Messages in this thread | | | From | Linus Torvalds <> | Date | Tue, 23 Jan 2018 09:31:16 -0800 | Subject | Re: [PATCHv6, RESEND 4/4] x86/boot/compressed/64: Handle 5-level paging boot if kernel is above 4G |
| |
On Tue, Jan 23, 2018 at 9:09 AM, Kirill A. Shutemov <kirill.shutemov@linux.intel.com> wrote: > > But if the bootloader put the kernel above 4G (not sure if anybody does > this), we would lose control as soon as paging is disabled, because the > code becomes unreachable to the CPU.
I do wonder if we need this. Why would a bootloader ever put the data above 4G? Does this really happen? Wouldn't it be easier to just say "bootloaders better put the kernel in the low 4G"?
Linus
| |