628eb9b8a8
This patch relocates the variables kvm-s390 uses to track guest mem addr/size. As discussed dropping the variables at struct kvm_arch level allows to use the common vcpu->request based mechanism to reload guest memory if e.g. changes via set_memory_region. The kick mechanism introduced in this series is used to ensure running vcpus leave guest state to catch the update. Signed-off-by: Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com> Signed-off-by: Avi Kivity <avi@redhat.com>
97 lines
2.9 KiB
C
97 lines
2.9 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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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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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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static inline int kvm_s390_vcpu_get_memsize(struct kvm_vcpu *vcpu)
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{
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return vcpu->arch.sie_block->gmslm
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- vcpu->arch.sie_block->gmsor
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- VIRTIODESCSPACE + 1ul;
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}
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static inline void kvm_s390_vcpu_set_mem(struct kvm_vcpu *vcpu)
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{
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struct kvm_memory_slot *mem;
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down_read(&vcpu->kvm->slots_lock);
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mem = &vcpu->kvm->memslots[0];
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vcpu->arch.sie_block->gmsor = mem->userspace_addr;
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vcpu->arch.sie_block->gmslm =
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mem->userspace_addr +
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(mem->npages << PAGE_SHIFT) +
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VIRTIODESCSPACE - 1ul;
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up_read(&vcpu->kvm->slots_lock);
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}
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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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/* 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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