On Mon, 10 Oct 2022 15:29:38 -0700 ira.we...@intel.com wrote: > From: Ira Weiny <ira.we...@intel.com> > > CXL Event records inform the OS of various CXL device events. Thus far CXL > memory devices are emulated and therefore don't naturally have events which > will occur. > > Add mock events and a HMP trigger mechanism to facilitate guest OS testing of > event support. > > This support requires a follow on version of the event patch set. The RFC was > submitted and discussed here: > > > https://lore.kernel.org/linux-cxl/20220813053243.757363-1-ira.we...@intel.com/ > > I'll post the lore link to the new version shortly. > > Instructions for running this test. > > Add qmp option to qemu: > > <host> $ qemu-system-x86_64 ... -qmp > unix:/tmp/run_qemu_qmp_0,server,nowait ... > > OR > > <host> $ run_qemu.sh ... --qmp ... > > Enable tracing of events within the guest: > > <guest> $ echo "" > /sys/kernel/tracing/trace > <guest> $ echo 1 > /sys/kernel/tracing/events/cxl/enable > <guest> $ echo 1 > /sys/kernel/tracing/tracing_on > > Trigger event generation and interrupts in the host: > > <host> $ echo "cxl_event_inject cxl-devX" | qmp-shell -H > /tmp/run_qemu_qmp_0 > > Where X == one of the memory devices; cxl-dev0 should work. > > View events on the guest: > > <guest> $ cat /sys/kernel/tracing/trace
Hi Ira, Why is this an RFC rather than a patch set to apply? It's useful to have that in the cover letter so we can focus on what you want comments on (rather than simply review). Thanks, Jonathan > > > Ira Weiny (6): > qemu/bswap: Add const_le64() > qemu/uuid: Add UUID static initializer > hw/cxl/cxl-events: Add CXL mock events > hw/cxl/mailbox: Wire up get/clear event mailbox commands > hw/cxl/cxl-events: Add event interrupt support > hw/cxl/mailbox: Wire up Get/Set Event Interrupt policy > > hmp-commands.hx | 14 ++ > hw/cxl/cxl-device-utils.c | 1 + > hw/cxl/cxl-events.c | 330 ++++++++++++++++++++++++++++++++++++ > hw/cxl/cxl-host-stubs.c | 5 + > hw/cxl/cxl-mailbox-utils.c | 224 +++++++++++++++++++++--- > hw/cxl/meson.build | 1 + > hw/mem/cxl_type3.c | 7 +- > include/hw/cxl/cxl_device.h | 22 +++ > include/hw/cxl/cxl_events.h | 194 +++++++++++++++++++++ > include/qemu/bswap.h | 10 ++ > include/qemu/uuid.h | 12 ++ > include/sysemu/sysemu.h | 3 + > 12 files changed, 802 insertions(+), 21 deletions(-) > create mode 100644 hw/cxl/cxl-events.c > create mode 100644 include/hw/cxl/cxl_events.h > > > base-commit: 6f7f81898e4437ea544ee4ca24bef7ec543b1f06
