forked from luck/tmp_suning_uos_patched
8f2abe6a1e
This path introduces handling of sie intercepts in three flavors: Intercepts are either handled completely in-kernel by kvm_handle_sie_intercept(), or passed to userspace with corresponding data in struct kvm_run in case kvm_handle_sie_intercept() returns -ENOTSUPP. In case of partial execution in kernel with the need of userspace support, kvm_handle_sie_intercept() may choose to set up struct kvm_run and return -EREMOTE. The trivial intercept reasons are handled in this patch: handle_noop() just does nothing for intercepts that don't require our support at all handle_stop() is called when a cpu enters stopped state, and it drops out to userland after updating our vcpu state handle_validity() faults in the cpu lowcore if needed, or passes the request to userland Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Carsten Otte <cotte@de.ibm.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
37 lines
1.0 KiB
C
37 lines
1.0 KiB
C
/*
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* kvm_s390.h - definition for kvm on s390
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*
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* Copyright IBM Corp. 2008
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License (version 2 only)
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* as published by the Free Software Foundation.
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*
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* Author(s): Carsten Otte <cotte@de.ibm.com>
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* Christian Borntraeger <borntraeger@de.ibm.com>
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*/
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#ifndef ARCH_S390_KVM_S390_H
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#define ARCH_S390_KVM_S390_H
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#include <linux/kvm_host.h>
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typedef int (*intercept_handler_t)(struct kvm_vcpu *vcpu);
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int kvm_handle_sie_intercept(struct kvm_vcpu *vcpu);
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#define VM_EVENT(d_kvm, d_loglevel, d_string, d_args...)\
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do { \
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debug_sprintf_event(d_kvm->arch.dbf, d_loglevel, d_string "\n", \
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d_args); \
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} while (0)
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#define VCPU_EVENT(d_vcpu, d_loglevel, d_string, d_args...)\
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do { \
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debug_sprintf_event(d_vcpu->kvm->arch.dbf, d_loglevel, \
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"%02d[%016lx-%016lx]: " d_string "\n", d_vcpu->vcpu_id, \
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d_vcpu->arch.sie_block->gpsw.mask, d_vcpu->arch.sie_block->gpsw.addr,\
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d_args); \
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} while (0)
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#endif
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