ref: e19308ee166dd085f7773621471a5fc589af45d4
dir: /sys/src/9/xen/xen-public/xencomm.h/
/* * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to * deal in the Software without restriction, including without limitation the * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or * sell copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER * DEALINGS IN THE SOFTWARE. * * Copyright (C) IBM Corp. 2006 */ #ifndef _XEN_XENCOMM_H_ #define _XEN_XENCOMM_H_ /* A xencomm descriptor is a scatter/gather list containing physical * addresses corresponding to a virtually contiguous memory area. The * hypervisor translates these physical addresses to machine addresses to copy * to and from the virtually contiguous area. */ #define XENCOMM_MAGIC 0x58434F4D /* 'XCOM' */ #define XENCOMM_INVALID (~0UL) struct xencomm_desc { uint32_t magic; uint32_t nr_addrs; /* the number of entries in address[] */ uint64_t address[0]; }; #endif /* _XEN_XENCOMM_H_ */