Some misc KVM RI/RDHWR handling fixes. Patch 1 prevents a reserved instruction (RI) exception from taking out the entire guest (e.g. crashme inevitably causes lots of these). If the hypervisor can't handle the RI, it can just emulate a guest RI exception instead so the guest OS can handle it. I've marked this one for stable since it allows guest userland to take out the VM. Patch 3 fixes the RDHWR emulation to actually consult HWREna so that the guest can catch exceptions of implemented RDHWR if it desires. I've not marked this for stable since Linux at least enables the hardware registers with HWREna anyway. Patch 2 and 4 are cleanups that I noticed while writing patch 3. Cc: Ralf Baechle <ralf@xxxxxxxxxxxxxx> Cc: Gleb Natapov <gleb@xxxxxxxxxx> Cc: Paolo Bonzini <pbonzini@xxxxxxxxxx> Cc: Sanjay Lal <sanjayl@xxxxxxxxxxx> Cc: linux-mips@xxxxxxxxxxxxxx Cc: kvm@xxxxxxxxxxxxxxx James Hogan (4): MIPS: KVM: Pass reserved instruction exceptions to guest MIPS: KVM: asm/kvm_host.h: Clean up whitespace MIPS: KVM: Consult HWREna before emulating RDHWR MIPS: KVM: Remove dead code in CP0 emulation arch/mips/include/asm/kvm_host.h | 417 ++++++++++++++++++++------------------- arch/mips/kvm/kvm_mips_emul.c | 40 ++-- 2 files changed, 229 insertions(+), 228 deletions(-) -- 1.8.1.2
