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author | Russell King <rmk@dyn-67.arm.linux.org.uk> | 2009-09-12 07:02:26 -0400 |
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committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2009-09-12 07:02:26 -0400 |
commit | ddd559b13f6d2fe3ad68c4b3f5235fd3c2eae4e3 (patch) | |
tree | d827bca3fc825a0ac33efbcd493713be40fcc812 /arch/x86/include/asm/lguest_hcall.h | |
parent | cf7a2b4fb6a9b86779930a0a123b0df41aa9208f (diff) | |
parent | f17a1f06d2fa93f4825be572622eb02c4894db4e (diff) |
Merge branch 'devel-stable' into devel
Conflicts:
MAINTAINERS
arch/arm/mm/fault.c
Diffstat (limited to 'arch/x86/include/asm/lguest_hcall.h')
-rw-r--r-- | arch/x86/include/asm/lguest_hcall.h | 18 |
1 files changed, 9 insertions, 9 deletions
diff --git a/arch/x86/include/asm/lguest_hcall.h b/arch/x86/include/asm/lguest_hcall.h index d31c4a68407..ba0eed8aa1a 100644 --- a/arch/x86/include/asm/lguest_hcall.h +++ b/arch/x86/include/asm/lguest_hcall.h | |||
@@ -30,27 +30,27 @@ | |||
30 | #include <asm/hw_irq.h> | 30 | #include <asm/hw_irq.h> |
31 | #include <asm/kvm_para.h> | 31 | #include <asm/kvm_para.h> |
32 | 32 | ||
33 | /*G:031 But first, how does our Guest contact the Host to ask for privileged | 33 | /*G:030 |
34 | * But first, how does our Guest contact the Host to ask for privileged | ||
34 | * operations? There are two ways: the direct way is to make a "hypercall", | 35 | * operations? There are two ways: the direct way is to make a "hypercall", |
35 | * to make requests of the Host Itself. | 36 | * to make requests of the Host Itself. |
36 | * | 37 | * |
37 | * We use the KVM hypercall mechanism. Seventeen hypercalls are | 38 | * We use the KVM hypercall mechanism, though completely different hypercall |
38 | * available: the hypercall number is put in the %eax register, and the | 39 | * numbers. Seventeen hypercalls are available: the hypercall number is put in |
39 | * arguments (when required) are placed in %ebx, %ecx, %edx and %esi. | 40 | * the %eax register, and the arguments (when required) are placed in %ebx, |
40 | * If a return value makes sense, it's returned in %eax. | 41 | * %ecx, %edx and %esi. If a return value makes sense, it's returned in %eax. |
41 | * | 42 | * |
42 | * Grossly invalid calls result in Sudden Death at the hands of the vengeful | 43 | * Grossly invalid calls result in Sudden Death at the hands of the vengeful |
43 | * Host, rather than returning failure. This reflects Winston Churchill's | 44 | * Host, rather than returning failure. This reflects Winston Churchill's |
44 | * definition of a gentleman: "someone who is only rude intentionally". */ | 45 | * definition of a gentleman: "someone who is only rude intentionally". |
45 | /*:*/ | 46 | :*/ |
46 | 47 | ||
47 | /* Can't use our min() macro here: needs to be a constant */ | 48 | /* Can't use our min() macro here: needs to be a constant */ |
48 | #define LGUEST_IRQS (NR_IRQS < 32 ? NR_IRQS: 32) | 49 | #define LGUEST_IRQS (NR_IRQS < 32 ? NR_IRQS: 32) |
49 | 50 | ||
50 | #define LHCALL_RING_SIZE 64 | 51 | #define LHCALL_RING_SIZE 64 |
51 | struct hcall_args { | 52 | struct hcall_args { |
52 | /* These map directly onto eax, ebx, ecx, edx and esi | 53 | /* These map directly onto eax/ebx/ecx/edx/esi in struct lguest_regs */ |
53 | * in struct lguest_regs */ | ||
54 | unsigned long arg0, arg1, arg2, arg3, arg4; | 54 | unsigned long arg0, arg1, arg2, arg3, arg4; |
55 | }; | 55 | }; |
56 | 56 | ||