From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Wed, 28 Apr 2021 20:05:09 +0800 From: Jamie Huang Subject: Re: Can printk in the root domain cause the system to hung ? Message-ID: <20210428200509.3a89d2b5@jamie-ThinkPad> In-Reply-To: References: <20210425183312.12d2e2a5@jamie-ThinkPad> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit List-Id: Discussions about the Xenomai project List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Jan Kiszka Cc: xenomai@xenomai.org, rpm@xenomai.org On Tue, 27 Apr 2021 18:36:02 +0200 Jan Kiszka wrote: Thank you for reply! > On 25.04.21 12:33, Jamie Huang via Xenomai wrote: > > Hi, all: > > We are now porting ipipe on mips architecture. There is a > > problem, after local_irq_enable() is called in start_kernel(), > > system looks hung. We found that this may be related to printk in > > root domain, if we use early_printk instead of printk, the system > > looks normal and can continue the kernel boot process. Can someone > > tell me the possible reason, thanks! > > Is your code published already? No, but I think we will publish it when it is basically available. > > Also note that the I-pipe architecture is becoming legacy. We are > moving all archs to dovetail over 5.10 now. > > Jan > Our kernel version is 4.19, so we choose I-pipe now. We will consider dovetail if use a higher version of kernel.