1#ifndef _LINUX_LGUEST_LAUNCHER 2#define _LINUX_LGUEST_LAUNCHER 3/* Everything the "lguest" userspace program needs to know. */ 4#include <linux/types.h> 5 6/*D:010 7 * Drivers 8 * 9 * The Guest needs devices to do anything useful. Since we don't let it touch 10 * real devices (think of the damage it could do!) we provide virtual devices. 11 * We emulate a PCI bus with virtio devices on it; we used to have our own 12 * lguest bus which was far simpler, but this tests the virtio 1.0 standard. 13 * 14 * Virtio devices are also used by kvm, so we can simply reuse their optimized 15 * device drivers. And one day when everyone uses virtio, my plan will be 16 * complete. Bwahahahah! 17 */ 18 19/* Write command first word is a request. */ 20enum lguest_req 21{ 22 LHREQ_INITIALIZE, /* + base, pfnlimit, start */ 23 LHREQ_GETDMA, /* No longer used */ 24 LHREQ_IRQ, /* + irq */ 25 LHREQ_BREAK, /* No longer used */ 26 LHREQ_EVENTFD, /* No longer used. */ 27 LHREQ_GETREG, /* + offset within struct pt_regs (then read value). */ 28 LHREQ_SETREG, /* + offset within struct pt_regs, value. */ 29 LHREQ_TRAP, /* + trap number to deliver to guest. */ 30}; 31 32/* 33 * This is what read() of the lguest fd populates. trap == 34 * LGUEST_TRAP_ENTRY for an LHCALL_NOTIFY (addr is the 35 * argument), 14 for a page fault in the MMIO region (addr is 36 * the trap address, insn is the instruction), or 13 for a GPF 37 * (insn is the instruction). 38 */ 39struct lguest_pending { 40 __u8 trap; 41 __u8 insn[7]; 42 __u32 addr; 43}; 44#endif /* _LINUX_LGUEST_LAUNCHER */ 45