linux-kernel - Re: [PATCH v4 1/4] x86/boot: Add acpitb.h to help parse acpi tables

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Date:   Tue, 24 Jul 2018 14:02:57 +0800
From:   Baoquan He <bhe@...hat.com>
To:     Chao Fan <fanc.fnst@...fujitsu.com>
Cc:     linux-kernel@...r.kernel.org, x86@...nel.org, hpa@...or.com,
        tglx@...utronix.de, mingo@...hat.com, keescook@...omium.org,
        yasu.isimatu@...il.com, indou.takao@...fujitsu.com,
        caoj.fnst@...fujitsu.com, douly.fnst@...fujitsu.com
Subject: Re: [PATCH v4 1/4] x86/boot: Add acpitb.h to help parse acpi tables

Hi chao,

On 07/23/18 at 05:29pm, Chao Fan wrote:
> In order to parse ACPI tables, reuse the head file linux/acpi.h,
> so that the files in 'compressed' directory can read ACPI table
> by including this head file.
> 
> Signed-off-by: Chao Fan <fanc.fnst@...fujitsu.com>
> ---
>  arch/x86/boot/compressed/acpitb.h | 7 +++++++
>  1 file changed, 7 insertions(+)
>  create mode 100644 arch/x86/boot/compressed/acpitb.h
> 
> diff --git a/arch/x86/boot/compressed/acpitb.h b/arch/x86/boot/compressed/acpitb.h
> new file mode 100644
> index 000000000000..f8ab6e5b3e06
> --- /dev/null
> +++ b/arch/x86/boot/compressed/acpitb.h
> @@ -0,0 +1,7 @@
> +/* SPDX-License-Identifier: GPL-2.0 */
> +#include <linux/acpi.h>
> +
> +#define ACPI_MAX_TABLES                128
> +
> +/* Function to get ACPI SRAT table pointer. */
> +struct acpi_table_header *get_acpi_srat_table(void);

Since acpitb.h includes so few lines of code, not sure if we can move
them into .c files directly.

By the way, you might need to rebase this patchset on top of
tip/x86/boot.

Thanks
Baoquan