Re: [PATCH v2 02/11] xen/hvmlite: Bootstrap HVMlite guest

[Boris Ostrovsky]

On 04/25/2016 09:47 AM, Borislav Petkov wrote:
> On Mon, Apr 25, 2016 at 09:21:27AM -0400, Boris Ostrovsky wrote:
> > I was following  Documentation/x86/boot.txt (plus comments in code preceding
> > those two routines) which I considered to be the API.
> >
> > We are supposed to come to startup_32 with paging off and %esi pointing to
> > boot_params. For 64-bit paging is on, %rsi points to zero-page.
> So the entry points which are ABI and the ones I believe you're talking
> about are in arch/x86/boot/compressed/head_64.S. But you have all this
> stuff laid out in arch/x86/xen/ and I don't see you using the entry
> points in boot/compressed/. It looks more to me that you're using the
> ones in arch/x86/kernel/head_{32,64}.S after decompression.

Yes, those. We don't do anything in arch/x86/boot/compressed, hypervisor 
loads vmlinuX at entry point specified by XEN_ELFNOTE_PHYS32_ENTRY 
(which is hvmlite_start_xen).


-boris