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authorIngo Molnar <mingo@elte.hu>2007-02-19 07:37:47 -0500
committerAvi Kivity <avi@qumranet.com>2007-03-04 04:12:40 -0500
commitc21415e84334af679630f6450ceb8929a5234fad (patch)
tree6f9ce30c9fd97a3fc94e79e1450fda86f612b56e /include
parent102d8325a1d2f266d3d0a03fdde948544e72c12d (diff)
KVM: Add host hypercall support for vmx
Signed-off-by: Avi Kivity <avi@qumranet.com>
Diffstat (limited to 'include')
-rw-r--r--include/linux/kvm_para.h18
1 files changed, 18 insertions, 0 deletions
diff --git a/include/linux/kvm_para.h b/include/linux/kvm_para.h
index 74be5c1002ec..3b292565a693 100644
--- a/include/linux/kvm_para.h
+++ b/include/linux/kvm_para.h
@@ -52,4 +52,22 @@ struct kvm_vcpu_para_state {
52 52
53#define KVM_EINVAL 1 53#define KVM_EINVAL 1
54 54
55/*
56 * Hypercall calling convention:
57 *
58 * Each hypercall may have 0-6 parameters.
59 *
60 * 64-bit hypercall index is in RAX, goes from 0 to __NR_hypercalls-1
61 *
62 * 64-bit parameters 1-6 are in the standard gcc x86_64 calling convention
63 * order: RDI, RSI, RDX, RCX, R8, R9.
64 *
65 * 32-bit index is EBX, parameters are: EAX, ECX, EDX, ESI, EDI, EBP.
66 * (the first 3 are according to the gcc regparm calling convention)
67 *
68 * No registers are clobbered by the hypercall, except that the
69 * return value is in RAX.
70 */
71#define __NR_hypercalls 0
72
55#endif 73#endif