On Thu, 2010-11-25 at 13:30 +0800, Jin Dongming wrote: > Hi, Huang-san > > (2010/11/25 10:27), Huang Ying wrote: > > Hi, Dongming, > > > > On Thu, 2010-11-25 at 09:14 +0800, Jin Dongming wrote: > >> In some case of mce test, the injected data can be remained > >> in the registers and ca affect to the result of following test cases. > >> So add codes for clearing mce registers of given VCPU. > >> > >> mce registers of give VCPU could be cleared from kernel by calling > >> the function in this patch. What need to be paid attention is that > >> the status and mcg_status of mce must be set with 0. If not, mce > >> registers will not be cleared. > > > > Why do you need this? To use "mce=3" in guest Linux MCE testing? > When I set fake_panic==1 on Guest OS and tested mce via qemu-monitor, > I got the wrong result sometimes. The reason why I got the wrong result > was that mce registers were not cleared. So I made this patch. This can be done in QEMU via KVM_SET_MSRS too. > > If it is, why not use full reboot? MCE registers are not cleared in real > > machine too. And it is not so pain to reboot the guest. > Though we know that mce registers could be cleared by rebooting the Guest > Machine and the reboot of Guest Machine could save much more time than > the reboot of Host Machine, it is still slower than setting > fake_panic==1 to mce test. Best Regards, Huang Ying -- 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
