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Date:	Sun, 6 Apr 2014 23:27:39 +0100
From:	Catalin Marinas <>
To:	Mark Salter <>
Cc:	Jean Pihet <>,
	Will Deacon <>,
	"" <>
Subject: Re: [PATCH] arm64: fix !CONFIG_COMPAT build failures

On Sat, Apr 05, 2014 at 03:25:49PM +0100, Mark Salter wrote:
> Recent arm64 builds using CONFIG_ARM64_64K_PAGES are failing with:
>   arch/arm64/kernel/perf_regs.c: In function ‘perf_reg_abi’:
>   arch/arm64/kernel/perf_regs.c:41:2: error: implicit declaration of function ‘is_compat_thread’
>   arch/arm64/kernel/perf_event.c:1398:2: error: unknown type name ‘compat_uptr_t’
> This is due to some recent arm64 perf commits with compat support:
>   commit 23c7d70d55c6d9:
>     ARM64: perf: add support for frame pointer unwinding in compat mode
>   commit 2ee0d7fd36a3f8:
>     ARM64: perf: add support for perf registers API
> Those patches make the arm64 kernel unbuildable if CONFIG_COMPAT is not
> defined and CONFIG_ARM64_64K_PAGES depends on !CONFIG_COMPAT. This patch
> allows the arm64 kernel to build with and without CONFIG_COMPAT.
> Signed-off-by: Mark Salter <>

Thanks. Applied.

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