[PATCH v3 21/31] arm64: 32-bit (compat) applications support

Arnd Bergmann arnd at arndb.de
Fri Sep 7 15:47:45 EDT 2012

On Friday 07 September 2012, Catalin Marinas wrote:
> From: Will Deacon <will.deacon at arm.com>
> This patch adds support for 32-bit applications. The vectors page is a
> binary blob mapped into the application user space at 0xffff0000 (the
> AArch64 toolchain does not support compilation of AArch32 code). Full
> compatibility with ARMv7 user space is supported. The use of deprecated
> ARMv7 functionality (SWP, CP15 barriers) has been disabled by default on
> AArch64 kernels and unaligned LDM/STM is not supported.
> Please note that only the ARM 32-bit EABI is supported, so no OABI
> compatibility.
> Signed-off-by: Will Deacon <will.deacon at arm.com>
> Signed-off-by: Catalin Marinas <catalin.marinas at arm.com>
> Acked-by: Tony Lindgren <tony at atomide.com>

I guess you haven't had time to turn any of these into architecture
independent functions as discussed last time?


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