diff options
| author | Tony Lindgren <tony@atomide.com> | 2010-07-05 14:53:10 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2010-07-09 14:41:35 +0100 |
| commit | f159f4ed55bb0fa5470800641e03a13a7e0eae6e (patch) | |
| tree | c2ed54b103c2a1c58fa4b50740fec462ccfeec74 /arch/arm/mm/proc-v6.S | |
| parent | c1b2d9704c77ddaec46d5d681e1360ac40268743 (diff) | |
| download | lwn-f159f4ed55bb0fa5470800641e03a13a7e0eae6e.tar.gz lwn-f159f4ed55bb0fa5470800641e03a13a7e0eae6e.zip | |
ARM: 6207/1: Replace CONFIG_HAS_TLS_REG with HWCAP_TLS and check for it on V6
The TLS register is only available on ARM1136 r1p0 and later.
Set HWCAP_TLS flags if hardware TLS is available and test for
it if CONFIG_CPU_32v6K is not set for V6.
Note that we set the TLS instruction in __kuser_get_tls
dynamically as suggested by Jamie Lokier <jamie@shareable.org>.
Also the __switch_to code is optimized out in most cases as
suggested by Nicolas Pitre <nico@fluxnic.net>.
Reviewed-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mm/proc-v6.S')
| -rw-r--r-- | arch/arm/mm/proc-v6.S | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/arch/arm/mm/proc-v6.S b/arch/arm/mm/proc-v6.S index 7a5337ed7d68..2f5a3c23a0fe 100644 --- a/arch/arm/mm/proc-v6.S +++ b/arch/arm/mm/proc-v6.S @@ -239,7 +239,8 @@ __v6_proc_info: b __v6_setup .long cpu_arch_name .long cpu_elf_name - .long HWCAP_SWP|HWCAP_HALF|HWCAP_THUMB|HWCAP_FAST_MULT|HWCAP_EDSP|HWCAP_JAVA + /* See also feat_v6_fixup() for HWCAP_TLS */ + .long HWCAP_SWP|HWCAP_HALF|HWCAP_THUMB|HWCAP_FAST_MULT|HWCAP_EDSP|HWCAP_JAVA|HWCAP_TLS .long cpu_v6_name .long v6_processor_functions .long v6wbi_tlb_fns @@ -262,7 +263,7 @@ __pj4_v6_proc_info: b __v6_setup .long cpu_arch_name .long cpu_elf_name - .long HWCAP_SWP|HWCAP_HALF|HWCAP_THUMB|HWCAP_FAST_MULT|HWCAP_EDSP + .long HWCAP_SWP|HWCAP_HALF|HWCAP_THUMB|HWCAP_FAST_MULT|HWCAP_EDSP|HWCAP_TLS .long cpu_pj4_name .long v6_processor_functions .long v6wbi_tlb_fns |