregs[14][0].ll, S390CPU),
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VMSTATE_UINT64(env.vregs[15][0].ll, S390CPU),
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VMSTATE_UINT32(env.fpc, S390CPU),
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VMSTATE_END_OF_LIST()
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}
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};
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static bool vregs_needed(void *opaque)
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{
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return s390_has_feat(S390_FEAT_VECTOR);
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}
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static const VMStateDescription vmstate_vregs = {
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.name = "cpu/vregs",
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.version_id = 1,
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.minimum_version_id = 1,
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.needed = vregs_needed,
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.fields = (VMStateField[]) {
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/* vregs[0][0] -> vregs[15][0] and fregs are overlays */
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VMSTATE_UINT64(env.vregs[16][0].ll, S390CPU),
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VMSTATE_UINT64(env.vregs[17][0].ll, S390CPU),
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VMSTATE_UINT64(env.vregs[18][0].ll, S390CPU),
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VMSTATE_UINT64(env.vregs[19][0].ll, S390CPU),
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VMSTATE_UINT64(env.vregs[20][0].ll, S390CPU),
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VMSTATE_UINT64(env.vregs[21][0].ll, S390CPU),
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VMSTATE_UINT64(env.vregs[22][0].ll, S390CPU),
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VMSTATE_UINT64(env.vregs[23][0].ll, S390CPU),
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VMSTATE_UINT64(env.vregs[24][0].ll, S390CPU),
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VMSTATE_UINT64(env.vregs[25][0].ll, S390CPU),
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VMSTATE_UINT64(env.vregs[26][0].ll, S390CPU),
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VMSTATE_UINT64(env.vregs[27][0].ll, S390CPU),
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VMSTATE_UINT64(env.vregs[28][0].ll, S390CPU),
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VMSTATE_UINT64(env.vregs[29][0].ll, S390CPU),
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VMSTATE_UINT64(env.vregs[30][0].ll, S390CPU),
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VMSTATE_UINT64(env.vregs[31][0].ll, S390CPU),
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VMSTATE_UINT64(env.vregs[0][1].ll, S390CPU),
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VMSTATE_UINT64(env.vregs[1][1].ll, S390CPU),
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VMSTATE_UINT64(env.vregs[2][1].ll, S390CPU),
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VMSTATE_UINT64(env.vregs[3][1].ll, S390CPU),
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VMSTATE_UINT64(env.vregs[4][1].ll, S390CPU),
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VMSTATE_UINT64(env.vregs[5][1].ll, S390CPU),
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VMSTATE_UINT64(env.vregs[6][1].ll, S390CPU),
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VMSTATE_UINT64(env.vregs[7][1].ll, S390CPU),
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VMSTATE_UINT64(env.vregs[8][1].ll, S390CPU),
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VMSTATE_UINT64(env.vregs[9][1].ll, S390CPU),
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VMSTATE_UINT64(env.vregs[10][1].ll, S390CPU),
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VMSTATE_UINT64(env.vregs[11][1].ll, S390CPU),
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VMSTATE_UINT64(env.vregs[12][1].ll, S390CPU),
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VMSTATE_UINT64(env.vregs[13][1].ll, S390CPU),
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VMSTATE_UINT64(env.vregs[14][1].ll, S390CPU),
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VMSTATE_UINT64(env.vregs[15][1].ll, S390CPU),
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VMSTATE_UINT64(env.vregs[16][1].ll, S390CPU),
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VMSTATE_UINT64(env.vregs[17][1].ll, S390CPU),
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VMSTATE_UINT64(env.vregs[18][1].ll, S390CPU),
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VMSTATE_UINT64(env.vregs[19][1].ll, S390CPU),
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VMSTATE_UINT64(env.vregs[20][1].ll, S390CPU),
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VMSTATE_UINT64(env.vregs[21][1].ll, S390CPU),
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VMSTATE_UINT64(env.vregs[22][1].ll, S390CPU),
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VMSTATE_UINT64(env.vregs[23][1].ll, S390CPU),
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VMSTATE_UINT64(env.vregs[24][1].ll, S390CPU),
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VMSTATE_UINT64(env.vregs[25][1].ll, S390CPU),
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VMSTATE_UINT64(env.vregs[26][1].ll, S390CPU),
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VMSTATE_UINT64(env.vregs[27][1].ll, S390CPU),
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VMSTATE_UINT64(env.vregs[28][1].ll, S390CPU),
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VMSTATE_UINT64(env.vregs[29][1].ll, S390CPU),
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VMSTATE_UINT64(env.vregs[30][1].ll, S390CPU),
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VMSTATE_UINT64(env.vregs[31][1].ll, S390CPU),
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VMSTATE_END_OF_LIST()
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}
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};
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static bool riccb_needed(void *opaque)
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{
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return s390_has_feat(S390_FEAT_RUNTIME_INSTRUMENTATION);
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}
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const VMStateDescription vmstate_riccb = {
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.name = "cpu/riccb",
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.version_id = 1,
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.minimum_version_id = 1,
