1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 /****************************************************************************** 3 * include/asm-x86/mem_access.h 4 * 5 * Memory access support. 6 * 7 * Copyright (c) 2011 GridCentric Inc. (Andres Lagar-Cavilla) 8 * Copyright (c) 2007 Advanced Micro Devices (Wei Huang) 9 * Parts of this code are Copyright (c) 2006-2007 by XenSource Inc. 10 * Parts of this code are Copyright (c) 2006 by Michael A Fetterman 11 * Parts based on earlier work by Michael A Fetterman, Ian Pratt et al. 12 */ 13 14 #ifndef __ASM_X86_MEM_ACCESS_H__ 15 #define __ASM_X86_MEM_ACCESS_H__ 16 17 /* 18 * Setup vm_event request based on the access (gla is -1ull if not available). 19 * Handles the rw2rx conversion. Boolean return value indicates if event type 20 * is syncronous (aka. requires vCPU pause). If the req_ptr has been populated, 21 * then the caller should use monitor_traps to send the event on the MONITOR 22 * ring. Once having released get_gfn* locks caller must also xfree the 23 * request. 24 */ 25 bool p2m_mem_access_check(paddr_t gpa, unsigned long gla, 26 struct npfec npfec, 27 struct vm_event_st **req_ptr); 28 29 /* Check for emulation and mark vcpu for skipping one instruction 30 * upon rescheduling if required. */ 31 bool p2m_mem_access_emulate_check(struct vcpu *v, 32 const struct vm_event_st *rsp); 33 34 /* Sanity check for mem_access hardware support */ 35 bool p2m_mem_access_sanity_check(const struct domain *d); 36 37 int p2m_set_suppress_ve(struct domain *d, gfn_t gfn, bool suppress_ve, 38 unsigned int altp2m_idx); 39 40 struct xen_hvm_altp2m_suppress_ve_multi; 41 int p2m_set_suppress_ve_multi(struct domain *d, 42 struct xen_hvm_altp2m_suppress_ve_multi *sve); 43 44 int p2m_get_suppress_ve(struct domain *d, gfn_t gfn, bool *suppress_ve, 45 unsigned int altp2m_idx); 46 47 #endif /*__ASM_X86_MEM_ACCESS_H__ */ 48 49 /* 50 * Local variables: 51 * mode: C 52 * c-file-style: "BSD" 53 * c-basic-offset: 4 54 * indent-tabs-mode: nil 55 * End: 56 */ 57