BMC/Intel-BMC/linux.git/arch/x86/kvm/trace.h, branch dev

KVM: x86: save/load state on SMM switch

2015-06-04T14:17:46+00:00

The big ugly one. This patch adds support for switching in and out of system management mode, respectively upon receiving KVM_REQ_SMI and upon executing a RSM instruction. Both 32- and 64-bit formats are supported for the SMM state save area. Reviewed-by: Radim Krčmář Signed-off-by: Paolo Bonzini

KVM: VMX: Add PML support in VMX

2015-01-30T08:39:54+00:00

This patch adds PML support in VMX. A new module parameter 'enable_pml' is added to allow user to enable/disable it manually. Signed-off-by: Kai Huang Reviewed-by: Xiao Guangrong Signed-off-by: Paolo Bonzini

KVM: x86: add tracepoint to wait_lapic_expire

2015-01-08T21:48:01+00:00

Add tracepoint to wait_lapic_expire. Signed-off-by: Marcelo Tosatti [Remind reader if early or late. - Paolo] Signed-off-by: Paolo Bonzini

kvm: x86: add trace event for pvclock updates

2014-11-08T07:20:55+00:00

The new trace event records: * the id of vcpu being updated * the pvclock_vcpu_time_info struct being written to guest memory This is useful for debugging pvclock bugs, such as the bug fixed by "[PATCH] kvm: x86: Fix kvm clock versioning.". Signed-off-by: David Matlack Signed-off-by: Paolo Bonzini

KVM: x86: make apic_accept_irq tracepoint more generic

2014-09-11T09:51:02+00:00

Initially the tracepoint was added only to the APIC_DM_FIXED case, also because it reported coalesced interrupts that only made sense for that case. However, the coalesced argument is not used anymore and tracing other delivery modes is useful, so hoist the call out of the switch statement. Signed-off-by: Paolo Bonzini

kvm: x86: fix tracing for 32-bit

2014-08-25T14:08:21+00:00

Fix commit 7b46268d29543e313e731606d845e65c17f232e4, which mistakenly included the new tracepoint under #ifdef CONFIG_X86_64. Reported-by: Sabrina Dubroca Signed-off-by: Paolo Bonzini

KVM: trace kvm_ple_window grow/shrink

2014-08-21T16:45:23+00:00

Tracepoint for dynamic PLE window, fired on every potential change. Signed-off-by: Radim Krčmář Signed-off-by: Paolo Bonzini

KVM: emulate: put pointers in the fetch_cache

2014-07-11T07:14:03+00:00

This simplifies the code a bit, especially the overflow checks. Signed-off-by: Paolo Bonzini

KVM: x86: improve the usability of the 'kvm_pio' tracepoint

2014-05-05T20:42:05+00:00

This patch moves the 'kvm_pio' tracepoint to emulator_pio_in_emulated() and emulator_pio_out_emulated(), and it adds an argument (a pointer to the 'pio_data'). A single 8-bit or 16-bit or 32-bit data item is fetched from 'pio_data' (depending on 'size'), and the value is included in the trace record ('val'). If 'count' is greater than one, this is indicated by the string "(...)" in the trace output. Signed-off-by: Ulrich Obergfell Reviewed-by: Xiao Guangrong Signed-off-by: Paolo Bonzini

kvm: Add a tracepoint write_tsc_offset

2013-06-27T11:20:51+00:00

Add a tracepoint write_tsc_offset for tracing TSC offset change. We want to merge ftrace's trace data of guest OSs and the host OS using TSC for timestamp in chronological order. We need "TSC offset" values for each guest when merge those because the TSC value on a guest is always the host TSC plus guest's TSC offset. If we get the TSC offset values, we can calculate the host TSC value for each guest events from the TSC offset and the event TSC value. The host TSC values of the guest events are used when we want to merge trace data of guests and the host in chronological order. (Note: the trace_clock of both the host and the guest must be set x86-tsc in this case) This tracepoint also records vcpu_id which can be used to merge trace data for SMP guests. A merge tool will read TSC offset for each vcpu, then the tool converts guest TSC values to host TSC values for each vcpu. TSC offset is stored in the VMCS by vmx_write_tsc_offset() or vmx_adjust_tsc_offset(). KVM executes the former function when a guest boots. The latter function is executed when kvm clock is updated. Only host can read TSC offset value from VMCS, so a host needs to output TSC offset value when TSC offset is changed. Since the TSC offset is not often changed, it could be overwritten by other frequent events while tracing. To avoid that, I recommend to use a special instance for getting this event: 1. set a instance before booting a guest # cd /sys/kernel/debug/tracing/instances # mkdir tsc_offset # cd tsc_offset # echo x86-tsc > trace_clock # echo 1 > events/kvm/kvm_write_tsc_offset/enable 2. boot a guest Signed-off-by: Yoshihiro YUNOMAE Cc: Joerg Roedel Cc: Marcelo Tosatti Cc: Gleb Natapov Cc: Thomas Gleixner Cc: Ingo Molnar Cc: "H. Peter Anvin" Acked-by: Marcelo Tosatti Signed-off-by: Gleb Natapov