[PATCH v2 0/3] perf/amd/ibs: Assorted fixes

[Ravi Bangoria]

#1 Set IBS MSRs in syscore->resume() callback
#2 Fix kernel address leak through REGS_USER and REGS_INTR
#3 Fix races by reducing SW states when IBS_CAPS_DIS is present

v1: https://lore.kernel.org/r/20261015060430.5877-1-ravi.bangoria@xxxxxxx
v1->v2:
- Use interrupt registers when preparing REGS_USER and REGS_INTR. In
  addition to fixing the kernel address leak, this change also ensures
  GPR snapshot consistency, which resolves the DWARF unwinding issue
  with IBS [1].

[1] https://lore.kernel.org/r/CAPu-DQqF0aF6=GS8Z6KKWeeX_V5LiXeKU_rJQZC+uGg8zuTPNw@xxxxxxxxxxxxxx 

Ravi Bangoria (3):
  perf/amd/ibs: Reset CPU0 IBS state on syscore resume
  perf/amd/ibs: Fix kernel address leak via REGS_USER and REGS_INTR
  perf/amd/ibs: Simplify event state handling with IBS_CAPS_DIS

 arch/x86/events/amd/ibs.c  | 197 ++++++++++++++++++++++++++++++++-----
 include/linux/perf_event.h |   6 ++
 kernel/events/core.c       |  10 +-
 3 files changed, 184 insertions(+), 29 deletions(-)

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2.55.0