ref: 595fbddb1c9e152d9080d7b0faa301709fa6466d
dir: /sys/src/9/xen/xen-public/hvm/hvm_info_table.h/
/******************************************************************************
* hvm/hvm_info_table.h
*
* HVM parameter and information table, written into guest memory map.
*
* 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.
*/
#ifndef __XEN_PUBLIC_HVM_HVM_INFO_TABLE_H__
#define __XEN_PUBLIC_HVM_HVM_INFO_TABLE_H__
#define HVM_INFO_PFN 0x09F
#define HVM_INFO_OFFSET 0x800
#define HVM_INFO_PADDR ((HVM_INFO_PFN << 12) + HVM_INFO_OFFSET)
/* Maximum we can support with current vLAPIC ID mapping. */
#define HVM_MAX_VCPUS 128
struct hvm_info_table {
char signature[8]; /* "HVM INFO" */
uint32_t length;
uint8_t checksum;
/* Should firmware build APIC descriptors (APIC MADT / MP BIOS)? */
uint8_t apic_mode;
/* How many CPUs does this domain have? */
uint32_t nr_vcpus;
/*
* MEMORY MAP provided by HVM domain builder.
* Notes:
* 1. page_to_phys(x) = x << 12
* 2. If a field is zero, the corresponding range does not exist.
*/
/*
* 0x0 to page_to_phys(low_mem_pgend)-1:
* RAM below 4GB (except for VGA hole 0xA0000-0xBFFFF)
*/
uint32_t low_mem_pgend;
/*
* page_to_phys(reserved_mem_pgstart) to 0xFFFFFFFF:
* Reserved for special memory mappings
*/
uint32_t reserved_mem_pgstart;
/*
* 0x100000000 to page_to_phys(high_mem_pgend)-1:
* RAM above 4GB
*/
uint32_t high_mem_pgend;
/* Bitmap of which CPUs are online at boot time. */
uint8_t vcpu_online[(HVM_MAX_VCPUS + 7)/8];
};
#endif /* __XEN_PUBLIC_HVM_HVM_INFO_TABLE_H__ */