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d37f2adb38
The faulting instruction needs to be restarted when the exception handler is done handling the fault. bhyve now does this correctly by setting 'vmexit[vcpu].inst_length' to zero so the %rip is not advanced. A minor complication is that the fault injection APIs are used by instruction emulation code that is shared by vmm.ko and bhyve. Thus the argument that refers to 'struct vm *' in kernel or 'struct vmctx *' in userspace needs to be loosely typed as a 'void *'.
154 lines
6.7 KiB
C
154 lines
6.7 KiB
C
/*-
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* Copyright (c) 2011 NetApp, Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY NETAPP, INC ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL NETAPP, INC OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _VMMAPI_H_
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#define _VMMAPI_H_
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#include <sys/param.h>
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#include <sys/cpuset.h>
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struct iovec;
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struct vmctx;
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enum x2apic_state;
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/*
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* Different styles of mapping the memory assigned to a VM into the address
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* space of the controlling process.
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*/
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enum vm_mmap_style {
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VM_MMAP_NONE, /* no mapping */
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VM_MMAP_ALL, /* fully and statically mapped */
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VM_MMAP_SPARSE, /* mappings created on-demand */
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};
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#define VM_MEM_F_INCORE 0x01 /* include guest memory in core file */
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int vm_create(const char *name);
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struct vmctx *vm_open(const char *name);
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void vm_destroy(struct vmctx *ctx);
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int vm_parse_memsize(const char *optarg, size_t *memsize);
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int vm_get_memory_seg(struct vmctx *ctx, vm_paddr_t gpa, size_t *ret_len,
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int *wired);
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int vm_setup_memory(struct vmctx *ctx, size_t len, enum vm_mmap_style s);
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void *vm_map_gpa(struct vmctx *ctx, vm_paddr_t gaddr, size_t len);
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int vm_get_gpa_pmap(struct vmctx *, uint64_t gpa, uint64_t *pte, int *num);
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uint32_t vm_get_lowmem_limit(struct vmctx *ctx);
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void vm_set_lowmem_limit(struct vmctx *ctx, uint32_t limit);
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void vm_set_memflags(struct vmctx *ctx, int flags);
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size_t vm_get_lowmem_size(struct vmctx *ctx);
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size_t vm_get_highmem_size(struct vmctx *ctx);
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int vm_set_desc(struct vmctx *ctx, int vcpu, int reg,
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uint64_t base, uint32_t limit, uint32_t access);
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int vm_get_desc(struct vmctx *ctx, int vcpu, int reg,
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uint64_t *base, uint32_t *limit, uint32_t *access);
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int vm_get_seg_desc(struct vmctx *ctx, int vcpu, int reg,
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struct seg_desc *seg_desc);
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int vm_set_register(struct vmctx *ctx, int vcpu, int reg, uint64_t val);
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int vm_get_register(struct vmctx *ctx, int vcpu, int reg, uint64_t *retval);
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int vm_run(struct vmctx *ctx, int vcpu, uint64_t rip,
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struct vm_exit *ret_vmexit);
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int vm_suspend(struct vmctx *ctx, enum vm_suspend_how how);
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int vm_reinit(struct vmctx *ctx);
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int vm_apicid2vcpu(struct vmctx *ctx, int apicid);
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int vm_inject_exception(struct vmctx *ctx, int vcpu, int vec);
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int vm_inject_exception2(struct vmctx *ctx, int vcpu, int vec, int errcode);
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int vm_lapic_irq(struct vmctx *ctx, int vcpu, int vector);
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int vm_lapic_local_irq(struct vmctx *ctx, int vcpu, int vector);
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int vm_lapic_msi(struct vmctx *ctx, uint64_t addr, uint64_t msg);
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int vm_ioapic_assert_irq(struct vmctx *ctx, int irq);
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int vm_ioapic_deassert_irq(struct vmctx *ctx, int irq);
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int vm_ioapic_pulse_irq(struct vmctx *ctx, int irq);
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int vm_ioapic_pincount(struct vmctx *ctx, int *pincount);
