From 1f74ef0f2d7d692fcd615621e0e734c3e7771413 Mon Sep 17 00:00:00 2001 From: Rusty Russell Date: Thu, 13 Mar 2014 11:23:38 +1030 Subject: [PATCH] virtio_balloon: don't softlockup on huge balloon changes. When adding or removing 100G from a balloon: BUG: soft lockup - CPU#0 stuck for 22s! [vballoon:367] We have a wait_event_interruptible(), but the condition is always true (more ballooning to do) so we don't ever sleep. We also have a wait_event() for the host to ack, but that is also always true as QEMU is synchronous for balloon operations. Reported-by: Gopesh Kumar Chaudhary Cc: stable@kernel.org Signed-off-by: Rusty Russell --- Reading git-format-patch failed