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https://github.com/clearlinux/kvmtool.git
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Pekka Enberg
2f3976eeee
This patch adds BIOS E820 memory map emulation to KVM. Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
78 lines
2.1 KiB
C
78 lines
2.1 KiB
C
#ifndef KVM__KVM_H
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#define KVM__KVM_H
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#include "kvm/interrupt.h"
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#include <linux/kvm.h> /* for struct kvm_regs */
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#include <stdbool.h>
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#include <stdint.h>
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struct kvm {
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int sys_fd; /* For system ioctls(), i.e. /dev/kvm */
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int vm_fd; /* For VM ioctls() */
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int vcpu_fd; /* For VCPU ioctls() */
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struct kvm_run *kvm_run;
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uint64_t ram_size;
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void *ram_start;
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bool nmi_disabled;
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uint16_t boot_selector;
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uint16_t boot_ip;
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uint16_t boot_sp;
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struct kvm_regs regs;
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struct kvm_sregs sregs;
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struct kvm_fpu fpu;
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struct kvm_msrs *msrs; /* dynamically allocated */
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struct interrupt_table interrupt_table;
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};
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struct kvm *kvm__init(const char *kvm_dev);
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void kvm__delete(struct kvm *self);
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void kvm__setup_cpuid(struct kvm *self);
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void kvm__enable_singlestep(struct kvm *self);
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bool kvm__load_kernel(struct kvm *kvm, const char *kernel_filename, const char *kernel_cmdline);
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void kvm__reset_vcpu(struct kvm *self);
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void kvm__setup_mem(struct kvm *self);
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void kvm__run(struct kvm *self);
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bool kvm__emulate_io(struct kvm *self, uint16_t port, void *data, int direction, int size, uint32_t count);
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bool kvm__emulate_mmio(struct kvm *self, uint64_t phys_addr, uint8_t *data, uint32_t len, uint8_t is_write);
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/*
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* Debugging
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*/
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void kvm__show_code(struct kvm *self);
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void kvm__show_registers(struct kvm *self);
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void kvm__show_page_tables(struct kvm *self);
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void kvm__dump_mem(struct kvm *self, unsigned long addr, unsigned long size);
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extern const char *kvm_exit_reasons[];
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static inline bool host_ptr_in_ram(struct kvm *self, void *p)
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{
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return self->ram_start <= p && p < (self->ram_start + self->ram_size);
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}
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static inline uint32_t segment_to_flat(uint16_t selector, uint16_t offset)
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{
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return ((uint32_t)selector << 4) + (uint32_t) offset;
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}
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static inline void *guest_flat_to_host(struct kvm *self, unsigned long offset)
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{
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return self->ram_start + offset;
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}
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static inline void *guest_real_to_host(struct kvm *self, uint16_t selector, uint16_t offset)
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{
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unsigned long flat = segment_to_flat(selector, offset);
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return guest_flat_to_host(self, flat);
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}
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#endif /* KVM__KVM_H */
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