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int vm_isa_assert_irq(struct vmctx *ctx, int atpic_irq, int ioapic_irq);
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int vm_isa_deassert_irq(struct vmctx *ctx, int atpic_irq, int ioapic_irq);
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int vm_isa_pulse_irq(struct vmctx *ctx, int atpic_irq, int ioapic_irq);
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int vm_isa_set_irq_trigger(struct vmctx *ctx, int atpic_irq,
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enum vm_intr_trigger trigger);
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int vm_inject_nmi(struct vmctx *ctx, int vcpu);
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int vm_capability_name2type(const char *capname);
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const char *vm_capability_type2name(int type);
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int vm_get_capability(struct vmctx *ctx, int vcpu, enum vm_cap_type cap,
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int *retval);
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int vm_set_capability(struct vmctx *ctx, int vcpu, enum vm_cap_type cap,
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int val);
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int vm_assign_pptdev(struct vmctx *ctx, int bus, int slot, int func);
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int vm_unassign_pptdev(struct vmctx *ctx, int bus, int slot, int func);
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int vm_map_pptdev_mmio(struct vmctx *ctx, int bus, int slot, int func,
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vm_paddr_t gpa, size_t len, vm_paddr_t hpa);
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int vm_setup_pptdev_msi(struct vmctx *ctx, int vcpu, int bus, int slot,
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int func, uint64_t addr, uint64_t msg, int numvec);
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int vm_setup_pptdev_msix(struct vmctx *ctx, int vcpu, int bus, int slot,
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int func, int idx, uint64_t addr, uint64_t msg,
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uint32_t vector_control);
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int vm_get_intinfo(struct vmctx *ctx, int vcpu, uint64_t *i1, uint64_t *i2);
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int vm_set_intinfo(struct vmctx *ctx, int vcpu, uint64_t exit_intinfo);
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/*
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* Return a pointer to the statistics buffer. Note that this is not MT-safe.
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*/
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uint64_t *vm_get_stats(struct vmctx *ctx, int vcpu, struct timeval *ret_tv,
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int *ret_entries);
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const char *vm_get_stat_desc(struct vmctx *ctx, int index);
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int vm_get_x2apic_state(struct vmctx *ctx, int vcpu, enum x2apic_state *s);
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int vm_set_x2apic_state(struct vmctx *ctx, int vcpu, enum x2apic_state s);
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int vm_get_hpet_capabilities(struct vmctx *ctx, uint32_t *capabilities);
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/*
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* Translate the GLA range [gla,gla+len) into GPA segments in 'iov'.
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* The 'iovcnt' should be big enough to accomodate all GPA segments.
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* Returns 0 on success, 1 on a guest fault condition and -1 otherwise.
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*/
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int vm_copy_setup(struct vmctx *ctx, int vcpu, struct vm_guest_paging *pg,
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uint64_t gla, size_t len, int prot, struct iovec *iov, int iovcnt);
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void vm_copyin(struct vmctx *ctx, int vcpu, struct iovec *guest_iov,
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void *host_dst, size_t len);
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void vm_copyout(struct vmctx *ctx, int vcpu, const void *host_src,
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struct iovec *guest_iov, size_t len);
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/* Reset vcpu register state */
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int vcpu_reset(struct vmctx *ctx, int vcpu);
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int vm_active_cpus(struct vmctx *ctx, cpuset_t *cpus);
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int vm_suspended_cpus(struct vmctx *ctx, cpuset_t *cpus);
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int vm_activate_cpu(struct vmctx *ctx, int vcpu);
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/*
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* FreeBSD specific APIs
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*/
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int vm_setup_freebsd_registers(struct vmctx *ctx, int vcpu,
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uint64_t rip, uint64_t cr3, uint64_t gdtbase,
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uint64_t rsp);
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int vm_setup_freebsd_registers_i386(struct vmctx *vmctx, int vcpu,
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uint32_t eip, uint32_t gdtbase,
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uint32_t esp);
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void vm_setup_freebsd_gdt(uint64_t *gdtr);
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#endif /* _VMMAPI_H_ */
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