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s390x: Add KVM PV dump interface
Let's add a few bits of code which hide the new KVM PV dump API from us via new functions. Signed-off-by: Janosch Frank <frankja@linux.ibm.com> Reviewed-by: Janis Schoetterl-Glausch <scgl@linux.ibm.com> Reviewed-by: Steffen Eiden <seiden@linux.ibm.com> [ Marc-André: fix up for compilation issue ] Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <20221017083822.43118-10-frankja@linux.ibm.com>
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2 changed files with 60 additions and 0 deletions
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@ -175,6 +175,57 @@ bool kvm_s390_pv_info_basic_valid(void)
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return info_valid;
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}
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static int s390_pv_dump_cmd(uint64_t subcmd, uint64_t uaddr, uint64_t gaddr,
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uint64_t len)
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{
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struct kvm_s390_pv_dmp dmp = {
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.subcmd = subcmd,
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.buff_addr = uaddr,
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.buff_len = len,
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.gaddr = gaddr,
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};
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int ret;
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ret = s390_pv_cmd(KVM_PV_DUMP, (void *)&dmp);
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if (ret) {
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error_report("KVM DUMP command %ld failed", subcmd);
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}
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return ret;
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}
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int kvm_s390_dump_cpu(S390CPU *cpu, void *buff)
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{
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struct kvm_s390_pv_dmp dmp = {
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.subcmd = KVM_PV_DUMP_CPU,
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.buff_addr = (uint64_t)buff,
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.gaddr = 0,
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.buff_len = info_dump.dump_cpu_buffer_len,
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};
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struct kvm_pv_cmd pv = {
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.cmd = KVM_PV_DUMP,
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.data = (uint64_t)&dmp,
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};
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return kvm_vcpu_ioctl(CPU(cpu), KVM_S390_PV_CPU_COMMAND, &pv);
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}
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int kvm_s390_dump_init(void)
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{
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return s390_pv_dump_cmd(KVM_PV_DUMP_INIT, 0, 0, 0);
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}
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int kvm_s390_dump_mem_state(uint64_t gaddr, size_t len, void *dest)
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{
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return s390_pv_dump_cmd(KVM_PV_DUMP_CONFIG_STOR_STATE, (uint64_t)dest,
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gaddr, len);
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}
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int kvm_s390_dump_completion_data(void *buff)
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{
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return s390_pv_dump_cmd(KVM_PV_DUMP_COMPLETE, (uint64_t)buff, 0,
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info_dump.dump_config_finalize_len);
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}
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#define TYPE_S390_PV_GUEST "s390-pv-guest"
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OBJECT_DECLARE_SIMPLE_TYPE(S390PVGuest, S390_PV_GUEST)
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