Messages in this thread | | | From | Andy Lutomirski <> | Subject | Re: [PATCH v10 6/6] x86/split_lock: Enable split lock detection by kernel parameter | Date | Thu, 21 Nov 2019 14:24:21 -0800 |
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> On Nov 21, 2019, at 1:51 PM, Luck, Tony <tony.luck@intel.com> wrote: > > On Thu, Nov 21, 2019 at 02:15:22PM +0100, Peter Zijlstra wrote: >> Also, just to remind everyone why we really want this. Split lock is a >> potent, unprivileged, DoS vector. > > So how much do we "really want this"? > > It's been 543 days since the first version of this patch was > posted. We've made exactly zero progress. > > Current cut down patch series is the foundation to move one > small step towards getting this done. > > Almost all of what's in this set will be required in whatever > final solution we want to end up with. Out of this:
Why don’t we beat it into shape and apply it, hidden behind BROKEN. Then we can work on the rest of the patches and have a way to test them.
It would be really, really nice if we could pass this feature through to a VM. Can we?
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