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KVM: PPC: PV mtmsrd L=1
authorAlexander Graf <agraf@suse.de>
Thu, 29 Jul 2010 12:48:04 +0000 (14:48 +0200)
committerAvi Kivity <avi@redhat.com>
Sun, 24 Oct 2010 08:50:56 +0000 (10:50 +0200)
commit819a63dc792b0888edd3eda306a9e1e049dcbb1c
tree70599dcd83eb9892785cd9e7ca5d92534bedcdd7tree | snapshot (tar.gz zip)
parent92234722ed631f472f1c4d79d35d8e5cf6910002commit | diff
KVM: PPC: PV mtmsrd L=1

The PowerPC ISA has a special instruction for mtmsr that only changes the EE
and RI bits, namely the L=1 form.

Since that one is reasonably often occuring and simple to implement, let's
go with this first. Writing EE=0 is always just a store. Doing EE=1 also
requires us to check for pending interrupts and if necessary exit back to the
hypervisor.

Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Avi Kivity <avi@redhat.com>
arch/powerpc/kernel/kvm.c diff | blob | blame | history
arch/powerpc/kernel/kvm_emul.S diff | blob | blame | history