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Free some memory on resume before re-loading modules #568

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Merged
marmarek merged 1 commit into from
Apr 6, 2025
Merged

Free some memory on resume before re-loading modules #568

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6 changes: 6 additions & 0 deletions qubes-rpc/prepare-suspend
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Original file line number Diff line number Diff line change
Expand Up @@ -81,6 +81,12 @@ if [ "$action" = "suspend" ]; then
done
echo "$LOADED_MODULES" > /var/run/qubes-suspend-modules-loaded
else
# Force some apps into swap, to free memory for wifi drivers to be loaded
# in a moment. Some of those allocations cannot trigger swappin on their
# own. It's ok for this command to use more memory than VM has RAM. But it
# cannot exceed swap size.
dd if=/dev/zero of=/dev/null bs=512M count=1 status=none
echo 1 > /proc/sys/vm/compact_memory
# Free some RAM for minimal netvm to prevent memory issues when loading
# drivers
if [ -f /var/run/qubes-service/minimal-netvm ]; then
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