From: Ira Weiny <ira.weiny@intel.com>
To: Michael Tsirkin <mst@redhat.com>,
Ben Widawsky <bwidawsk@kernel.org>,
Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: <qemu-devel@nongnu.org>, <linux-cxl@vger.kernel.org>
Subject: Re: [RFC PATCH 0/6] QEMU CXL Provide mock CXL events and irq support
Date: Mon, 10 Oct 2022 15:45:30 -0700 [thread overview]
Message-ID: <Y0Sgiq+WMwOmqToe@iweiny-desk3> (raw)
In-Reply-To: <20221010222944.3923556-1-ira.weiny@intel.com>
On Mon, Oct 10, 2022 at 03:29:38PM -0700, Ira wrote:
> From: Ira Weiny <ira.weiny@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.weiny@intel.com/
>
> I'll post the lore link to the new version shortly.
Kernel support now posted here:
https://lore.kernel.org/all/20221010224131.1866246-1-ira.weiny@intel.com/
Ira
>
> 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
>
>
> 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
> --
> 2.37.2
>
next prev parent reply other threads:[~2022-10-10 22:46 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-10-10 22:29 [RFC PATCH 0/6] QEMU CXL Provide mock CXL events and irq support ira.weiny
2022-10-10 22:29 ` [RFC PATCH 1/6] qemu/bswap: Add const_le64() ira.weiny
2022-10-11 9:03 ` Jonathan Cameron
2022-10-13 22:52 ` Ira Weiny
2022-10-11 9:48 ` Peter Maydell
2022-10-11 15:22 ` Richard Henderson
2022-10-11 15:45 ` Peter Maydell
2022-10-13 22:47 ` Ira Weiny
2022-10-10 22:29 ` [RFC PATCH 2/6] qemu/uuid: Add UUID static initializer ira.weiny
2022-10-11 9:13 ` Jonathan Cameron
2022-10-13 23:11 ` Ira Weiny
2022-10-10 22:29 ` [RFC PATCH 3/6] hw/cxl/cxl-events: Add CXL mock events ira.weiny
2022-10-11 10:07 ` Jonathan Cameron
2022-10-14 0:21 ` Ira Weiny
2022-10-17 15:57 ` Jonathan Cameron
2022-12-19 10:07 ` Jonathan Cameron
2022-12-21 18:56 ` Ira Weiny
2022-10-10 22:29 ` [RFC PATCH 4/6] hw/cxl/mailbox: Wire up get/clear event mailbox commands ira.weiny
2022-10-11 10:26 ` Jonathan Cameron
2022-10-10 22:29 ` [RFC PATCH 5/6] hw/cxl/cxl-events: Add event interrupt support ira.weiny
2022-10-11 10:30 ` Jonathan Cameron
2022-10-10 22:29 ` [RFC PATCH 6/6] hw/cxl/mailbox: Wire up Get/Set Event Interrupt policy ira.weiny
2022-10-11 10:40 ` Jonathan Cameron
2022-10-10 22:45 ` Ira Weiny [this message]
2022-10-11 9:40 ` [RFC PATCH 0/6] QEMU CXL Provide mock CXL events and irq support Jonathan Cameron
2022-10-11 17:03 ` Ira Weiny
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=Y0Sgiq+WMwOmqToe@iweiny-desk3 \
--to=ira.weiny@intel.com \
--cc=Jonathan.Cameron@huawei.com \
--cc=bwidawsk@kernel.org \
--cc=linux-cxl@vger.kernel.org \
--cc=mst@redhat.com \
--cc=qemu-devel@nongnu.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).