18ff949474
This patch adds handling code for the following SIGP orders: - SIGP SET ARCHITECTURE - SIGP SET PREFIX - SIGP STOP - SIGP STOP AND STORE STATUS - SIGP STORE STATUS AT ADDRESS SIGP STOP (AND STORE STATUS) are the only orders that can stay pending forever (and may only be interrupted by resets), so special care has to be taken about them. Their status also has to be tracked within QEMU. This patch takes care of migrating this status (e.g. if migration happens during a SIGP STOP). Due to the BQL, only one VCPU is currently able to execute SIGP handlers at a time. According to the PoP, BUSY should be returned if another SIGP order is currently being executed on a VCPU. This can only be implemented when the BQL does not protect all handlers. For now, all SIGP orders on all VCPUs will be serialized, which will be okay for the first shot. Reviewed-by: Thomas Huth <thuth@linux.vnet.ibm.com> Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com> Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Message-Id: <1424783731-43426-7-git-send-email-jfrei@linux.vnet.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
78 lines
2.7 KiB
C
78 lines
2.7 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 "hw/hw.h"
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#include "cpu.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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}
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return 0;
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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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.version_id = 2,
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.minimum_version_id = 2,
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.fields = (VMStateField[]) {
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VMSTATE_UINT64(env.fregs[0].ll, S390CPU),
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VMSTATE_UINT64(env.fregs[1].ll, S390CPU),
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VMSTATE_UINT64(env.fregs[2].ll, S390CPU),
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VMSTATE_UINT64(env.fregs[3].ll, S390CPU),
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VMSTATE_UINT64(env.fregs[4].ll, S390CPU),
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VMSTATE_UINT64(env.fregs[5].ll, S390CPU),
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VMSTATE_UINT64(env.fregs[6].ll, S390CPU),
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VMSTATE_UINT64(env.fregs[7].ll, S390CPU),
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VMSTATE_UINT64(env.fregs[8].ll, S390CPU),
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VMSTATE_UINT64(env.fregs[9].ll, S390CPU),
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VMSTATE_UINT64(env.fregs[10].ll, S390CPU),
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VMSTATE_UINT64(env.fregs[11].ll, S390CPU),
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VMSTATE_UINT64(env.fregs[12].ll, S390CPU),
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VMSTATE_UINT64(env.fregs[13].ll, S390CPU),
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VMSTATE_UINT64(env.fregs[14].ll, S390CPU),
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VMSTATE_UINT64(env.fregs[15].ll, S390CPU),
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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.fpc, 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_END_OF_LIST()
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},
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};
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