On Wed, Mar 14, 2018 at 04:50:42PM +0000, Marc Zyngier wrote: > All our useful entry points into the hypervisor are starting by > saving x0 and x1 on the stack. Let's move those into the vectors > by introducing macros that annotate whether a vector is valid or > not, thus indicating whether we want to stash registers or not. > > The only drawback is that we now also stash registers for el2_error, > but this should never happen, and we pop them back right at the > start of the handling sequence. > > Signed-off-by: Marc Zyngier <marc.zyngier@xxxxxxx> > --- > arch/arm64/kvm/hyp/hyp-entry.S | 56 ++++++++++++++++++++++++------------------ > 1 file changed, 32 insertions(+), 24 deletions(-) > Reviewed-by: Andrew Jones <drjones@xxxxxxxxxx>
