Hi Xianting, On Thu, 28 Oct 2021 15:59:02 +0800 Xianting Tian wrote: > > 在 2021/10/28 下午12:51, Stephen Rothwell 写道: > > Hi Xianting, > > > > On Thu, 28 Oct 2021 09:51:00 +0800 Xianting Tian wrote: > >> 在 2021/10/27 下午7:42, Stephen Rothwell 写道: > >>> Hi all, > >>> > >>> On Mon, 25 Oct 2021 20:49:21 +1100 Stephen Rothwell wrote: > >>>> There seems to be something amiss with cnosole output in today's release > >>>> (at least on my ppc qemu boot tests). > >>> The console output seems to be back today. I assume its repair had > >>> something to do with commit > >>> > >>> 60f41e848492 ("Revert "tty: hvc: pass DMA capable memory to put_chars()"") > >>> >> hi Stephen， > >> > >> Thanks for the info, Could you share more details about the issue you met? is it about early console print issue? > >> > > Here is the diff between my boot logs: > thanks, I checked the log, Can I understand it as you missed some early bootup log  when use new release? yes, the console messages stopped for a while when we switched from the bootconsole to the final hvc0 console. > > @@ -124,81 +124,9 @@ > > clocksource: timebase mult[1f40000] shift[24] registered > > Console: colour dummy device 80x25 > > printk: console [hvc0] enabled > > - printk: console [hvc0] enabled > > - printk: bootconsole [udbg0] disabled > > printk: bootconsole [udbg0] disabled > > - pid_max: default: 32768 minimum: 301 > > - Mount-cache hash table entries: 8192 (order: 0, 65536 bytes, linear) > > - Mountpoint-cache hash table entries: 8192 (order: 0, 65536 bytes, linear) . . . -- Cheers, Stephen Rothwell