diff options
author | Ingo Molnar <mingo@elte.hu> | 2008-10-24 12:48:46 +0200 |
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committer | Ingo Molnar <mingo@elte.hu> | 2008-10-24 12:48:46 +0200 |
commit | 8c82a17e9c924c0e9f13e75e4c2f6bca19a4b516 (patch) | |
tree | d535f46a917e14e90deccb29ad00aac016ad18dd /include/asm-x86/lguest_hcall.h | |
parent | 4ce72a2c063a7fa8e42a9435440ae3364115a58d (diff) | |
parent | 57f8f7b60db6f1ed2c6918ab9230c4623a9dbe37 (diff) |
Merge commit 'v2.6.28-rc1' into sched/urgent
Diffstat (limited to 'include/asm-x86/lguest_hcall.h')
-rw-r--r-- | include/asm-x86/lguest_hcall.h | 71 |
1 files changed, 0 insertions, 71 deletions
diff --git a/include/asm-x86/lguest_hcall.h b/include/asm-x86/lguest_hcall.h deleted file mode 100644 index 8f034ba4b53..00000000000 --- a/include/asm-x86/lguest_hcall.h +++ /dev/null @@ -1,71 +0,0 @@ -/* Architecture specific portion of the lguest hypercalls */ -#ifndef ASM_X86__LGUEST_HCALL_H -#define ASM_X86__LGUEST_HCALL_H - -#define LHCALL_FLUSH_ASYNC 0 -#define LHCALL_LGUEST_INIT 1 -#define LHCALL_SHUTDOWN 2 -#define LHCALL_LOAD_GDT 3 -#define LHCALL_NEW_PGTABLE 4 -#define LHCALL_FLUSH_TLB 5 -#define LHCALL_LOAD_IDT_ENTRY 6 -#define LHCALL_SET_STACK 7 -#define LHCALL_TS 8 -#define LHCALL_SET_CLOCKEVENT 9 -#define LHCALL_HALT 10 -#define LHCALL_SET_PTE 14 -#define LHCALL_SET_PMD 15 -#define LHCALL_LOAD_TLS 16 -#define LHCALL_NOTIFY 17 - -#define LGUEST_TRAP_ENTRY 0x1F - -/* Argument number 3 to LHCALL_LGUEST_SHUTDOWN */ -#define LGUEST_SHUTDOWN_POWEROFF 1 -#define LGUEST_SHUTDOWN_RESTART 2 - -#ifndef __ASSEMBLY__ -#include <asm/hw_irq.h> - -/*G:031 But first, how does our Guest contact the Host to ask for privileged - * operations? There are two ways: the direct way is to make a "hypercall", - * to make requests of the Host Itself. - * - * Our hypercall mechanism uses the highest unused trap code (traps 32 and - * above are used by real hardware interrupts). Fifteen hypercalls are - * available: the hypercall number is put in the %eax register, and the - * arguments (when required) are placed in %edx, %ebx and %ecx. If a return - * value makes sense, it's returned in %eax. - * - * Grossly invalid calls result in Sudden Death at the hands of the vengeful - * Host, rather than returning failure. This reflects Winston Churchill's - * definition of a gentleman: "someone who is only rude intentionally". */ -static inline unsigned long -hcall(unsigned long call, - unsigned long arg1, unsigned long arg2, unsigned long arg3) -{ - /* "int" is the Intel instruction to trigger a trap. */ - asm volatile("int $" __stringify(LGUEST_TRAP_ENTRY) - /* The call in %eax (aka "a") might be overwritten */ - : "=a"(call) - /* The arguments are in %eax, %edx, %ebx & %ecx */ - : "a"(call), "d"(arg1), "b"(arg2), "c"(arg3) - /* "memory" means this might write somewhere in memory. - * This isn't true for all calls, but it's safe to tell - * gcc that it might happen so it doesn't get clever. */ - : "memory"); - return call; -} -/*:*/ - -/* Can't use our min() macro here: needs to be a constant */ -#define LGUEST_IRQS (NR_IRQS < 32 ? NR_IRQS: 32) - -#define LHCALL_RING_SIZE 64 -struct hcall_args { - /* These map directly onto eax, ebx, ecx, edx in struct lguest_regs */ - unsigned long arg0, arg2, arg3, arg1; -}; - -#endif /* !__ASSEMBLY__ */ -#endif /* ASM_X86__LGUEST_HCALL_H */ |