id = 2365
title = "[Regression v8.2/v9.0+] stuck at SeaBIOS for >30s with 100% CPU (1T)"
state = "closed"
created_at = "2024-05-28T18:18:38.019Z"
closed_at = "2024-05-31T20:40:30.048Z"
labels = []
url = "https://gitlab.com/qemu-project/qemu/-/issues/2365"
host-os = "Gentoo"
host-arch = "amd64"
qemu-version = "v9.0.0 and v8.2.3 - v8.1.5 is OK"
guest-os = "n/a"
guest-arch = "n/a"
description = """starting our Linux direct-kernel-boot VMs with same args on different hosts/hardware will get stuck at SeaBIOS for 30-60s with 100% 1T CPU load starting with v8.2 and also in v9.0. v9.0.0 and v8.2.3 - v8.1.5 is OK. To be clear, everything seems to be fine after that, though I did not do any benchmarks to compare performance. It just delays (re)booting by almost 1 minute, which is a shame, because before that update/regression it was instant and our VMs only take 4s to boot, which is now more like 60s.
Downgrading to v8.1 instantly fixes it, upgrading to v8.2/v9.0 instantly breaks it."""
reproduce = """1. start VM with same args on different versions

somehow if I save this bug with `/label ~"kind::Bug"` it disappears, so I'm unable to add/keep the label"""
additional = "n/a"