| #ifndef _LINUX_LGUEST_LAUNCHER | |
| #define _LINUX_LGUEST_LAUNCHER | |
| /* Everything the "lguest" userspace program needs to know. */ | |
| #include <linux/types.h> | |
| /*D:010 | |
| * Drivers | |
| * | |
| * The Guest needs devices to do anything useful. Since we don't let it touch | |
| * real devices (think of the damage it could do!) we provide virtual devices. | |
| * We emulate a PCI bus with virtio devices on it; we used to have our own | |
| * lguest bus which was far simpler, but this tests the virtio 1.0 standard. | |
| * | |
| * Virtio devices are also used by kvm, so we can simply reuse their optimized | |
| * device drivers. And one day when everyone uses virtio, my plan will be | |
| * complete. Bwahahahah! | |
| */ | |
| /* Write command first word is a request. */ | |
| enum lguest_req | |
| { | |
| LHREQ_INITIALIZE, /* + base, pfnlimit, start */ | |
| LHREQ_GETDMA, /* No longer used */ | |
| LHREQ_IRQ, /* + irq */ | |
| LHREQ_BREAK, /* No longer used */ | |
| LHREQ_EVENTFD, /* No longer used. */ | |
| LHREQ_GETREG, /* + offset within struct pt_regs (then read value). */ | |
| LHREQ_SETREG, /* + offset within struct pt_regs, value. */ | |
| LHREQ_TRAP, /* + trap number to deliver to guest. */ | |
| }; | |
| /* | |
| * This is what read() of the lguest fd populates. trap == | |
| * LGUEST_TRAP_ENTRY for an LHCALL_NOTIFY (addr is the | |
| * argument), 14 for a page fault in the MMIO region (addr is | |
| * the trap address, insn is the instruction), or 13 for a GPF | |
| * (insn is the instruction). | |
| */ | |
| struct lguest_pending { | |
| __u8 trap; | |
| __u8 insn[7]; | |
| __u32 addr; | |
| }; | |
| #endif /* _LINUX_LGUEST_LAUNCHER */ |