Re: Invitation: Linaro Open Disscussion meeting to Sync-up on vCPU hotplug @ Wed Jun 7, 2023 11am - 12pm (BST) (salil.mehta@opnsrc.net)
Hi Joyce, Please find the slides of today's presentation attached and the minutes-of-meeting (Thanks to Jonathan for proactively noting it down for us):
# Minutes-of-Meeting:
1. Salil shared the Qemu repo, slides related to qemu changes and testing updates and KVMForum 2023 Talk sync-up.
# Qemu Repo of the latest port (tested with Oliver's Upton's changes and handling): Link: https://github.com/salil-mehta/qemu.git virt-cpuhp-armv8/rfc-v1-port11052023.dev-1
# Summary of fixes discussed: - Cold-booted vcpus can now be added using '-device' option - SMCCC Filter installation changes and Hypercall Exit handling changes with Oliver Upton's patches - Need a new forward ported James Kernel patches for vcpu hotplug - _STA.{PRES, ENA} status of the vcpus get reflected correctly during guest boot. - Pseudo/Live Migration now works – [Limited Testing] - Removed the 'id' string assigned to the 'realized' Cold-booted vcpus. 'libvirt' should now work. - Left Over: _OSC AML Method still to be included in Qemu and tested
2 Discussion of using OSC bit to not modify the x86 flow. - James stated it is a bug fix. Conclusion - move forwards with bug fix and cross fingers no one has broken firmware. If they do we may need to quirk (but do it when read)
3. Vishnu asked for branches to test. - Salil provided QEMU link for the repository - James look to post RFC next week. Delaying posting until can test rebased series. - Salil also share his kernel forward port of James' code to facilitate qemu testing. [TODO: will share later]
4. Move ACPI pick up of present / enabled moved - will affect a wide range of devices beyond CPUs.
5. Summary of key topics for KVM forum discussion in the slides.
Please feel free to add anything we might have missed. Many thanks!
Best regards Salil
On Mon, Jun 5, 2023 at 11:41 PM mailto:joyce.qi@linaro.org wrote: Linaro Open Disscussion meeting to Sync-up on vCPU hotplug Joyce QI 邀请您参加预先安排的 Zoom 会议。 加入 Zoom 会议 https://linaro-org.zoom.us/j/92261646989 会议号：922 6164 6989 手机一键拨号 +13126266799,,92261646989# 美国 (Chicago) +13092053325,,92261646989# 美国 根据您的位置拨号 +1 3
Joyce QI 邀请您参加预先安排的 Zoom 会议。加入 Zoom 会议 https://www.google.com/url?q=https%3A%2F%2Flinaro-org.zoom.us%2Fj%2F92261646... 会议号：922 6164 6989 手机一键拨号 +13126266799,,92261646989# 美国 (Chicago) +13092053325,,92261646989# 美国 根据您的位置拨号 +1 312 626 6799 美国 (Chicago) +1 309 205 3325 美国 +1 646 931 3860 美国 +1 301 715 8592 美国 (Washington DC) +1 305 224 1968 美国 +1 646 558 8656 美国 (New York) +1 507 473 4847 美国 +1 564 217 2000 美国 +1 669 444 9171 美国 +1 669 900 9128 美国 (San Jose) +1 689 278 1000 美国 +1 719 359 4580 美国 +1 253 205 0468 美国 +1 253 215 8782 美国 (Tacoma) +1 346 248 7799 美国 (Houston) +1 360 209 5623 美国 +1 386 347 5053 美国 888 788 0099 美国 免费 877 853 5247 美国 免费 会议号：922 6164 6989 查找本地号码：https://www.google.com/url?q=https%3A%2F%2Flinaro-org.zoom.us%2Fu%2Faeow7EUm... When Wednesday Jun 7, 2023 ⋅ 11am – 12pm (United Kingdom Time) Location https://linaro-org.zoom.us/j/92261646989 https://www.google.com/url?q=https%3A%2F%2Flinaro-org.zoom.us%2Fj%2F92261646... Guests mailto:joyce.qi@linaro.org - organizer mailto:james.morse@arm.com mailto:jonathan.cameron@huawei.com mailto:leonardo.garcia@linaro.org mailto:linaro-open-discussions@op-lists.linaro.org mailto:lorenzo.pieralisi@linaro.org mailto:salil.mehta@opnsrc.net mailto:salil.mehta@huawei.com https://calendar.google.com/calendar/event?action=VIEW&eid=YWt1MG1raHQ0N... 2FLondon&hl=en&es=1 Reply for mailto:salil.mehta@opnsrc.net Yes
No
Hi Salil,
Thanks for sharing, here is the update:
https://linaro.atlassian.net/wiki/spaces/LOD/pages/28933292085/2023-06-07+Me... https://linaro.atlassian.net/wiki/spaces/LOD/pages/28933292085/2023-06-07+Meeting+Minutes+Notes
在 2023年6月7日，下午9:32，Salil Mehta salil.mehta@huawei.com 写道：
Hi Joyce, Please find the slides of today's presentation attached and the minutes-of-meeting (Thanks to Jonathan for proactively noting it down for us):
# Minutes-of-Meeting:
- Salil shared the Qemu repo, slides related to qemu changes and testing updates and KVMForum 2023 Talk sync-up.
