On 10/12/2016 01:41 AM, Florian Weimer wrote: > On 06/08/2016 07:34 PM, Dave Hansen wrote: >> +To use this feature, the processor must support it, and Linux >> +must contain support for the feature on a given processor. >> +As of early 2016 only future Intel x86 processors are supported, >> +and this hardware supports 16 protection keys in each process. >> +However, pkey 0 is used as the default key, so a maximum of 15 >> +are available for actual application use. > > How can we reserve pkeys for use in system libraries? We are currently in need of a centralized mechanism to track which keys are allocated/free. My plan is to go add one to glibc. I'll add the documentation to the manpages when I post this functionality. -- To unsubscribe from this list: send the line "unsubscribe linux-api" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
