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608f97c359
systems with VT-x/EPT (e.g. Sandybridge Macbooks). This will most likely work on VMWare Workstation8/Player4 as well. See the VMWare app note at: http://communities.vmware.com/docs/DOC-8970 Fusion doesn't propagate the PAT MSR auto save-restore entry/exit control bits. Deal with this by noting that fact and setting up the PAT MSR to essentially be a no-op - it is init'd to power-on default, and a software shadow copy maintained. Since it is treated as a no-op, o/s settings are essentially ignored. This may not give correct results, but since the hypervisor is running nested, a number of bets are already off. On a quad-core/HT-enabled 'MacBook8,2', nested VMs with 1/2/4 vCPUs were fired up. The more nested vCPUs the worse the performance, unless the VMs were started up in multiplexed mode where things worked perfectly up to the limit of 8 vCPUs. Reviewed by: neel
44 lines
1.7 KiB
C
44 lines
1.7 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 _VMM_MSR_H_
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#define _VMM_MSR_H_
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#define VMM_MSR_NUM 16
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struct vm;
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void vmm_msr_init(void);
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int emulate_wrmsr(struct vm *vm, int vcpu, u_int msr, uint64_t val);
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int emulate_rdmsr(struct vm *vm, int vcpu, u_int msr);
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void guest_msrs_init(struct vm *vm, int cpu);
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void guest_msr_valid(int msr);
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void restore_host_msrs(struct vm *vm, int cpu);
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void restore_guest_msrs(struct vm *vm, int cpu);
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#endif
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