8d26cf7b40
There are several places in the kvm module, which set the prefix register. Since we need to flush the cpu, lets combine this operation into a helper function. This helper will also explicitely mask out the unused bits. Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
93 lines
2.7 KiB
C
93 lines
2.7 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. 2008,2009
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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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* Christian Ehrhardt <ehrhardt@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/hrtimer.h>
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#include <linux/kvm.h>
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#include <linux/kvm_host.h>
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/* The current code can have up to 256 pages for virtio */
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#define VIRTIODESCSPACE (256ul * 4096ul)
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typedef int (*intercept_handler_t)(struct kvm_vcpu *vcpu);
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/* negativ values are error codes, positive values for internal conditions */
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#define SIE_INTERCEPT_RERUNVCPU (1<<0)
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#define SIE_INTERCEPT_UCONTROL (1<<1)
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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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static inline int __cpu_is_stopped(struct kvm_vcpu *vcpu)
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{
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return atomic_read(&vcpu->arch.sie_block->cpuflags) & CPUSTAT_STOP_INT;
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}
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static inline int kvm_is_ucontrol(struct kvm *kvm)
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{
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#ifdef CONFIG_KVM_S390_UCONTROL
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if (kvm->arch.gmap)
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return 0;
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return 1;
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#else
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return 0;
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#endif
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}
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static inline void kvm_s390_set_prefix(struct kvm_vcpu *vcpu, u32 prefix)
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{
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vcpu->arch.sie_block->prefix = prefix & 0x7fffe000u;
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vcpu->arch.sie_block->ihcpu = 0xffff;
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}
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int kvm_s390_handle_wait(struct kvm_vcpu *vcpu);
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enum hrtimer_restart kvm_s390_idle_wakeup(struct hrtimer *timer);
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void kvm_s390_tasklet(unsigned long parm);
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void kvm_s390_deliver_pending_interrupts(struct kvm_vcpu *vcpu);
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int kvm_s390_inject_vm(struct kvm *kvm,
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struct kvm_s390_interrupt *s390int);
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int kvm_s390_inject_vcpu(struct kvm_vcpu *vcpu,
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struct kvm_s390_interrupt *s390int);
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int kvm_s390_inject_program_int(struct kvm_vcpu *vcpu, u16 code);
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int kvm_s390_inject_sigp_stop(struct kvm_vcpu *vcpu, int action);
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/* implemented in priv.c */
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int kvm_s390_handle_b2(struct kvm_vcpu *vcpu);
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int kvm_s390_handle_e5(struct kvm_vcpu *vcpu);
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/* implemented in sigp.c */
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int kvm_s390_handle_sigp(struct kvm_vcpu *vcpu);
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/* implemented in kvm-s390.c */
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int kvm_s390_vcpu_store_status(struct kvm_vcpu *vcpu,
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unsigned long addr);
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/* implemented in diag.c */
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int kvm_s390_handle_diag(struct kvm_vcpu *vcpu);
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#endif
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