Re: [PATCHv7 5/4] x86/boot/compressed/64: Support switching from 5- to 4-level paging

[Kirill A. Shutemov]

On Mon, Jan 29, 2018 at 06:07:58PM +0300, Kirill A. Shutemov wrote:
> +	/*
> +	 * We are in 5-level paging mode, but we want to switch to 4-level.
> +	 * Let's take the first entry in the top-level page table as our new CR3.
> +	 */
> +	movl	%cr3, %eax
> +	movl	(%eax), %eax
> +	movl	%eax, %cr3

Aghh.. Please ignore this.

It would fail if CR3 points above 4G.

-- 
 Kirill A. Shutemov