81 lines
2.7 KiB
C
81 lines
2.7 KiB
C
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/******************************************************************************
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* mem_event.h
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*
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* Memory event common structures.
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*
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* Copyright (c) 2009 by Citrix Systems, Inc. (Patrick Colp)
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to
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* deal in the Software without restriction, including without limitation the
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* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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* sell copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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#ifndef _XEN_PUBLIC_MEM_EVENT_H
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#define _XEN_PUBLIC_MEM_EVENT_H
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#include "xen.h"
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#include "io/ring.h"
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/* Memory event flags */
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#define MEM_EVENT_FLAG_VCPU_PAUSED (1 << 0)
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#define MEM_EVENT_FLAG_DROP_PAGE (1 << 1)
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#define MEM_EVENT_FLAG_EVICT_FAIL (1 << 2)
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#define MEM_EVENT_FLAG_FOREIGN (1 << 3)
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#define MEM_EVENT_FLAG_DUMMY (1 << 4)
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/* Reasons for the memory event request */
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#define MEM_EVENT_REASON_UNKNOWN 0 /* typical reason */
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#define MEM_EVENT_REASON_VIOLATION 1 /* access violation, GFN is address */
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#define MEM_EVENT_REASON_CR0 2 /* CR0 was hit: gfn is CR0 value */
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#define MEM_EVENT_REASON_CR3 3 /* CR3 was hit: gfn is CR3 value */
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#define MEM_EVENT_REASON_CR4 4 /* CR4 was hit: gfn is CR4 value */
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#define MEM_EVENT_REASON_INT3 5 /* int3 was hit: gla/gfn are RIP */
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#define MEM_EVENT_REASON_SINGLESTEP 6 /* single step was invoked: gla/gfn are RIP */
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typedef struct mem_event_st {
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uint32_t flags;
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uint32_t vcpu_id;
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uint64_t gfn;
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uint64_t offset;
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uint64_t gla; /* if gla_valid */
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uint32_t p2mt;
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uint16_t access_r:1;
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uint16_t access_w:1;
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uint16_t access_x:1;
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uint16_t gla_valid:1;
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uint16_t available:12;
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uint16_t reason;
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} mem_event_request_t, mem_event_response_t;
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DEFINE_RING_TYPES(mem_event, mem_event_request_t, mem_event_response_t);
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#endif
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/*
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* Local variables:
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* mode: C
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* c-set-style: "BSD"
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* c-basic-offset: 4
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* tab-width: 4
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* indent-tabs-mode: nil
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* End:
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*/
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