[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] Re: [PATCH] Allow removing writable mappings from splintered page tables.
On Fri, Sep 12, 2008 at 12:51 PM, Gianluca Guida <gianluca.guida@xxxxxxxxxxxxx> wrote: > Hello, > > The moving of the pagetable mapping in the linux kernel exposed the fact > that under the linux kernel sh_rm_write_access_from_sl1p was always failing. > > Linux seems to use big pages to access page tables, so we should instruct > the shadow code to be able to remove writable mappings from splintered > pagetables as well, avoiding using OS heuristic (which were failing in > 2.6.27 before George patch, leading to brute-force search at each resync). > > Todd: Can you try try the linux-2.6.27 kernbench with the following patch? > Also, are you using ioemu stub-domains? That should also give a performance > gain. > Sure, I can give it a try. Should I also apply George's patch right? I am not using ioemu stub-domains yet, would you recommend them in a general sense or are they more of a special case? Cheers, Todd _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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