Re: [Xen-devel] Regression: Xen guest with 5G of RAM on 32bit fail to boot

["Dr. David Alan Gilbert" <dgilbert@xxxxxxxxxx>]

* Anthony PERARD (anthony.perard@xxxxxxxxxx) wrote:
> Hi,
> 
> Under Xen, a guest with 5G of RAM, with a 32bit binary QEMU (well, with a
> 32bit dom0) does not boot anymore. QEMU abort() with "Bad ram offset 
> efffd000".
> 
> This issue first appear in 4ed023ce2a39ab5812d33cf4d819def168965a7f (Round
> up RAMBlock sizes to host page sizes).
> 
> The problem is in qemu_ram_alloc_internal() where 'size' and 'maxsize' are
> now been truncate to 32bit, due to 'qemu_host_page_size' been an uintptr_t
> in the HOST_PAGE_ALIGN macro.
> 
> ram_add_t is uint64_t when compiled with --enable-xen.

Hmm, that's a fun problem.
Would changing qemu_host_page_[size|mask] to ram_addr_t  work?

Dave

> 
> Regards,
> 
> -- 
> Anthony PERARD
--
Dr. David Alan Gilbert / dgilbert@xxxxxxxxxx / Manchester, UK

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