c49761dd57
Mainly focus on files that use BSD 2-Clause license, however the tool I was using misidentified many licenses so this was mostly a manual - error prone - task. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts.
221 lines
4.8 KiB
C
221 lines
4.8 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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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 _VMX_CPUFUNC_H_
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#define _VMX_CPUFUNC_H_
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struct vmcs;
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/*
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* Section 5.2 "Conventions" from Intel Architecture Manual 2B.
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*
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* error
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* VMsucceed 0
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* VMFailInvalid 1
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* VMFailValid 2 see also VMCS VM-Instruction Error Field
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*/
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#define VM_SUCCESS 0
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#define VM_FAIL_INVALID 1
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#define VM_FAIL_VALID 2
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#define VMX_SET_ERROR_CODE \
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" jnc 1f;" \
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" mov $1, %[error];" /* CF: error = 1 */ \
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" jmp 3f;" \
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"1: jnz 2f;" \
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" mov $2, %[error];" /* ZF: error = 2 */ \
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" jmp 3f;" \
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"2: mov $0, %[error];" \
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"3:"
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/* returns 0 on success and non-zero on failure */
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static __inline int
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vmxon(char *region)
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{
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int error;
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uint64_t addr;
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addr = vtophys(region);
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__asm __volatile("vmxon %[addr];"
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VMX_SET_ERROR_CODE
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: [error] "=r" (error)
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: [addr] "m" (*(uint64_t *)&addr)
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: "memory");
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return (error);
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}
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/* returns 0 on success and non-zero on failure */
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static __inline int
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vmclear(struct vmcs *vmcs)
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{
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int error;
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uint64_t addr;
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addr = vtophys(vmcs);
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__asm __volatile("vmclear %[addr];"
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VMX_SET_ERROR_CODE
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: [error] "=r" (error)
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: [addr] "m" (*(uint64_t *)&addr)
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: "memory");
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return (error);
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}
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static __inline void
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vmxoff(void)
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{
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__asm __volatile("vmxoff");
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}
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static __inline void
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vmptrst(uint64_t *addr)
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{
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__asm __volatile("vmptrst %[addr]" :: [addr]"m" (*addr) : "memory");
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}
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static __inline int
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vmptrld(struct vmcs *vmcs)
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{
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int error;
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uint64_t addr;
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addr = vtophys(vmcs);
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__asm __volatile("vmptrld %[addr];"
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VMX_SET_ERROR_CODE
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: [error] "=r" (error)
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: [addr] "m" (*(uint64_t *)&addr)
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: "memory");
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return (error);
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}
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static __inline int
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vmwrite(uint64_t reg, uint64_t val)
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{
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int error;
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__asm __volatile("vmwrite %[val], %[reg];"
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VMX_SET_ERROR_CODE
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: [error] "=r" (error)
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: [val] "r" (val), [reg] "r" (reg)
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: "memory");
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return (error);
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}
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static __inline int
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vmread(uint64_t r, uint64_t *addr)
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{
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int error;
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__asm __volatile("vmread %[r], %[addr];"
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VMX_SET_ERROR_CODE
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: [error] "=r" (error)
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: [r] "r" (r), [addr] "m" (*addr)
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: "memory");
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return (error);
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}
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static void __inline
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VMCLEAR(struct vmcs *vmcs)
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{
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int err;
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err = vmclear(vmcs);
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if (err != 0)
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panic("%s: vmclear(%p) error %d", __func__, vmcs, err);
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critical_exit();
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}
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static void __inline
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VMPTRLD(struct vmcs *vmcs)
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{
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int err;
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critical_enter();
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err = vmptrld(vmcs);
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if (err != 0)
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panic("%s: vmptrld(%p) error %d", __func__, vmcs, err);
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}
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#define INVVPID_TYPE_ADDRESS 0UL
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#define INVVPID_TYPE_SINGLE_CONTEXT 1UL
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#define INVVPID_TYPE_ALL_CONTEXTS 2UL
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struct invvpid_desc {
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uint16_t vpid;
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uint16_t _res1;
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uint32_t _res2;
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uint64_t linear_addr;
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};
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CTASSERT(sizeof(struct invvpid_desc) == 16);
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static void __inline
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invvpid(uint64_t type, struct invvpid_desc desc)
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{
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int error;
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__asm __volatile("invvpid %[desc], %[type];"
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VMX_SET_ERROR_CODE
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: [error] "=r" (error)
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: [desc] "m" (desc), [type] "r" (type)
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: "memory");
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if (error)
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panic("invvpid error %d", error);
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}
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#define INVEPT_TYPE_SINGLE_CONTEXT 1UL
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#define INVEPT_TYPE_ALL_CONTEXTS 2UL
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struct invept_desc {
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uint64_t eptp;
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uint64_t _res;
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};
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CTASSERT(sizeof(struct invept_desc) == 16);
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static void __inline
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invept(uint64_t type, struct invept_desc desc)
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{
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int error;
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__asm __volatile("invept %[desc], %[type];"
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VMX_SET_ERROR_CODE
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: [error] "=r" (error)
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: [desc] "m" (desc), [type] "r" (type)
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: "memory");
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if (error)
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panic("invept error %d", error);
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}
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#endif
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