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34 void vmx_msr_init(void);
35 void vmx_msr_guest_init(struct vmx *vmx, int vcpuid);
36 void vmx_msr_guest_enter(struct vmx *vmx, int vcpuid);
37 void vmx_msr_guest_exit(struct vmx *vmx, int vcpuid);
38 int vmx_rdmsr(struct vmx *, int vcpuid, u_int num, uint64_t *val, bool *retu);
39 int vmx_wrmsr(struct vmx *, int vcpuid, u_int num, uint64_t val, bool *retu);
41 uint32_t vmx_revision(void);
43 int vmx_set_ctlreg(int ctl_reg, int true_ctl_reg, uint32_t ones_mask,
44 uint32_t zeros_mask, uint32_t *retval);
47 * According to Section 21.10.4 "Software Access to Related Structures",
48 * changes to data structures pointed to by the VMCS must be made only when
49 * there is no logical processor with a current VMCS that points to the
52 * This pretty much limits us to configuring the MSR bitmap before VMCS
53 * initialization for SMP VMs. Unless of course we do it the hard way - which
54 * would involve some form of synchronization between the vcpus to vmclear
55 * all VMCSs' that point to the bitmap.
57 #define MSR_BITMAP_ACCESS_NONE 0x0
58 #define MSR_BITMAP_ACCESS_READ 0x1
59 #define MSR_BITMAP_ACCESS_WRITE 0x2
60 #define MSR_BITMAP_ACCESS_RW (MSR_BITMAP_ACCESS_READ|MSR_BITMAP_ACCESS_WRITE)
61 void msr_bitmap_initialize(char *bitmap);
62 int msr_bitmap_change_access(char *bitmap, u_int msr, int access);
64 #define guest_msr_rw(vmx, msr) \
65 msr_bitmap_change_access((vmx)->msr_bitmap, (msr), MSR_BITMAP_ACCESS_RW)
67 #define guest_msr_ro(vmx, msr) \
68 msr_bitmap_change_access((vmx)->msr_bitmap, (msr), MSR_BITMAP_ACCESS_READ)