Re: [RFC PATCH] getcpu_cache system call: caching current CPU number (x86)
From: Florian Weimer <hidden>
Date: 2015-07-20 08:35:40
On 07/18/2015 01:33 AM, Andy Lutomirski wrote:
I think the API should be "set gsbase to x + y*(cpu number)". On x86_64, userspace just allocates a big swath of virtual space and populates it as needed.
This will break WINE and similar applications which use %gs today. -- Florian Weimer / Red Hat Product Security