[RFC PATCH 0/2] lib: sbi_pmu: Add PMU snapshot extension

Inochi Amaoto inochiama at outlook.com
Tue Jan 9 03:23:55 PST 2024


Although PMU snapshot extension is not very useful for normal use,
it can provide a recoverable snapshot for PMU system. It is useful
for KVM VMs, especially for VM snapshot.

Add the PMU snapshot function.

Inochi Amaoto (2):
  lib: sbi: Add shared memory region support
  lib: sbi_pmu: Add PMU snapshot implementation

 include/sbi/sbi_bitops.h |   3 +
 include/sbi/sbi_pmu.h    |   4 ++
 include/sbi/sbi_shm.h    | 129 +++++++++++++++++++++++++++++++++++
 lib/sbi/objects.mk       |   1 +
 lib/sbi/sbi_ecall_pmu.c  |   3 +-
 lib/sbi/sbi_pmu.c        | 143 +++++++++++++++++++++++++++++++++++++--
 lib/sbi/sbi_shm.c        | 114 +++++++++++++++++++++++++++++++
 7 files changed, 390 insertions(+), 7 deletions(-)
 create mode 100644 include/sbi/sbi_shm.h
 create mode 100644 lib/sbi/sbi_shm.c

--
2.43.0




More information about the opensbi mailing list