linux-kernel - Re: [PATCH v15 5/6] x86/boot: Parse SRAT address from RSDP and store immovable memory

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Message-ID: <20190121094524.GD29166@zn.tnic>
Date:   Mon, 21 Jan 2019 10:45:24 +0100
From:   Borislav Petkov <bp@...en8.de>
To:     Chao Fan <fanc.fnst@...fujitsu.com>
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 5/6] x86/boot: Parse SRAT address from RSDP and store
 immovable memory

On Mon, Jan 21, 2019 at 05:42:14PM +0800, Chao Fan wrote:
> Or I clear this function as:
> static acpi_physical_address get_rsdp_addr(void)
> {
>         acpi_physical_address pa;
> 
>         pa = get_acpi_rsdp();
> 
>         if (!pa)
>                 pa = boot_params->acpi_rsdp_addr;
> 
>         if (!pa)
>                 pa = efi_get_rsdp_addr();
> 
>         if (!pa)
>                 pa = bios_get_rsdp_addr();
> 
>         if (pa && !boot_params->acpi_rsdp_addr)
>                 boot_params->acpi_rsdp_addr = pa;

Or simply:

	if (pa)
		boot_params->acpi_rsdp_addr = pa;

-- 
Regards/Gruss,
    Boris.

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