Xen project Mailing List

On Tue, Mar 10, 2020, 8:09 PM Bertrand Marquis <Bertrand.Marquis@xxxxxxx> wrote:

On 10 Mar 2020, at 08:46, Subhasree P V <subhasree.pv@xxxxxxxxxxxxxxxxxxx> wrote:

Thank you for your reply Julien.I have searched for the "earlycon" option in my linux-dom0.but i couldn't see that option in my Kconfig file.my dom0 version is 4.18.0-15-generic.

You need to pass earlycon=xen in the linux command line, usually your linux command line should contain at least "console=hvc0 earlycon=xen” and other options depending on where your rootfs is.

Depending on how you boot this might be possible to set in uboot environment or in your grub configuration for example.

Regards

Bertrand

Thanks & Regards,

Subhasree P V

On Mon, Mar 9, 2020 at 3:48 PM Julien Grall <julien@xxxxxxx> wrote:

On 08/03/2020 10:59, Subhasree P V wrote:
> Hi,

Hi,

Please don't top post.

> I just need to make sure the delay is coming from xen or linux
> kernel.The below print is coming from*decompress_kernel* function in
> arch/arm/boot/compressed/misc.c.
> *DOM0: Uncompressing Linux... done, booting the kernel.*

Does the same configuration works on baremetal?

Another solution would be to add earlycon=xen on Linux command line (I
think this works on arm32 as well when CONFIG_SERIAL_EARLYCON=y).

Cheers,

--
Julien Grall

This message contains confidential information and is intended only for the individual(s) named. If you are not the intended recipient, you are notified that disclosing, copying, distributing or taking any action in reliance on the contents of this mail and attached file/s is strictly prohibited. Please notify the sender immediately and delete this e-mail from your system. E-mail transmission cannot be guaranteed to be secured or error-free as information could be intercepted, corrupted, lost, destroyed, arrive late or incomplete, or contain viruses. The sender therefore does not accept liability for any errors or omissions in the contents of this message, which arise as a result of e-mail transmission.

This message contains confidential information and is intended only for the individual(s) named. If you are not the intended recipient, you are notified that disclosing, copying, distributing or taking any action in reliance on the contents of this mail and attached file/s is strictly prohibited. Please notify the sender immediately and delete this e-mail from your system. E-mail transmission cannot be guaranteed to be secured or error-free as information could be intercepted, corrupted, lost, destroyed, arrive late or incomplete, or contain viruses. The sender therefore does not accept liability for any errors or omissions in the contents of this message, which arise as a result of e-mail transmission.

Re: [Xen-users] Xen boot time optimization