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