linux-kernel - Re: [PATCH 7/7] arm: Add livepatch necessary arch selects into Kconfig

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Date:   Wed, 18 Jan 2017 13:40:23 +0100 (CET)
From:   Miroslav Benes <mbenes@...e.cz>
To:     Abel Vesa <abelvesa@...ux.com>
cc:     linux@...linux.org.uk, jpoimboe@...hat.com, jeyu@...hat.com,
        jikos@...nel.org, pmladek@...e.com, rostedt@...dmis.org,
        mingo@...hat.com, gregkh@...uxfoundation.org,
        geert+renesas@...der.be, davem@...emloft.net,
        akpm@...ux-foundation.org, emil.l.velikov@...il.com,
        mchehab@...nel.org, linux@...ck-us.net, ard.biesheuvel@...aro.org,
        jens.wiklander@...aro.org, jean-philippe.brucker@....com,
        viro@...iv.linux.org.uk, stefano.stabellini@...citrix.com,
        chris.brandt@...esas.com, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, live-patching@...r.kernel.org
Subject: Re: [PATCH 7/7] arm: Add livepatch necessary arch selects into
 Kconfig

On Tue, 6 Dec 2016, Abel Vesa wrote:

> This adds HAVE_LIVEPATCH, MODULES_USE_ELF_RELA and HAVE_LIVEPATCH
> to arm Kconfig.
> 
> Signed-off-by: Abel Vesa <abelvesa@...ux.com>
> ---
>  arch/arm/Kconfig | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
> index 186c4c2..f4e9ace 100644
> --- a/arch/arm/Kconfig
> +++ b/arch/arm/Kconfig
> @@ -50,6 +50,7 @@ config ARM
>  	select HAVE_DMA_API_DEBUG
>  	select HAVE_DMA_CONTIGUOUS if MMU
>  	select HAVE_DYNAMIC_FTRACE if (!XIP_KERNEL) && !CPU_ENDIAN_BE32 && MMU
> +	select HAVE_DYNAMIC_FTRACE_WITH_REGS
>  	select HAVE_EFFICIENT_UNALIGNED_ACCESS if (CPU_V6 || CPU_V6K || CPU_V7) && MMU
>  	select HAVE_EXIT_THREAD
>  	select HAVE_FTRACE_MCOUNT_RECORD if (!XIP_KERNEL)
> @@ -67,6 +68,7 @@ config ARM
>  	select HAVE_KERNEL_XZ
>  	select HAVE_KPROBES if !XIP_KERNEL && !CPU_ENDIAN_BE32 && !CPU_V7M
>  	select HAVE_KRETPROBES if (HAVE_KPROBES)
> +	select HAVE_LIVEPATCH
>  	select HAVE_MEMBLOCK
>  	select HAVE_MOD_ARCH_SPECIFIC
>  	select HAVE_NMI
> @@ -82,6 +84,7 @@ config ARM
>  	select HAVE_VIRT_CPU_ACCOUNTING_GEN
>  	select IRQ_FORCED_THREADING
>  	select MODULES_USE_ELF_REL
> +	select MODULES_USE_ELF_RELA

I wrote it before but I think you cannot have both MODULES_USE_ELF_REL and 
MODULES_USE_ELF_RELA.

Miroslav