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/* SPDX-License-Identifier: GPL-2.0-or-later */
/******************************************************************************
* include/asm-x86/mem_access.h
*
* Memory access support.
*
* Copyright (c) 2011 GridCentric Inc. (Andres Lagar-Cavilla)
* Copyright (c) 2007 Advanced Micro Devices (Wei Huang)
* Parts of this code are Copyright (c) 2006-2007 by XenSource Inc.
* Parts of this code are Copyright (c) 2006 by Michael A Fetterman
* Parts based on earlier work by Michael A Fetterman, Ian Pratt et al.
*/
#ifndef __ASM_X86_MEM_ACCESS_H__
#define __ASM_X86_MEM_ACCESS_H__
/*
* Setup vm_event request based on the access (gla is -1ull if not available).
* Handles the rw2rx conversion. Boolean return value indicates if event type
* is syncronous (aka. requires vCPU pause). If the req_ptr has been populated,
* then the caller should use monitor_traps to send the event on the MONITOR
* ring. Once having released get_gfn* locks caller must also xfree the
* request.
*/
bool p2m_mem_access_check(paddr_t gpa, unsigned long gla,
struct npfec npfec,
struct vm_event_st **req_ptr);
/* Check for emulation and mark vcpu for skipping one instruction
* upon rescheduling if required. */
bool p2m_mem_access_emulate_check(struct vcpu *v,
const struct vm_event_st *rsp);
/* Sanity check for mem_access hardware support */
bool p2m_mem_access_sanity_check(const struct domain *d);
int p2m_set_suppress_ve(struct domain *d, gfn_t gfn, bool suppress_ve,
unsigned int altp2m_idx);
struct xen_hvm_altp2m_suppress_ve_multi;
int p2m_set_suppress_ve_multi(struct domain *d,
struct xen_hvm_altp2m_suppress_ve_multi *suppress_ve);
int p2m_get_suppress_ve(struct domain *d, gfn_t gfn, bool *suppress_ve,
unsigned int altp2m_idx);
#endif /*__ASM_X86_MEM_ACCESS_H__ */
/*
* Local variables:
* mode: C
* c-file-style: "BSD"
* c-basic-offset: 4
* indent-tabs-mode: nil
* End:
*/
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