Re: [PATCH 1/2] arm: Replace CONFIG_HAS_TLS_REG with HWCAP_TLS and check for it on V6

, Nicolas Pitre n...@fluxnic.net wrote: On Fri, 8 Apr 2011, Li Li wrote: Dears, I cannot understand how TLS EMU ensure it's SMP safe, because get_tls helper (at 0x0fe0) just read the value from 0x0ff0. But all SMP cores should have the exact same mapping to the vectors page

Re: [PATCH 1/2] arm: Replace CONFIG_HAS_TLS_REG with HWCAP_TLS and check for it on V6

Ah, I see. That's why I saw abnormal behavior when I enabled TLS EMU on an ARMv7 SMP SOC. Many thanks! :) On Fri, Apr 8, 2011 at 10:35 PM, Jamie Lokier ja...@shareable.org wrote: Li Li wrote: Nicolas, Thanks for the explanation. :) I noticed what you mentioned. Actually, Kconfig says TLS

Re: [PATCH 1/2] arm: Replace CONFIG_HAS_TLS_REG with HWCAP_TLS and check for it on V6

Dears, I cannot understand how TLS EMU ensure it's SMP safe, because get_tls helper (at 0x0fe0) just read the value from 0x0ff0. But all SMP cores should have the exact same mapping to the vectors page (at 0x). So various threads running on different SMP cores at the same time