# Qemu Repo of the latest port (tested with Oliver's Upton's changes and handling): Link: https://github.com/salil-mehta/qemu.git virt-cpuhp-armv8/rfc-v1-port11052023.dev-1
# Summary of fixes discussed:
- Cold-booted vcpus can now be added using '-device' option
- SMCCC Filter installation changes and Hypercall Exit handling changes with Oliver Upton's patches
- Need a new forward ported James Kernel patches for vcpu hotplug
- _STA.{PRES, ENA} status of the vcpus get reflected correctly during guest boot.
- Pseudo/Live Migration now works – [Limited Testing]
- Removed the 'id' string assigned to the 'realized' Cold-booted vcpus. 'libvirt' should now work.
- Left Over: _OSC AML Method still to be included in Qemu and tested
2 Discussion of using OSC bit to not modify the x86 flow.
- James stated it is a bug fix. Conclusion - move forwards with bug fix
and cross fingers no one has broken firmware. If they do we may need to quirk (but do it when read)
- Vishnu asked for branches to test.
- Salil provided QEMU link for the repository
- James look to post RFC next week. Delaying posting until can test rebased series.
- Salil also share his kernel forward port of James' code to facilitate qemu testing. [TODO: will share later]
Move ACPI pick up of present / enabled moved - will affect a wide range of devices beyond CPUs.
Summary of key topics for KVM forum discussion in the slides.
Please feel free to add anything we might have missed. Many thanks!
Best regards Salil
On Mon, Jun 5, 2023 at 11:41 PM mailto:joyce.qi@linaro.org wrote: Linaro Open Disscussion meeting to Sync-up on vCPU hotplug Joyce QI 邀请您参加预先安排的 Zoom 会议。 加入 Zoom 会议 https://linaro-org.zoom.us/j/92261646989 会议号：922 6164 6989 手机一键拨号 +13126266799,,92261646989# 美国 (Chicago) +13092053325,,92261646989# 美国 根据您的位置拨号 +1 3
Joyce QI 邀请您参加预先安排的 Zoom 会议。加入 Zoom 会议 https://www.google.com/url?q=https%3A%2F%2Flinaro-org.zoom.us%2Fj%2F92261646... 会议号：922 6164 6989 手机一键拨号 +13126266799,,92261646989# 美国 (Chicago) +13092053325,,92261646989# 美国 根据您的位置拨号 +1 312 626 6799 美国 (Chicago) +1 309 205 3325 美国 +1 646 931 3860 美国 +1 301 715 8592 美国 (Washington DC) +1 305 224 1968 美国 +1 646 558 8656 美国 (New York) +1 507 473 4847 美国 +1 564 217 2000 美国 +1 669 444 9171 美国 +1 669 900 9128 美国 (San Jose) +1 689 278 1000 美国 +1 719 359 4580 美国 +1 253 205 0468 美国 +1 253 215 8782 美国 (Tacoma) +1 346 248 7799 美国 (Houston) +1 360 209 5623 美国 +1 386 347 5053 美国 888 788 0099 美国 免费 877 853 5247 美国 免费 会议号：922 6164 6989 查找本地号码：https://www.google.com/url?q=https%3A%2F%2Flinaro-org.zoom.us%2Fu%2Faeow7EUm... When Wednesday Jun 7, 2023 ⋅ 11am – 12pm (United Kingdom Time) Location https://linaro-org.zoom.us/j/92261646989 https://www.google.com/url?q=https%3A%2F%2Flinaro-org.zoom.us%2Fj%2F92261646... Guests mailto:joyce.qi@linaro.org - organizer mailto:james.morse@arm.com mailto:jonathan.cameron@huawei.com mailto:leonardo.garcia@linaro.org mailto:linaro-open-discussions@op-lists.linaro.org mailto:lorenzo.pieralisi@linaro.org mailto:salil.mehta@opnsrc.net mailto:salil.mehta@huawei.com https://calendar.google.com/calendar/event?action=VIEW&eid=YWt1MG1raHQ0N... 2FLondon&hl=en&es=1 Reply for mailto:salil.mehta@opnsrc.net Yes
No
<Linaro Open Discussion Meeting - 07062023.pdf>
Thanks Joyce
linaro-open-discussions@op-lists.linaro.org
-
Joyce Qi -
Salil Mehta