Re: [Xen-devel] Slow HVM boot time, was "HVM boot time optimization"

[Wei Liu <wei.liu2@xxxxxxxxxx>]

On Thu, Feb 08, 2018 at 04:56:00PM +0000, Anthony PERARD wrote:
> On Thu, Feb 08, 2018 at 04:48:10PM +0000, Wei Liu wrote:
> > On Thu, Feb 08, 2018 at 08:31:40AM -0800, Stefano Stabellini wrote:
> > > CC'ing xen-devel and a few relevant people
> > > 
> > > On Thu, 8 Feb 2018, Yessine Daoud wrote:
> > > > Dear Sir,
> > > > I need your help please.
> > > > 
> > > > I am using a direct kernel boot (HVM guest) with kernel + ramdisk.
> > > > At boot, seabios is bloqued about 20 seconds (or more) at the following 
> > > > state:
> > > > 
> > 
> > The manual seems a bit confusing to me but maybe I misremember how it
> > works. My understanding is direct kernel boot jumps straight to kernel
> > entry point without going through firmware.
> > 
> > If this is direct kernel boot why is seabios involved?
> 
> seabios is the one to load the kernel into memory and start it.
> 

I see. Thank for explaining.

Wei.

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