[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH] [shadow] Disable higher level pagetables early unshadow only when the "process dying" hypercall is used.
Hi George, On Wed, Dec 14, 2011 at 7:58 AM, George Dunlap <dunlapg@xxxxxxxxx> wrote: > On Wed, Nov 16, 2011 at 1:44 PM, Gianluca Guida <glguida@xxxxxxxxx> wrote: >> This patch fixes a performance problem in fully virtualized guests. > > What performance problem, and how does it fix it? The c/s doesn't > have any information about either, so it's hard for me to evaluate > whether I should pull it into the XenServer patchqueue... Have a look at this: http://old-list-archives.xen.org/archives/html/xen-devel/2011-11/msg00650.html A good question is whether the performance improvement that brought Stefano to implement the hypercall in Linux was due to the original patch creating a regression or if it really helps even after the performance regression is fixed. I wasn't here on the Xen world while the patch was tested on unstable, so i have no idea about it. Gianluca -- It was a type of people I did not know, I found them very strange and they did not inspire confidence at all. Later I learned that I had been introduced to electronic engineers. E. W. Dijkstra _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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