mbox series

[v3,0/6] x86/bugs: RSB mitigation fixes and documentation

Message ID cover.1743617897.git.jpoimboe@kernel.org (mailing list archive)
Headers show
Series x86/bugs: RSB mitigation fixes and documentation | expand

Message

Josh Poimboeuf April 2, 2025, 6:19 p.m. UTC 
v3:
- fancy new doc
- more fixes

v2: https://lore.kernel.org/cover.1732219175.git.jpoimboe@kernel.org

Josh Poimboeuf (6):
  x86/bugs: Rename entry_ibpb()
  x86/bugs: Use SBPB in __write_ibpb() if applicable
  x86/bugs: Fix RSB clearing in indirect_branch_prediction_barrier()
  x86/bugs: Don't fill RSB on VMEXIT with eIBRS+retpoline
  x86/bugs: Don't fill RSB on context switch with eIBRS
  x86/bugs: Add RSB mitigation document

 Documentation/admin-guide/hw-vuln/index.rst |   1 +
 Documentation/admin-guide/hw-vuln/rsb.rst   | 241 ++++++++++++++++++++
 arch/x86/entry/entry.S                      |   9 +-
 arch/x86/include/asm/nospec-branch.h        |  12 +-
 arch/x86/kernel/cpu/bugs.c                  | 109 +++------
 arch/x86/mm/tlb.c                           |   6 +-
 6 files changed, 291 insertions(+), 87 deletions(-)
 create mode 100644 Documentation/admin-guide/hw-vuln/rsb.rst