On 2013-07-15 12:52, Stefan Hajnoczi wrote: > The following qemu.git commit adds a ~2 minute regression in boot time > to a x86_64 live CD: > > commit b40acf99bef69fa8ab0f9092ff162fde945eec12 > Author: Jan Kiszka <jan.kis...@siemens.com> > Date: Mon Jun 24 10:45:09 2013 +0200 > > ioport: Switch dispatching to memory core layer > > After the ISOLINUX menu, the display goes white and sits there for about > 2 minutes on my laptop before the usual Linux boot screen appears. > > $ qemu-system-x86_64 -enable-kvm -cpu host -m 1024 -cdrom ~/iso/livecd.iso > > The parent commit immediately goes to the usual boot screen after > ISOLINUX. Unfortunately I don't have a ISO download link for the live > CD.
Can you share it otherwise (before I spend time on recreating something that does not trigger it)? > > Any ideas? What does perf say during that time? What ftrace regarding the port numbers and access types? Jan -- Siemens AG, Corporate Technology, CT RTC ITP SES-DE Corporate Competence Center Embedded Linux
