diff options
author | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2013-07-27 22:15:01 +0000 |
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committer | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2013-07-27 22:15:01 +0000 |
commit | 7996a3d79d55b7f879dfd62e202bbfe2963718d3 (patch) | |
tree | 8d9f6759fec4099b9be503c11c7ed174f7204980 /libdde-linux26/contrib/include/linux/lguest.h | |
parent | 4fbe7358c7747a9165f776eb19addbb9baf7def2 (diff) |
really properly move files
Diffstat (limited to 'libdde-linux26/contrib/include/linux/lguest.h')
-rw-r--r-- | libdde-linux26/contrib/include/linux/lguest.h | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/libdde-linux26/contrib/include/linux/lguest.h b/libdde-linux26/contrib/include/linux/lguest.h new file mode 100644 index 00000000..175e63f4 --- /dev/null +++ b/libdde-linux26/contrib/include/linux/lguest.h @@ -0,0 +1,60 @@ +/* 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:032 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; + + /* 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; + /* Page where the top-level pagetable is */ + unsigned long pgdir; + +/* Fields initialized by the Guest at boot: */ + /* Instruction range to suppress interrupts even if enabled */ + unsigned long noirq_start, noirq_end; + /* 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 */ |