On Mon, Jul 20, 2015 at 8:32 AM, Florian Weimer <fweimer@xxxxxxxxxx> wrote: > On 07/20/2015 05:31 PM, Andy Lutomirski wrote: >> On Jul 20, 2015 1:35 AM, "Florian Weimer" <fweimer@xxxxxxxxxx> wrote: >>> >>> 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. >> >> Presumably WINE could just opt not to use this facility, just like >> WINE will have to opt out of whatever the enterprise people who want >> WRGSBASE were thinking of doing with it. > > How is this possible if it's process-global attribute and glibc or some > library in the process starts using it? > glibc will have to expose a way to turn it off, I guess. (ELF flag?) -- 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
