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Re: [Qemu-devel] Regression: Xen guest with 5G of RAM on 32bit fail to b
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From: |
Dr. David Alan Gilbert |
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Subject: |
Re: [Qemu-devel] Regression: Xen guest with 5G of RAM on 32bit fail to boot |
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Date: |
Tue, 1 Dec 2015 18:37:36 +0000 |
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User-agent: |
Mutt/1.5.24 (2015-08-30) |
* Anthony PERARD (address@hidden) 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 / address@hidden / Manchester, UK