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7e0fa79412
libvmmapi leaves a hole at [3GB, 4GB) in the guest physical address space. This hole is not used in the arm64 port, which maps everything above 4GB. This change makes the code a bit more general to accomodate arm64 more naturally. In particular: - Remove vm_set_lowmem_limit(): it is unused and doesn't have well-defined constraints, e.g., nothing prevents a consumer from setting a lowmem limit above the highmem base. - Define a constant for the highmem base and use that everywhere that the base is currently hard-coded. - Make the lowmem limit a compile-time constant instead of a vmctx field. - Store segment info in an array. - Add vm_get_highmem_base(), for use in bhyve since the current value is hard-coded in some places. No functional change intended. Reviewed by: corvink, jhb MFC after: 2 weeks Sponsored by: Innovate UK Differential Revision: https://reviews.freebsd.org/D41004
85 lines
1.5 KiB
C
85 lines
1.5 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 2022 John Baldwin <jhb@FreeBSD.org>
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*/
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#ifndef __VMMAPI_INTERNAL_H__
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#define __VMMAPI_INTERNAL_H__
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#include <sys/types.h>
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enum {
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VM_MEMSEG_LOW,
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VM_MEMSEG_HIGH,
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VM_MEMSEG_COUNT,
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};
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struct vmctx {
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int fd;
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struct {
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vm_paddr_t base;
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vm_size_t size;
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} memsegs[VM_MEMSEG_COUNT];
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int memflags;
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char *baseaddr;
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char *name;
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};
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struct vcpu {
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struct vmctx *ctx;
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int vcpuid;
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};
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int vcpu_ioctl(struct vcpu *vcpu, u_long cmd, void *arg);
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extern const char *vm_capstrmap[];
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#define VM_COMMON_IOCTLS \
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VM_RUN, \
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VM_SUSPEND, \
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VM_REINIT, \
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VM_ALLOC_MEMSEG, \
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VM_GET_MEMSEG, \
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VM_MMAP_MEMSEG, \
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VM_MMAP_MEMSEG, \
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VM_MMAP_GETNEXT, \
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VM_MUNMAP_MEMSEG, \
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VM_SET_REGISTER, \
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VM_GET_REGISTER, \
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VM_SET_REGISTER_SET, \
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VM_GET_REGISTER_SET, \
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VM_INJECT_EXCEPTION, \
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VM_SET_CAPABILITY, \
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VM_GET_CAPABILITY, \
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VM_STATS, \
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VM_STAT_DESC, \
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VM_GET_GPA_PMAP, \
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VM_GLA2GPA, \
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VM_GLA2GPA_NOFAULT, \
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VM_ACTIVATE_CPU, \
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VM_GET_CPUS, \
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VM_SUSPEND_CPU, \
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VM_RESUME_CPU, \
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VM_SET_INTINFO, \
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VM_GET_INTINFO, \
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VM_RESTART_INSTRUCTION, \
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VM_SET_TOPOLOGY, \
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VM_GET_TOPOLOGY, \
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VM_SNAPSHOT_REQ, \
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VM_RESTORE_TIME
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#define VM_PPT_IOCTLS \
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VM_BIND_PPTDEV, \
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VM_UNBIND_PPTDEV, \
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VM_MAP_PPTDEV_MMIO, \
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VM_PPTDEV_MSI, \
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VM_PPTDEV_MSIX, \
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VM_UNMAP_PPTDEV_MMIO, \
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VM_PPTDEV_DISABLE_MSIX
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extern const cap_ioctl_t vm_ioctl_cmds[];
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extern size_t vm_ioctl_ncmds;
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#endif /* !__VMMAPI_INTERNAL_H__ */
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