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Re: [Xen-devel] Errors with Loading Xen at a Certain Address
- To: Julien Grall <Julien.Grall@xxxxxxx>
- From: Brian Woods <brian.woods@xxxxxxxxxx>
- Date: Thu, 3 Oct 2019 13:24:58 -0700
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- Cc: Brian Woods <brian.woods@xxxxxxxxxx>, nd <nd@xxxxxxx>, Volodymyr Babchuk <Volodymyr_Babchuk@xxxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- Delivery-date: Thu, 03 Oct 2019 20:25:31 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On Thu, Oct 03, 2019 at 07:23:23PM +0000, Julien Grall wrote:
> 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
Attached are the log and diff.
There's a WARN_ON() between the two debug printks calls I shared above.
--
Brian Woods
Attachment:
xen-git_52633db2c5ed-p8-bad_addr.log
Description: Text document
Attachment:
debug.patch
Description: Text Data
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