linux-kernel - Re: [PATCH v10 05/14] arm64: add image head flag definitions

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <15a8c694-ea85-8d9f-7498-62995f46ca1a@arm.com>
Date:   Tue, 3 Jul 2018 17:34:34 +0100
From:   James Morse <james.morse@....com>
To:     AKASHI Takahiro <takahiro.akashi@...aro.org>
Cc:     catalin.marinas@....com, will.deacon@....com, dhowells@...hat.com,
        vgoyal@...hat.com, herbert@...dor.apana.org.au,
        davem@...emloft.net, dyoung@...hat.com, bhe@...hat.com,
        arnd@...db.de, ard.biesheuvel@...aro.org, bhsharma@...hat.com,
        kexec@...ts.infradead.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v10 05/14] arm64: add image head flag definitions

Hi Akashi,

On 23/06/18 03:20, AKASHI Takahiro wrote:
> Those image head's flags will be used later by kexec_file loader.

> diff --git a/arch/arm64/include/asm/boot.h b/arch/arm64/include/asm/boot.h
> index 355e552a9175..0bab7eed3012 100644
> --- a/arch/arm64/include/asm/boot.h
> +++ b/arch/arm64/include/asm/boot.h
> @@ -5,6 +5,21 @@
>  
>  #include <asm/sizes.h>
>  
> +#define ARM64_MAGIC		"ARM\x64"
> +
> +#define HEAD_FLAG_BE_SHIFT		0
> +#define HEAD_FLAG_PAGE_SIZE_SHIFT	1
> +#define HEAD_FLAG_BE_MASK		0x1
> +#define HEAD_FLAG_PAGE_SIZE_MASK	0x3
> +
> +#define HEAD_FLAG_BE			1
> +#define HEAD_FLAG_PAGE_SIZE_4K		1
> +#define HEAD_FLAG_PAGE_SIZE_16K		2
> +#define HEAD_FLAG_PAGE_SIZE_64K		3

These match the linker-script-header kernel/image.h.
Generating one from the other is something we can do later.

Acked-by: James Morse <james.morse@....com>


Thanks,

James