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authorAdrian Hunter <adrian.hunter@intel.com>2022-01-24 10:41:39 +0200
committerArnaldo Carvalho de Melo <acme@redhat.com>2022-02-15 17:05:44 -0300
commit2750af50a360b52c6df1f5652ae728878bececc0 (patch)
tree3afaee86ef68869d7bec44c5c640056334b2cdec /fs/open.c
parent6816c25478f0617b1f0008b3db3f5370757d33a8 (diff)
downloadlinux-2750af50a360b52c6df1f5652ae728878bececc0.tar.gz
perf intel-pt: pkt-decoder: Add CFE and EVD packets
As of Intel SDM (https://www.intel.com/sdm) version 076, there is a new
Intel PT feature called Event Trace which requires 2 new packets CFE and
EVD. Add them to the packet decoder and packet decoder test.

Committer notes:

I got the "Intel® 64 and IA-32 architectures software developer’s manual
combined volumes: 1, 2A, 2B, 2C, 2D, 3A, 3B, 3C, 3D, and 4" PDF at:

  https://cdrdv2.intel.com/v1/dl/getContent/671200

And these new packets are described in page 3951:

<quote>
32.2.4

Event Trace is a capability that exposes details about the asynchronous
events, when they are generated, and when their corresponding software
event handler completes execution. These include:

o Interrupts, including NMI and SMI, including the interrupt vector when
defined.

o Faults, exceptions including the fault vector.

— Page faults additionally include the page fault address, when in context.

o Event handler returns, including IRET and RSM.

o VM exits and VM entries.¹

— VM exits include the values written to the “exit reason” and “exit qualification” VMCS fields.
INIT and SIPI events.

o TSX aborts, including the abort status returned for the RTM instructions.

o Shutdown.

Additionally, it provides indication of the status of the Interrupt Flag
(IF), to indicate when interrupts are masked.
</quote>

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: https://lore.kernel.org/r/20220124084201.2699795-4-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'fs/open.c')
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