Gleb Natapov wrote: > On Wed, Feb 17, 2010 at 01:13:29PM +0200, Avi Kivity wrote: >> On 02/17/2010 12:43 PM, Gleb Natapov wrote: >>>> And, again: This is an _existing_ user space ABI. We could only provide >>>> an alternative, but we have to maintain what is there at least for some >>>> longer grace period. >>>> >>> But it was always broken for SVM and was broken for VMX for a year and >>> nobody noticed, so may be instead of reintroducing old interface we should >>> do it right this time? >> We need to fix the existing interface first, and then think long and >> hard if we want yet another interface, since we're likely to screw >> it up as well. >> >> The more interfaces we introduce, the harder maintenance becomes. >> > We are in a sad state if we cannot improve interface. The current one > outsource part of CPU functionality into userspace. This should be a big > no-no. I still disagree on this. Moving the decision logic to user space prevented to re-implement a gdbstub in kernel space. I oversaw that re-injecting #BP over older SVM was broken, but it is now fixed for all vendors. So moving it back to kernel has actually no long-term reason. Jan -- Siemens AG, Corporate Technology, CT T DE IT 1 Corporate Competence Center Embedded Linux -- 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