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.needed = riccb_needed,
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.fields = (VMStateField[]) {
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VMSTATE_UINT8_ARRAY(env.riccb, S390CPU, 64),
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VMSTATE_END_OF_LIST()
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}
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};
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static bool exval_needed(void *opaque)
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{
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S390CPU *cpu = opaque;
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return cpu->env.ex_value != 0;
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}
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const VMStateDescription vmstate_exval = {
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.name = "cpu/exval",
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.version_id = 1,
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.minimum_version_id = 1,
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.needed = exval_needed,
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.fields = (VMStateField[]) {
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VMSTATE_UINT64(env.ex_value, S390CPU),
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VMSTATE_END_OF_LIST()
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}
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};
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static bool gscb_needed(void *opaque)
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{
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return s390_has_feat(S390_FEAT_GUARDED_STORAGE);
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}
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const VMStateDescription vmstate_gscb = {
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.name = "cpu/gscb",
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.version_id = 1,
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.minimum_version_id = 1,
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.needed = gscb_needed,
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.fields = (VMStateField[]) {
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VMSTATE_UINT64_ARRAY(env.gscb, S390CPU, 4),
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VMSTATE_END_OF_LIST()
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}
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};
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static bool bpbc_needed(void *opaque)
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{
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return s390_has_feat(S390_FEAT_BPB);
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}
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const VMStateDescription vmstate_bpbc = {
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.name = "cpu/bpbc",
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.version_id = 1,
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.minimum_version_id = 1,
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.needed = bpbc_needed,
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.fields = (VMStateField[]) {
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VMSTATE_BOOL(env.bpbc, S390CPU),
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VMSTATE_END_OF_LIST()
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}
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};
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const VMStateDescription vmstate_s390_cpu = {
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.name = "cpu",
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.post_load = cpu_post_load,
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.pre_save = cpu_pre_save,
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.version_id = 4,
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.minimum_version_id = 3,
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.fields = (VMStateField[]) {
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VMSTATE_UINT64_ARRAY(env.regs, S390CPU, 16),
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VMSTATE_UINT64(env.psw.mask, S390CPU),
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VMSTATE_UINT64(env.psw.addr, S390CPU),
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VMSTATE_UINT64(env.psa, S390CPU),
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VMSTATE_UINT32(env.todpr, S390CPU),
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VMSTATE_UINT64(env.pfault_token, S390CPU),
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VMSTATE_UINT64(env.pfault_compare, S390CPU),
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VMSTATE_UINT64(env.pfault_select, S390CPU),
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VMSTATE_UINT64(env.cputm, S390CPU),
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VMSTATE_UINT64(env.ckc, S390CPU),
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VMSTATE_UINT64(env.gbea, S390CPU),
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VMSTATE_UINT64(env.pp, S390CPU),
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VMSTATE_UINT32_ARRAY(env.aregs, S390CPU, 16),
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VMSTATE_UINT64_ARRAY(env.cregs, S390CPU, 16),
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VMSTATE_UINT8(env.cpu_state, S390CPU),
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VMSTATE_UINT8(env.sigp_order, S390CPU),
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VMSTATE_UINT32_V(irqstate_saved_size, S390CPU, 4),
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VMSTATE_VBUFFER_UINT32(irqstate, S390CPU, 4, NULL,
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irqstate_saved_size),
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VMSTATE_END_OF_LIST()
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},
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.subsections = (const VMStateDescription*[]) {
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&vmstate_fpu,
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&vmstate_vregs,
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&vmstate_riccb,
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&vmstate_exval,
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&vmstate_gscb,
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&vmstate_bpbc,
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NULL
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},
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};
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