Messages in this thread | | | Date | Mon, 29 Jan 2018 18:39:45 +0300 | From | "Kirill A. Shutemov" <> | Subject | Re: [PATCHv7 5/4] x86/boot/compressed/64: Support switching from 5- to 4-level paging |
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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
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