/* * Things the lguest guest needs to know. Note: like all lguest interfaces, * this is subject to wild and random change between versions. */ #ifndef _LINUX_LGUEST_H #define _LINUX_LGUEST_H #ifndef __ASSEMBLY__ #include <linux/time.h> #include <asm/irq.h> #include <asm/lguest_hcall.h> #define LG_CLOCK_MIN_DELTA 100UL #define LG_CLOCK_MAX_DELTA ULONG_MAX /*G:031 * The second method of communicating with the Host is to via "struct * lguest_data". Once the Guest's initialization hypercall tells the Host where * this is, the Guest and Host both publish information in it. :*/ struct lguest_data { /* * 512 == enabled (same as eflags in normal hardware). The Guest * changes interrupts so often that a hypercall is too slow. */ unsigned int irq_enabled; /* Fine-grained interrupt disabling by the Guest */ DECLARE_BITMAP(blocked_interrupts, LGUEST_IRQS); /* * The Host writes the virtual address of the last page fault here, * which saves the Guest a hypercall. CR2 is the native register where * this address would normally be found. */ unsigned long cr2; /* Wallclock time set by the Host. */ struct timespec time; /* * Interrupt pending set by the Host. The Guest should do a hypercall * if it re-enables interrupts and sees this set (to X86_EFLAGS_IF). */ int irq_pending; /* * Async hypercall ring. Instead of directly making hypercalls, we can * place them in here for processing the next time the Host wants. * This batching can be quite efficient. */ /* 0xFF == done (set by Host), 0 == pending (set by Guest). */ u8 hcall_status[LHCALL_RING_SIZE]; /* The actual registers for the hypercalls. */ struct hcall_args hcalls[LHCALL_RING_SIZE]; /* Fields initialized by the Host at boot: */ /* Memory not to try to access */ unsigned long reserve_mem; /* KHz for the TSC clock. */ u32 tsc_khz; /* Fields initialized by the Guest at boot: */ /* Instruction to suppress interrupts even if enabled */ unsigned long noirq_iret; /* Address above which page tables are all identical. */ unsigned long kernel_address; /* The vector to try to use for system calls (0x40 or 0x80). */ unsigned int syscall_vec; }; extern struct lguest_data lguest_data; #endif /* __ASSEMBLY__ */ #endif /* _LINUX_LGUEST_H */Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Rusty Russell | 103 | 91.15% | 9 | 75.00% |
| Jes Sorensen | 10 | 8.85% | 3 | 25.00% |
| Total | 113 | 100.00% | 12 | 100.00% |