Wow, thanks! Works very well. On Fri, Nov 25, 2016 at 1:12 PM, Juergen Gross <jgr...@suse.com> wrote:
> On 25/11/16 04:11, Yuming Wu wrote: > > Hi, > > > > I'm debugging some xen code during hypervisor initialization. Before it > > reset stack and jump to cpu loop, I triggered a bug (may be change a > > readonly page). Usually, system will panic and give me stack info and > > backtrace. But before printk finish printing initialization message it > > just crash leaving an incomplete log. > > > > How can I make it flush log buffer more frequently or how can I get a > > full log/backtrace before system crash? > > > > I'm using serial ttyS2 to debug xen. dom0 earlyprink is xen. > > Add "sync_console" to your hypervisor boot parameters. > > > Juergen > -- Yuming Wu Institute of Parallel and Distributed Systems (IPADS), Shanghai Jiao Tong University
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