diff options
Diffstat (limited to 'sys/amd64/vmm/intel/vmx_msr.h')
| -rw-r--r-- | sys/amd64/vmm/intel/vmx_msr.h | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/sys/amd64/vmm/intel/vmx_msr.h b/sys/amd64/vmm/intel/vmx_msr.h new file mode 100644 index 000000000000..f88f37bd9163 --- /dev/null +++ b/sys/amd64/vmm/intel/vmx_msr.h @@ -0,0 +1,72 @@ +/*- + * SPDX-License-Identifier: BSD-2-Clause + * + * Copyright (c) 2011 NetApp, Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY NETAPP, INC ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL NETAPP, INC OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#ifndef _VMX_MSR_H_ +#define _VMX_MSR_H_ + +struct vmx; + +void vmx_msr_init(void); +void vmx_msr_guest_init(struct vmx *vmx, struct vmx_vcpu *vcpu); +void vmx_msr_guest_enter_tsc_aux(struct vmx *vmx, struct vmx_vcpu *vcpu); +void vmx_msr_guest_enter(struct vmx_vcpu *vcpu); +void vmx_msr_guest_exit(struct vmx_vcpu *vcpu); +void vmx_msr_guest_exit_tsc_aux(struct vmx *vmx, struct vmx_vcpu *vcpu); +int vmx_rdmsr(struct vmx_vcpu *vcpu, u_int num, uint64_t *val, bool *retu); +int vmx_wrmsr(struct vmx_vcpu *vcpu, u_int num, uint64_t val, bool *retu); + +uint32_t vmx_revision(void); + +int vmx_set_ctlreg(int ctl_reg, int true_ctl_reg, uint32_t ones_mask, + uint32_t zeros_mask, uint32_t *retval); + +/* + * According to Section 21.10.4 "Software Access to Related Structures", + * changes to data structures pointed to by the VMCS must be made only when + * there is no logical processor with a current VMCS that points to the + * data structure. + * + * This pretty much limits us to configuring the MSR bitmap before VMCS + * initialization for SMP VMs. Unless of course we do it the hard way - which + * would involve some form of synchronization between the vcpus to vmclear + * all VMCSs' that point to the bitmap. + */ +#define MSR_BITMAP_ACCESS_NONE 0x0 +#define MSR_BITMAP_ACCESS_READ 0x1 +#define MSR_BITMAP_ACCESS_WRITE 0x2 +#define MSR_BITMAP_ACCESS_RW (MSR_BITMAP_ACCESS_READ|MSR_BITMAP_ACCESS_WRITE) +void msr_bitmap_initialize(char *bitmap); +int msr_bitmap_change_access(char *bitmap, u_int msr, int access); + +#define guest_msr_rw(vmx, msr) \ + msr_bitmap_change_access((vmx)->msr_bitmap, (msr), MSR_BITMAP_ACCESS_RW) + +#define guest_msr_ro(vmx, msr) \ + msr_bitmap_change_access((vmx)->msr_bitmap, (msr), MSR_BITMAP_ACCESS_READ) + +#endif |