linux-kernel - Re: [PATCH v3 2/5] efi: Export arch

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Message-Id: <5332E25F020000780000255A@nat28.tlf.novell.com>
Date:	Wed, 26 Mar 2014 13:21:19 +0000
From:	"Jan Beulich" <JBeulich@...e.com>
To:	"Daniel Kiper" <daniel.kiper@...cle.com>
Cc:	<david.vrabel@...rix.com>, <ian.campbell@...rix.com>,
	<stefano.stabellini@...citrix.com>, <jeremy@...p.org>,
	<fenghua.yu@...el.com>, <matt.fleming@...el.com>,
	<tony.luck@...el.com>, <x86@...nel.org>, <tglx@...utronix.de>,
	<xen-devel@...ts.xenproject.org>, <boris.ostrovsky@...cle.com>,
	<konrad.wilk@...cle.com>, <eshelton@...ox.com>, <mingo@...hat.com>,
	<linux-efi@...r.kernel.org>, <linux-ia64@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, <hpa@...or.com>
Subject: Re: [PATCH v3 2/5] efi: Export arch_tables variable

>>> On 25.03.14 at 21:57, <daniel.kiper@...cle.com> wrote:
> Export arch_tables variable. Xen init function calls efi_config_init()
> which takes it as an argument.
> 
> Additionally, put __initdata in place suggested by include/linux/init.h.

Which isn't necessarily the most appropriate place.

> --- a/arch/x86/platform/efi/efi.c
> +++ b/arch/x86/platform/efi/efi.c
> @@ -70,7 +70,7 @@ static efi_system_table_t efi_systab __initdata;
>  
>  unsigned long x86_efi_facility;
>  
> -static __initdata efi_config_table_type_t arch_tables[] = {
> +efi_config_table_type_t arch_tables[] __initdata = {

efi_config_table_type_t __initdata arch_tables[] = {

would be what I'd recommend.

> --- a/include/linux/efi.h
> +++ b/include/linux/efi.h
> @@ -583,6 +583,8 @@ extern struct efi {
>  	struct efi_memory_map *memmap;
>  } efi;
>  
> +extern efi_config_table_type_t arch_tables[] __initdata;

And section placement annotations are bogus on declarations.

Jan

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