linux-kernel - Re: [PATCH v15 3/6] x86/boot: Introduce efi_get_rsdp

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]

Date:   Mon, 14 Jan 2019 09:26:42 +0800
From:   Chao Fan <fanc.fnst@...fujitsu.com>
To:     Borislav Petkov <bp@...en8.de>
CC:     <linux-kernel@...r.kernel.org>, <x86@...nel.org>,
        <tglx@...utronix.de>, <mingo@...hat.com>, <hpa@...or.com>,
        <keescook@...omium.org>, <bhe@...hat.com>, <msys.mizuma@...il.com>,
        <indou.takao@...fujitsu.com>, <caoj.fnst@...fujitsu.com>
Subject: Re: [PATCH v15 3/6] x86/boot: Introduce efi_get_rsdp_addr() to find
 RSDP from EFI table

On Sun, Jan 13, 2019 at 12:05:45PM +0100, Borislav Petkov wrote:
>On Sun, Jan 13, 2019 at 05:47:04PM +0800, Chao Fan wrote:
>> 'acpi_physical_address' could be define as u64 or u32.
>
>And when can acpi_physical_address be a u32?
>

According to the code, I saw:
#ifdef ACPI_ASL_COMPILER
#define ACPI_32BIT_PHYSICAL_ADDRESS
#endif

and then
#ifdef ACPI_32BIT_PHYSICAL_ADDRESS
typedef u32 acpi_physical_address;

As for ACPI_ASL_COMPILER, I saw iASL in documention, but can't find more
information in the code. If I miss something, please let me know.

Thanks,
Chao Fan

>-- 
>Regards/Gruss,
>    Boris.
>
>Good mailing practices for 400: avoid top-posting and trim the reply.
>
>