X86PageBranch - combiner for x86 kernel features:

x86 kernel features includes:

  • PTI (Page Table Isolation)

  • IBPB (Indirect Branch Prediction Barrier)

  • IBRS (Indirect Branch Restricted Speculation)

This combiner reads information from debugfs:

Examples

>>> type(dv)
<class 'insights.combiners.x86_page_branch.X86PageBranch'>
>>> dv.pti
1
>>> dv.ibpb
3
>>> dv.ibrs
2
>>> dv.retp
0
Attributes:

pti (int): The result parsed of ‘/sys/kernel/debug/x86/pti_enabled’

ibpb (int): The result parsed of ‘/sys/kernel/debug/x86/ibpb_enabled’

ibrs (int): The result parsed of ‘/sys/kernel/debug/x86/ibrs_enabled’

retp (int): The result parsed of ‘/sys/kernel/debug/x86/retp_enabled’

class insights.combiners.x86_page_branch.X86PageBranch(pti_enabled, ibpb_enabled, ibrs_enabled, retp_enabled)[source]

Bases: object

This combiner provides an interface to the three X86 Page Table/Branch Prediction parsers. If retp_enabled is not available, self.retp is None.