On Thu, 20 Feb 2020 at 18:33, James Morse <james.mo...@arm.com> wrote:
>
> Hi Ard,
>
> On 20/02/2020 17:04, Ard Biesheuvel wrote:
> > On Thu, 20 Feb 2020 at 17:58, James Morse <james.mo...@arm.com> wrote:
> >> It turns out KVM relies on the inline hint being honoured by the compiler
> >> in quite a few more places than expected. Something about the Shadow Call
> >> Stack support[0] causes the compiler to avoid inline-ing and to place
> >> these functions outside the __hyp_text. This ruins KVM's day.
> >>
> >> Add the simon-says __always_inline annotation to all the static
> >> inlines that KVM calls from HYP code.
>
> > This isn't quite as yuck as I expected, fortunately, but it does beg
> > the question whether we shouldn't simply map the entire kernel at EL2
> > instead?
>
> If the kernel is big enough to need internal veneers (the 128M range?), these 
> would
> certainly go horribly wrong because its running somewhere other than the 
> relocation-time
> address. We would need a way of telling the linker to keep the bits of KVM 
> close together...
>

Ah, of course, there is that as well ...
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