[Xen-devel] ttyS0: LSR safety check engaged!

To:	"xen-devel" <xen-devel@xxxxxxxxxxxxxxxxxxx>
Subject:	[Xen-devel] ttyS0: LSR safety check engaged!
From:	"kyle.ma83" <kyle.ma83@xxxxxxxxx>
Date:	Wed, 2 Sep 2009 17:00:03 +0800
Delivery-date:	Wed, 02 Sep 2009 02:00:57 -0700
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Hi everyone

When I use xen-3.2.0 and linux-2.6.18 domian0 and debug xen with gdb stub, I failed.

dmesg |grep tty always get :

serial8250: ttyS1 at I/O 0x2f8 (irq = 3) is a 16550A

00:06: ttyS1 at I/O 0x2f8 (irq = 3) is a 16550A

ttyS0: LSR safety check engaged!

my grub is :

kernel /boot/xen-3.2.0.gz hap com1=115200,8n1 console=com1H gdb=com1L

module /boot/vmlinuz-2.6.18.8-xen root=/dev/sda1 ro xencons=off

module /boot/initrd.img-2.6.18.8-xen

I use a DELL PowerEdge server with Intel cpu, I don't what is the reason. when I use the same server and boot linux kernel , and no problem .

In grub I change many times with xencons=off or with nothing etc. but the problem is the same ttyS0: LSR safety check engaged!

Could anyone help me on this? I really appreciate much.

2009-09-02

kyle.ma83

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[Xen-devel] ttyS0: LSR safety check engaged!