From mboxrd@z Thu Jan  1 00:00:00 1970
From: Ian Campbell <Ian.Campbell@citrix.com>
Subject: Re: About arm32 address translation
Date: Wed, 16 Oct 2013 11:24:47 +0100
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To: Chen Baozi <baozich@gmail.com>
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On Wed, 2013-10-16 at 18:02 +0800, Chen Baozi wrote:
> On Oct 16, 2013, at 5:25 PM, Ian Campbell <Ian.Campbell@citrix.com> wrote:
> 
> > On Wed, 2013-10-16 at 17:20 +0800, Chen Baozi wrote:
> >> Hi Ian,
> >> 
> >> I am trying to add supporting dumping 32-bit guest on arm32 to see
> >> what happened in my dom0 kernel when booting. It seems
> >> gvirt_to_maddr() is not workable under arm32.
> > 
> > What makes you say that, it should work, or else it is buggy and we've
> > not noticed, but it is used in copy to/from user routines so I doubt
> > that.
> 
> Ok, I'll look into it. The output shows me "Failed to convert stack to
> physical address". In this case, it must be gvirt_to_maddr to return
> -EFAULT.

That suggests that the guest's SP doesn't have a mapping in the guest's
PTs. What's the full trace?


Ian