Messages in this thread | | | Date | Thu, 13 Dec 2012 08:30:56 +0100 | From | Ingo Molnar <> | Subject | Re: [GIT PULL] perf changes for v3.8 |
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* David Ahern <dsahern@gmail.com> wrote:
> > But doing it this way was wrong. Switch that "exclude_guest" > > attribute around, and admit that "H" was bogus, and that the > > right thing to do was to add a "V" flag that sets the > > "force_guest" flag instead. > > I understand this is annoying. [...]
It's not annoying, it's outright broken - it's a regression that we'll fix.
> [...] Older binaries on newer kernels was the only case I > could not fix. [...]
The "only" case?? Old, working binaries are actually our _most_ important usecase: it's 99.9% of our current installed base ...
> [...] (I guess a message could be added kernel side to at > least give a hint.) But the alternative -- based on code that > has existed for some time -- is for older binaries to crash > VMs.
That should be fixed differently, by not breaking existing working functionality.
Thanks,
Ingo
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