Messages in this thread | | | Date | Fri, 6 Feb 2015 08:25:31 -0800 | Subject | Re: [PATCH] x86 spinlock: Fix memory corruption on completing completions | From | Linus Torvalds <> |
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On Fri, Feb 6, 2015 at 6:49 AM, Raghavendra K T <raghavendra.kt@linux.vnet.ibm.com> wrote: > Paravirt spinlock clears slowpath flag after doing unlock. [ fix edited out ]
So I'm not going to be applying this for 3.19, because it's much too late and the patch is too scary. Plus the bug probably effectively never shows up in real life (it is probably easy to trigger the speculative *read* but probably never the actual speculative write after dropping the lock last).
This will need a lot of testing by the paravirt people - both performance and correctness. So *maybe* for 3.20, but maybe for even later, and then marked for stable, of course.
Are there any good paravirt stress-tests that people could run for extended times?
Linus
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