xen/arm: Crash when allocating memory for ACPI table (Was Re: Design doc of adding ACPI support for arm64 on Xen - version 2)

[Julien Grall <julien.grall@citrix.com>]

(Renaming the subject)

Hi Shannon,

On 14/08/15 15:05, Shannon Zhao wrote:
> 
> 
> On 2015/8/12 17:11, Julien Grall wrote:
>> On 12/08/2015 08:22, Shannon Zhao wrote:
>>> Hi,
>>
>> Hi Shannon,
>>
>> It's not part of the design discussion and we are avoiding to mix
>> discussion. Can you please create another thread (or at least renaming
>> the subject)?
>>
>>> I'm working on re-spinning this patchset while encountering a werid
>>> problem about xzalloc_bytes.
>>>
>>> Since I need to copy some ACPI tables, I need to allocate some memory
>>> for it. So there are a few places calling xzalloc_bytes. And it fails at
>>> the fifth one. The log is shown as following:
>>
>> Do you copy data in the newly allocated memory between 2 xzalloc_bytes?
>>
> 
> No, I just use xzalloc_bytes to allocate some place and copy ACPI to the
> allocated place, modify the content, then call
> raw_copy_to_guest_flush_dcache to copy the modified tables to guest memory.

Can you provide the code and show which call is crashing?

Regards,

-- 
Julien Grall