Re: [Xen-devel] [PATCH 0/5] xen: arm: fix guest register access bug

[Ian Campbell <Ian.Campbell@xxxxxxxxxx>]

On Tue, 2012-12-18 at 16:49 +0000, Ian Campbell wrote:
> All the places where we currently access guest registers are subtly
> broken, they always access the usr copy of a banked register regardless
> of the guest VCPU mode. Luckily because fiq mode isn't used much this
> mostly affects the SP and LR registers which are not typically used in
> mmio instructions (which is most of the reason for this kind of
> emulation). However the effect of hitting the bug is going to be some
> pretty weird behaviour!
> 
> I've also included, mostly because they were in my branch and rebasing
> things over them is a faff, some patches to clean up the tabs and line
> lengths in entry.S.

Applied 1,2 & 4 w/ Stefano's ACK, thanks.

Will redo #3 as discussed and repost.

Ian.



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