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KVM: Support mixed endian machines

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Currently kvmtrace is not portable. This will prevent from copying a
trace file from big-endian target to little-endian workstation for analysis.
In the patch, kernel outputs metadata containing a magic number to trace
log, and changes 64-bit words to be u64 instead of a pair of u32s.

Signed-off-by: Tan Li <li.tan@intel.com>
Acked-by: Jerone Young <jyoung5@us.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
This commit is contained in:
Tan, Li 2008-05-23 14:54:09 +08:00 • committed by Avi Kivity
parent 25be46080f
commit 9ef621d3be
2 changed files with 14 additions and 8 deletions
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4
include/linux/kvm.h
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@ -318,14 +318,14 @@ struct kvm_trace_rec {
__u32 vcpu_id;
union {
struct {
__u32 cycle_lo, cycle_hi;
__u64 cycle_u64;
__u32 extra_u32[KVM_TRC_EXTRA_MAX];
} cycle;
struct {
__u32 extra_u32[KVM_TRC_EXTRA_MAX];
} nocycle;
} u;
};
} __attribute__((packed));
#define KVMIO 0xAE