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Re: [Xen-devel] [PATCH] xen/arm: Correctly handle non-page aligned pointer in raw_copy_*

On 02/18/2014 02:59 PM, Ian Campbell wrote:
> On Fri, 2014-02-14 at 17:10 +0000, Julien Grall wrote:
>> The current implementation of raw_copy_* helpers may lead to data corruption
>> and sometimes Xen crash when the guest virtual address is not aligned to
> Isn't a non-aligned address the vast majority of the cases (hypercall
> arguments on the guest stack)? How have we managed to get away with this
> for so long?

Because most of the time the size is smaller than 1 page. It not the
case with flask policy.

Julien Grall

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