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Date:   Tue, 26 Mar 2019 14:57:14 +0100
From:   Borislav Petkov <>
To:     Junichi Nomura <>
Cc:     Dave Young <>,
        "" <>,
        "" <>,
        "" <>,
        "" <>,
        "" <>,
        "" <>
Subject: Re: [PATCH v2] x86/boot: Use EFI setup data if provided

On Mon, Mar 25, 2019 at 11:10:01PM +0000, Junichi Nomura wrote:
> efi_get_rsdp_addr() and kexec_get_rsdp_addr() could be implemented
> like this (sorry about the pseudo code):

This doesn't look like what I suggested:

> So efi_get_rsdp_addr() needs to be refactored in such a way so that at
> least the loop towards the end gets carved out into a separate function
> - __efi_get_rsdp_addr() or so - which gets config_tables, nr_tables and
> size as arguments and finds the RSDP address in the kexec-ed kernel.

You need to carve out the loop at the end and make it into a separate
__efi_get_rsdp_addr() function which gets the physical or the virtual


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