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Re: [Xen-users] Xen boot time optimization
- To: Subhasree P V <subhasree.pv@xxxxxxxxxxxxxxxxxxx>
- From: Bertrand Marquis <Bertrand.Marquis@xxxxxxx>
- Date: Tue, 10 Mar 2020 14:39:23 +0000
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- Thread-topic: [Xen-users] Xen boot time optimization
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 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
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