Messages in this thread | | | From | "Kirill A. Shutemov" <> | Subject | [PATCHv2 0/2] x86: Fix boot with some memory above MAXMEM | Date | Mon, 8 Jun 2020 15:54:22 +0300 |
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A 5-level paging capable machine can have memory above 46-bit in the physical address space. This memory is only addressable in the 5-level paging mode: we don't have enough virtual address space to create direct mapping for such memory in the 4-level paging mode.
Tested with a hacked QEMU: https://gist.github.com/kiryl/d45eb54110944ff95e544972d8bdac1d
v2: - Fix boot with KASLR enabled on such machines; - Better error message;
Kirill A. Shutemov (2): x86/mm: Fix boot with some memory above MAXMEM x86/boot/KASLR: Fix boot with some memory above MAXMEM
arch/x86/boot/compressed/kaslr.c | 11 +++++++++++ arch/x86/kernel/e820.c | 24 ++++++++++++++++++++++-- 2 files changed, 33 insertions(+), 2 deletions(-)
-- 2.26.2
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