[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH V3] X86/vMCE: handle broken page with regard to migration
Ian Jackson wrote: > Liu, Jinsong writes ("RE: [Xen-devel] [PATCH V3] X86/vMCE: handle > broken page with regard to migration"): >> Ian Jackson wrote: >>> Liu, Jinsong writes ("RE: [Xen-devel] [PATCH V3] X86/vMCE: handle >>> broken page with regard to migration"): >>>> No, at last lter, there are 4 points: >>>> 1. start last iter >>>> 2. get and transfer pfn_type to target >>>> 3. copy page to target >>>> 4. end last iter > ... >> It indeed checks mce after point 3 for each page, but what's the >> advantage of keeping a separate list? > > It avoids yet another loop over all the pages. Unless I have > misunderstood. Which I may have, because: if it checks for mce after > point 3 then surely that is sufficient ? We don't need to worry about > mces after that check. > > Ian. In fact it will only do 1~2 more iter (if vmce occur at last iter), with exactly 1 more page (the broken page) -- vm frozen under this case, right? As for the case vmce occur after our check, target will be very happy (and lucky) run the vm w/o broken page. Thanks, Jinsong _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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