Re: [PATCH 1/4] powerpc: Track KUAP state in the PACA

2018-11-28 Thread Christophe Leroy
On 11/22/2018 02:04 PM, Russell Currey wrote: Necessary for subsequent patches that enable KUAP support for radix. Could plausibly be useful for other platforms too, if similar to the radix case, reading the register that manages these accesses is costly. Has the unfortunate downside of another

[PATCH 1/4] powerpc: Track KUAP state in the PACA

2018-11-22 Thread Russell Currey
Necessary for subsequent patches that enable KUAP support for radix. Could plausibly be useful for other platforms too, if similar to the radix case, reading the register that manages these accesses is costly. Has the unfortunate downside of another layer of abstraction for platforms that implemen