On 06/25/2012 07:26 AM, Mihai Caraman wrote: > Embedded.Hypervisor category defines GSPRG0..3 physical registers for guests. > Avoid SPRG4-7 usage as scratch in host exception handlers, otherwise guest > SPRG4-7 registers will be clobbered. > For bolted TLB miss exception handlers, which is the version currently > supported by KVM, use SPRN_SPRG_GEN_SCRATCH (aka SPRG0) instead of > SPRN_SPRG_TLB_SCRATCH (aka SPRG6) and replace TLB with GEN PACA slots to > keep consitency. > For critical exception handler use SPRG3 instead of SPRG7. extlb is in the same cache line as other TLB stuff we need, while exgen isn't. Let's stick with extlb. -Scott -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
