Kirill A. Shutemov d52888aa27 x86/mm: Move LDT remap out of KASLR region on 5-level paging ... On 5-level paging the LDT remap area is placed in the middle of the KASLR randomization region and it can overlap with the direct mapping, the vmalloc or the vmap area. The LDT mapping is per mm, so it cannot be moved into the P4D page table next to the CPU_ENTRY_AREA without complicating PGD table allocation for 5-level paging. The 4 PGD slot gap just before the direct mapping is reserved for hypervisors, so it cannot be used. Move the direct mapping one slot deeper and use the resulting gap for the LDT remap area. The resulting layout is the same for 4 and 5 level paging. [ tglx: Massaged changelog ] Fixes: f55f0501cb ("x86/pti: Put the LDT in its own PGD if PTI is on") Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Andy Lutomirski <luto@kernel.org> Cc: bp@alien8.de Cc: hpa@zytor.com Cc: dave.hansen@linux.intel.com Cc: peterz@infradead.org Cc: boris.ostrovsky@oracle.com Cc: jgross@suse.com Cc: bhe@redhat.com Cc: willy@infradead.org Cc: linux-mm@kvack.org Cc: stable@vger.kernel.org Link: https://lkml.kernel.org/r/20181026122856.66224-2-kirill.shutemov@linux.intel.com		2018-11-06 21:35:11 +01:00
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i386
x86_64	x86/mm: Move LDT remap out of KASLR region on 5-level paging	2018-11-06 21:35:11 +01:00
amd-memory-encryption.txt
boot.txt	x86/boot: Add ACPI RSDP address to setup_header	2018-10-10 10:44:22 +02:00
earlyprintk.txt	x86/doc: Fix Documentation/x86/earlyprintk.txt	2018-09-10 15:09:30 +02:00
entry_64.txt
exception-tables.txt
intel_mpx.txt
intel_rdt_ui.txt	x86/intel_rdt: Use perf infrastructure for measurements	2018-09-28 22:48:27 +02:00
kernel-stacks
microcode.txt
mtrr.txt
orc-unwinder.txt
pat.txt	mm: remove references to vm_insert_pfn()	2018-10-26 16:25:20 -07:00
protection-keys.txt
pti.txt
tlb.txt
topology.txt
usb-legacy-support.txt
zero-page.txt	Documentation/x86: Fix typo in zero-page.txt	2018-11-05 07:05:45 +01:00