On Wed, Nov 26, 2014 at 05:07:20PM +0100, Andrew Jones wrote: > On Tue, Nov 25, 2014 at 04:10:02PM +0000, Alex Bennée wrote: > > This adds support for SW breakpoints inserted by userspace. > > > > First we need to trap all BKPT exceptions in the hypervisor (ELS). This > > in controlled through the MDCR_EL2 register. I've added a new field to > > the vcpu structure to hold this value. There should be scope to > > rationlise this with the VCPU_DEBUG_FLAGS/KVM_ARM64_DEBUG_DIRTY_SHIFT > > manipulation in later patches. > > I think we should start using the new mdcr_el2 field everywhere we plan > to within the same series that it is introduced. Otherwise it's hard > to tell if we need an mdcr_el2 field, or if a more generic field would > suffice. We can always translate bits of a more generic field to > mdcr_el2 bits when necessary, but not the reverse. > Agreed, this is getting messy already with this patch. -Christoffer -- To unsubscribe from this list: send the line "unsubscribe linux-doc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
