Messages in this thread | | | Date | Wed, 31 May 2017 05:27:32 -0700 | From | Davidlohr Bueso <> | Subject | Re: [PATCH v5 0/3] Implement fast refcount overflow protection |
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On Tue, 30 May 2017, Kees Cook wrote:
>A new patch has been added at the start of this series to make the default >refcount_t implementation just use an unchecked atomic_t implementation, >since many kernel subsystems want to be able to opt out of the full >validation, since it includes a small performance overhead. When enabling >CONFIG_REFCOUNT_FULL, the full validation is used. > >The other two patches provide overflow protection on x86 without incurring >a performance penalty. The changelog for patch 3 is reproduced here for >details:
To be sure I'm getting this right, after this all archs with the exception of x86 will use the regular atomic_t ("unsecure") flavor, right?
Thanks, Davidlohr
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