26 Sep, 2011
2 commits
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The vmexit tracepoints format the exit_reason to make it human-readable.
Since the exit_reason depends on the instruction set (vmx or svm),
formatting is handled with ftrace_print_symbols_seq() by referring to
the appropriate exit reason table.However, the ftrace_print_symbols_seq() function is not meant to be used
directly in tracepoints since it does not export the formatting table
which userspace tools like trace-cmd and perf use to format traces.In practice perf dies when formatting vmexit-related events and
trace-cmd falls back to printing the numeric value (with extra
formatting code in the kvm plugin to paper over this limitation). Other
userspace consumers of vmexit-related tracepoints would be in similar
trouble.To avoid significant changes to the kvm_exit tracepoint, this patch
moves the vmx and svm exit reason tables into arch/x86/kvm/trace.h and
selects the right table with __print_symbolic() depending on the
instruction set. Note that __print_symbolic() is designed for exporting
the formatting table to userspace and allows trace-cmd and perf to work.Signed-off-by: Stefan Hajnoczi
Signed-off-by: Avi Kivity -
The kvm_exit tracepoint recently added the isa argument to aid decoding
exit_reason. The semantics of exit_reason depend on the instruction set
(vmx or svm) and the isa argument allows traces to be analyzed on other
machines.Add the isa argument to kvm_nested_vmexit and kvm_nested_vmexit_inject
so these tracepoints can also be self-describing.Signed-off-by: Stefan Hajnoczi
Signed-off-by: Avi Kivity
24 Jul, 2011
1 commit
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Add tracepoints to trace mmio page fault
Signed-off-by: Xiao Guangrong
Signed-off-by: Avi Kivity
12 Jul, 2011
2 commits
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This saves a lot of pointless casts x86_emulate_ctxt and decode_cache.
Signed-off-by: Avi Kivity
Signed-off-by: Marcelo Tosatti -
The name eip conflicts with a field of the same name in x86_emulate_ctxt,
which we plan to fold decode_cache into.The name _eip is unfortunate, but what's really needed is a refactoring
here, not a better name.Signed-off-by: Avi Kivity
Signed-off-by: Marcelo Tosatti
10 Mar, 2011
1 commit
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Acked-by: Avi Kivity
Signed-off-by: David Sharp
LKML-Reference:
Signed-off-by: Steven Rostedt
12 Jan, 2011
2 commits
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The exit reason alone is insufficient to understand exactly why an exit
occured; add ISA-specific trace parameters for additional information.Because fetching these parameters is expensive on vmx, and because these
parameters are fetched even if tracing is disabled, we fetch the
parameters via a callback instead of as traditional trace arguments.Signed-off-by: Avi Kivity
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exit_reason's meaning depend on the instruction set; record it so a trace
taken on one machine can be interpreted on another.Signed-off-by: Avi Kivity
17 May, 2010
4 commits
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Log emulated instructions in ftrace, especially if they failed.
Signed-off-by: Avi Kivity
Signed-off-by: Marcelo Tosatti -
Often an exception can help point out where things start to go wrong.
Signed-off-by: Avi Kivity
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Reading rip is expensive on vmx, so move it inside the tracepoint so we only
incur the cost if tracing is enabled.Signed-off-by: Avi Kivity
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This patch does:
- no need call tracepoint_synchronize_unregister() when kvm module
is unloaded since ftrace can handle it- cleanup ftrace's macro
Signed-off-by: Xiao Guangrong
Signed-off-by: Avi Kivity
25 Apr, 2010
2 commits
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This patch adds a tracepoint to get information about the
most important intercept bitmasks from the nested vmcb.Signed-off-by: Joerg Roedel
Signed-off-by: Avi Kivity -
The tracing infrastructure adds its own newlines. Remove
them from the trace point printk format strings.Signed-off-by: Joerg Roedel
Signed-off-by: Avi Kivity
01 Mar, 2010
3 commits
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Record failed msrs reads and writes, and the fact that they failed as well.
Signed-off-by: Avi Kivity
Signed-off-by: Marcelo Tosatti -
- data is 64 bits wide, not unsigned long
- rw is confusingly namedSigned-off-by: Avi Kivity
Signed-off-by: Marcelo Tosatti -
Minimum HYPER-V implementation should have GUEST_OS_ID, HYPERCALL and
VP_INDEX MSRs.[avi: fix build on i386]
Signed-off-by: Gleb Natapov
Signed-off-by: Vadim Rozenfeld
Signed-off-by: Avi Kivity
03 Dec, 2009
6 commits
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This patch adds a tracepoint for the event that the guest
executed the SKINIT instruction. This information is
important because SKINIT is an SVM extenstion not yet
implemented by nested SVM and we may need this information
for debugging hypervisors that do not yet run on nested SVM.Signed-off-by: Joerg Roedel
Signed-off-by: Marcelo Tosatti -
This patch adds a tracepoint for the event that the guest
executed the INVLPGA instruction.Signed-off-by: Joerg Roedel
Signed-off-by: Marcelo Tosatti -
This patch adds a special tracepoint for the event that a
nested #vmexit is injected because kvm wants to inject an
interrupt into the guest.Signed-off-by: Joerg Roedel
Signed-off-by: Marcelo Tosatti -
This patch adds a tracepoint for a nested #vmexit that gets
re-injected to the guest.Signed-off-by: Joerg Roedel
Signed-off-by: Marcelo Tosatti -
This patch adds a tracepoint for every #vmexit we get from a
nested guest.Signed-off-by: Joerg Roedel
Signed-off-by: Marcelo Tosatti -
This patch adds a dedicated kvm tracepoint for a nested
vmrun.Signed-off-by: Joerg Roedel
Signed-off-by: Marcelo Tosatti
10 Sep, 2009
3 commits
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Add tracepoint in msi/ioapic/pic set_irq() functions,
in IPI sending and in the point where IRQ is placed into
apic's IRR.Signed-off-by: Gleb Natapov
Signed-off-by: Avi Kivity -
Signed-off-by: Avi Kivity
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This allows use of the powerful ftrace infrastructure.
See Documentation/trace/ for usage information.
[avi, stephen: various build fixes]
[sheng: fix control register breakage]Signed-off-by: Marcelo Tosatti
Signed-off-by: Stephen Rothwell
Signed-off-by: Sheng Yang
Signed-off-by: Avi Kivity
