Re: [PATCH v4] arm64, ia64, ppc, s390, sh, tile, um, x86, mm: Remove default gate area

From: Michael Ellerman
Date: Mon Jul 28 2014 - 22:19:28 EST

On Thu, 2014-07-24 at 13:56 -0700, Andy Lutomirski wrote:
> The core mm code will provide a default gate area based on
> !defined(__HAVE_ARCH_GATE_AREA) && defined(AT_SYSINFO_EHDR).
> This default is only useful for ia64. arm64, ppc, s390, sh, tile,
> 64-bit UML, and x86_32 have their own code just to disable it. arm,
> 32-bit UML, and x86_64 have gate areas, but they have their own
> implementations.
> This gets rid of the default and moves the code into ia64.
> This should save some code on architectures without a gate area: it's
> now possible to inline the gate_area functions in the default case.

Looks good to me. Booted and everything seems happy, I still have a vdso etc.

Tested-by: Michael Ellerman <mpe@xxxxxxxxxxxxxx> (for powerpc)


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