Make ARMv6 behave with TLS, VFPv3, and NEON
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All 14 patches have a Reviewed-by or Acked-by.
| Patch | Catalin Marinas | Nicolas Pitre |
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Cover letter [PATCH 0/2] Make ARMv6 behave with TLS, VFPv3, and NEON
Hi all,
Here is an updated version of the earlier patch for the TLS [1], and a related patch for VFPv3 and NEON. Sorry it took a while before I got around updating this patch.
This series allows booting ARMv6 and 7 with the same kernel binary, such as omap24xx (ARMv6), omap34xx (ARMv7) and omap44xx (ARMv7 SMP).
To summarize the problem, ARM1136 has TLS and MVFR registers only starting with r1 p0, and at least omap2420 is earlier at r0 p2 and does not have TLS or MVFR registers.
Regards,
Tony
[1] arm: Replace CONFIG_HAS_TLS_REG with HWCAP_TLS and check for it on V6
http://lists.infradead.org/pipermail/linux-arm-kernel/2010-March/011667.html
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Tony Lindgren (2):
arm: Replace CONFIG_HAS_TLS_REG with HWCAP_TLS and check for it on V6
arm: Make VFPv3 usable on ARMv6
arch/arm/include/asm/hwcap.h | 1 + arch/arm/include/asm/vfpmacros.h | 18 ++++++++++++++++++ arch/arm/kernel/entry-armv.S | 29 ++++++++++++++--------------- arch/arm/kernel/setup.c | 20 ++++++++++++++++++++ arch/arm/kernel/traps.c | 23 +++++++++++++---------- arch/arm/mm/Kconfig | 11 ----------- arch/arm/mm/proc-v6.S | 6 ++++-- arch/arm/mm/proc-v7.S | 2 +- arch/arm/vfp/vfpmodule.c | 10 +++++++--- 9 files changed, 78 insertions(+), 42 deletions(-)
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