This patchset adds support for PCI in the pvpanic driver. The device already got in qemu [1].
v2: - mmio -> MMIO, pci -> PCI suggested by Randy Dunlap. - group pvpanic-common.c and mmio.c in the same module. The intention was to have only one module and the common code splitted up to be re-used by the pvpanic-pci module in the next patch. - add a new patch where add the licenses for the new files (when I moved the code to mmio.c I preserved the original licenses there) - properly clean-up PCI device when driver removed. v3: - drop patch 3 with licenses and add them when creating files - create a new patch (2/3) which allowes multiple pvpanic instances v4: - fix Makefile in patch 1/3 and 3/3 for pvpanic.o as suggested by Arnd v5: - rebase on 5.12 - fix a warning caused by one of the patches v6: - remove pr_fmt as were not used - "remove" functions of type void - moved events/capability per-device structure How to test: Run a VM with latest qemu which has the pvpanic-pci device: qemu-system-aarch64 -device pvpanic-pci Generate a panic in the guest: echo 1 > /proc/sys/kernel/sysrq echo c > /proc/sysrq-trigger Observe in the QMP console the panic events received by the device: {"timestamp": {"seconds": 1613122186, "microseconds": 141729}, "event": "GUEST_PANICKED", "data": {"action": "pause"}} {"timestamp": {"seconds": 1613122186, "microseconds": 141833}, "event": "GUEST_PANICKED", "data": {"action": "poweroff"}} {"timestamp": {"seconds": 1613122186, "microseconds": 141896}, "event": "SHUTDOWN", "data": {"guest": true, "reason": "guest-panic"}} [1] https://github.com/qemu/qemu/commit/9df52f58e76e904fb141b10318362d718f470db2 *** BLURB HERE *** Mihai Carabas (3): misc/pvpanic: split-up generic and platform dependent code misc/pvpanic: probe multiple instances misc/pvpanic: add PCI driver .../ABI/testing/sysfs-bus-pci-devices-pvpanic | 4 +- drivers/misc/Kconfig | 9 +- drivers/misc/Makefile | 2 +- drivers/misc/pvpanic.c | 160 --------------------- drivers/misc/pvpanic/Kconfig | 27 ++++ drivers/misc/pvpanic/Makefile | 8 ++ drivers/misc/pvpanic/pvpanic-mmio.c | 143 ++++++++++++++++++ drivers/misc/pvpanic/pvpanic-pci.c | 121 ++++++++++++++++ drivers/misc/pvpanic/pvpanic.c | 109 ++++++++++++++ drivers/misc/pvpanic/pvpanic.h | 21 +++ 10 files changed, 434 insertions(+), 170 deletions(-) delete mode 100644 drivers/misc/pvpanic.c create mode 100644 drivers/misc/pvpanic/Kconfig create mode 100644 drivers/misc/pvpanic/Makefile create mode 100644 drivers/misc/pvpanic/pvpanic-mmio.c create mode 100644 drivers/misc/pvpanic/pvpanic-pci.c create mode 100644 drivers/misc/pvpanic/pvpanic.c create mode 100644 drivers/misc/pvpanic/pvpanic.h -- 1.8.3.1