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KVM: Allow userspace to process hypercalls which have no kernel handler

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This is useful for paravirtualized graphics devices, for example.

Signed-off-by: Avi Kivity <avi@qumranet.com>
This commit is contained in:
Avi Kivity 2007-03-04 13:59:30 +02:00
commit b4e63f560b
2 changed files with 26 additions and 2 deletions
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10
include/linux/kvm.h
View file

@ -11,7 +11,7 @@
#include <asm/types.h>
#include <linux/ioctl.h>
#define KVM_API_VERSION 6
#define KVM_API_VERSION 7
/*
* Architectural interrupt line count, and the size of the bitmap needed
@ -41,6 +41,7 @@ enum kvm_exit_reason {
KVM_EXIT_UNKNOWN = 0,
KVM_EXIT_EXCEPTION = 1,
KVM_EXIT_IO = 2,
KVM_EXIT_HYPERCALL = 3,
KVM_EXIT_DEBUG = 4,
KVM_EXIT_HLT = 5,
KVM_EXIT_MMIO = 6,
@ -103,6 +104,13 @@ struct kvm_run {
__u32 len;
__u8 is_write;
} mmio;
/* KVM_EXIT_HYPERCALL */
struct {
__u64 args[6];
__u64 ret;
__u32 longmode;
__u32 pad;
} hypercall;
};
};