linux-kernel - Re: [tip:x86/boot] x86/boot/compressed/64: Prepare trampoline memory

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Date:   Tue, 13 Feb 2018 21:32:24 +0300
From:   Cyrill Gorcunov <gorcunov@...il.com>
To:     kirill.shutemov@...ux.intel.com
Cc:     linux-tip-commits@...r.kernel.org, bp@...e.de, luto@...capital.net,
        peterz@...radead.org, mingo@...nel.org, hpa@...or.com,
        willy@...radead.org, linux-kernel@...r.kernel.org,
        torvalds@...ux-foundation.org, tglx@...utronix.de
Subject: Re: [tip:x86/boot] x86/boot/compressed/64: Prepare trampoline memory

On Sun, Feb 11, 2018 at 04:19:38AM -0800, tip-bot for Kirill A. Shutemov wrote:
...
> diff --git a/arch/x86/boot/compressed/head_64.S b/arch/x86/boot/compressed/head_64.S
> index d598d65..af9ffbd 100644
> --- a/arch/x86/boot/compressed/head_64.S
> +++ b/arch/x86/boot/compressed/head_64.S
...
> @@ -586,3 +604,7 @@ pgtable:
>  	.fill BOOT_PGT_SIZE, 1, 0
>  lvl5_pgtable:
>  	.fill PAGE_SIZE, 1, 0
> +
> +	.global pgtable_trampoline
> +pgtable_trampoline:
> +	.fill 4096, 1, 0

Btw, Kirill, while you're at this code: 4096 might be changed to PAGE_SIZE I think.
(of course on top of the series, when you have a spare minute, just for polishing)