On 29.10.21 23:46, Boris Ostrovsky wrote:
On 10/29/21 10:20 AM, Juergen Gross wrote:
--- a/Documentation/ABI/stable/sysfs-devices-system-xen_memory +++ b/Documentation/ABI/stable/sysfs-devices-system-xen_memory @@ -84,3 +84,13 @@ Description: Control scrubbing pages before returning them to Xen for others domains use. Can be set with xen_scrub_pages cmdline parameter. Default value controlled with CONFIG_XEN_SCRUB_PAGES_DEFAULT.
+What: /sys/devices/system/xen_memory/xen_memory0/boot_timeout +Date: November 2021 +KernelVersion: 5.16 +Contact: xen-devel@lists.xenproject.org +Description: + The time (in seconds) to wait before giving up to boot in case + initial ballooning fails to free enough memory. Applies only + when running as HVM or PVH guest and started with less memory + configured than allowed at max.
How is this going to be used? We only need this during boot.
Of course. Will switch to module_param().
- state = update_schedule(state); + balloon_state = update_schedule(balloon_state);
Now that balloon_state has whole file scope it can probably be updated inside update_schedule().
I can do that.
+ while ((credit = current_credit()) < 0) { + if (credit != last_credit) { + last_changed = jiffies; + last_credit = credit; + } + if (balloon_state == BP_ECANCELED) {
What about other states? We are really waiting for BP_DONE, aren't we?
Nearly. We are waiting for credit not being negative.
And in case of cancelled we know this won't happen without Xen admin intervention.
Juergen