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Re: [Xen-devel] Errors with Loading Xen at a Certain Address
- To: Brian Woods <brian.woods@xxxxxxxxxx>
- From: Julien Grall <Julien.Grall@xxxxxxx>
- Date: Thu, 3 Oct 2019 19:23:23 +0000
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- Cc: xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxxx>, nd <nd@xxxxxxx>, Volodymyr Babchuk <Volodymyr_Babchuk@xxxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>
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- Thread-topic: [Xen-devel] Errors with Loading Xen at a Certain Address
Hi,
On 03/10/2019 19:15, Brian Woods wrote:
> On Thu, Oct 03, 2019 at 06:08:45PM +0100, Julien Grall wrote:
> (XEN) BW_DEBUG: .6 count_info=0x0000000000000000
> (XEN) Domain heap initialised
> (XEN) BW_DEBUG: 01 count_info=0x0180000000000000
>
> Those debug messages sandwich end_boot_allocator() in start_xen().
hmmm, looking back at the thread, the WARN_ON() I suggested is actually
incorrect. :/ Sorry for that. It should be:
WARN_ON(mfn_x(page_to_mfn(pg + i)) == 0x01533);
Note the "i" instead of "1".
If the WARN_ON() is triggered between the two calls, then it would mean
we are giving page to the boot allocator.
This would imply that next_modules() or dt_unreserved_regions() is not
working as expected (i.e. carving out any modules).
Also, could you send your log with early printk enabled?
Cheers,
--
Julien Grall
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