On 06/12/2022 20:32, Julien Grall wrote:
Hi,
On 07/10/2022 14:08, Mykyta Poturai wrote:
This is a series from Mirela Simonovic. Ported to 4.16 and with
added changes suggested here
https://lore.kernel.org/all/CAKPH-NjmaZENb8gT=+fobraycrf01_--6gura2ck9di5wiu...@mail.gmail.com
This series contains support for suspend to RAM (in the following text
just
'suspend') for Xen on arm64. The implementation is aligned with the
design
specification that has been proposed on xen-devel list:
https://lists.xenproject.org/archives/html/xen-devel/2017-12/msg01574.html
At a high-level the series contains:
1) Support for suspending guests via virtual PSCI SYSTEM_SUSPEND call
2) Support for resuming a guest on an interrupt targeted to that guest
3) Support for suspending Xen after dom0 finalizes the suspend
4) Support for resuming Xen on an interrupt that is targeted to a guest
From the previous discussion, there were a few dubious code in
cpu_disable() (e.g. mdelay()). So did you go through the code to confirm
it is fully Arm compliant?
Another missing pieces is that we don't free anything related to the CPU
that is been powered down. But AFAICT, we will end up to allocate the
memory again for things like page tables, per-cpu...
Cheers,
--
Julien Grall
