linux-kernel - Re: [PATCH v2 2/2] x86/boot: use already defined KEEP_SEGMENTS macro in head

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Date:	Sat, 31 Jan 2015 12:31:43 +0600
From:	Alexander Kuleshov <kuleshovmail@...il.com>
To:	Chris Mason <clm@...com>
Cc:	Josef Bacik <jbacik@...com>, David Sterba <dsterba@...e.cz>,
	linux-kernel@...r.kernel.org,
	Alexander Kuleshov <kuleshovmail@...il.com>
Subject: Re: [PATCH v2 2/2] x86/boot: use already defined KEEP_SEGMENTS macro
 in head_{32,64}.S

Sorry for noise, misunderstood  send-email alias with maintainers.

2015-01-31 12:30 GMT+06:00 Alexander Kuleshov <kuleshovmail@...il.com>:
> There is already defined macro KEEP_SEGMENTS in the
> bootparam.h, let's use it instead of shifting bits
>
> Signed-off-by: Alexander Kuleshov <kuleshovmail@...il.com>
> ---
>  arch/x86/boot/compressed/head_32.S | 5 +++--
>  arch/x86/boot/compressed/head_64.S | 3 ++-
>  2 files changed, 5 insertions(+), 3 deletions(-)
>
> diff --git a/arch/x86/boot/compressed/head_32.S b/arch/x86/boot/compressed/head_32.S
> index 1d7fbbc..11e549d 100644
> --- a/arch/x86/boot/compressed/head_32.S
> +++ b/arch/x86/boot/compressed/head_32.S
> @@ -29,7 +29,8 @@
>  #include <asm/page_types.h>
>  #include <asm/boot.h>
>  #include <asm/asm-offsets.h>
> -
> +#include <asm/bootparam.h>
> +
>         __HEAD
>  ENTRY(startup_32)
>  #ifdef CONFIG_EFI_STUB
> @@ -102,7 +103,7 @@ preferred_addr:
>          * Test KEEP_SEGMENTS flag to see if the bootloader is asking
>          * us to not reload segments
>          */
> -       testb   $(1<<6), BP_loadflags(%esi)
> +       testb   $KEEP_SEGMENTS, BP_loadflags(%esi)
>         jnz     1f
>
>         cli
> diff --git a/arch/x86/boot/compressed/head_64.S b/arch/x86/boot/compressed/head_64.S
> index 6b1766c..90c1521 100644
> --- a/arch/x86/boot/compressed/head_64.S
> +++ b/arch/x86/boot/compressed/head_64.S
> @@ -31,6 +31,7 @@
>  #include <asm/msr.h>
>  #include <asm/processor-flags.h>
>  #include <asm/asm-offsets.h>
> +#include <asm/bootparam.h>
>
>         __HEAD
>         .code32
> @@ -46,7 +47,7 @@ ENTRY(startup_32)
>          * Test KEEP_SEGMENTS flag to see if the bootloader is asking
>          * us to not reload segments
>          */
> -       testb $(1<<6), BP_loadflags(%esi)
> +       testb $KEEP_SEGMENTS, BP_loadflags(%esi)
>         jnz 1f
>
>         cli
> --
> 2.3.0-rc1
>



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