Messages in this thread | | | Date | Mon, 12 Oct 2020 17:08:30 +0300 | From | "Kirill A. Shutemov" <> | Subject | Re: [PATCH] x86/boot/64: Initialize 5-level paging variables earlier |
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On Sat, Oct 10, 2020 at 03:26:24PM -0400, Arvind Sankar wrote: > On Sat, Oct 10, 2020 at 03:11:10PM -0400, Arvind Sankar wrote: > > Commit > > ca0e22d4f011 ("x86/boot/compressed/64: Always switch to own page table") > > started using a new set of pagetables even without KASLR. > > > > After that commit, initialize_identity_maps() is called before the > > 5-level paging variables are setup in choose_random_location(), which > > will not work if 5-level paging is actually enabled. > > Note that I don't have hardware that supports 5-level paging, so this > is not actually tested with 5-level, but based on code inspection, it > shouldn't work.
qemu supports it. -cpu "qemu64,+la57"
-- Kirill A. Shutemov
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