On Thu, 4 Jan 2018, Andy Lutomirski wrote:
On Thu, Jan 4, 2018 at 4:28 AM, Thomas Gleixner tglx@linutronix.de wrote:
--- a/arch/x86/include/asm/pgtable_64_types.h +++ b/arch/x86/include/asm/pgtable_64_types.h @@ -88,7 +88,7 @@ typedef struct { pteval_t pte; } pte_t; # define VMALLOC_SIZE_TB _AC(32, UL) # define __VMALLOC_BASE _AC(0xffffc90000000000, UL) # define __VMEMMAP_BASE _AC(0xffffea0000000000, UL) -# define LDT_PGD_ENTRY _AC(-4, UL) +# define LDT_PGD_ENTRY _AC(-3, UL) # define LDT_BASE_ADDR (LDT_PGD_ENTRY << PGDIR_SHIFT) #endif
If you actually change the memory map order, you need to change the shadow copy in mm/dump_pagetables.c, too. I have a draft patch to just sort the damn list, but that's not ready yet.
Yes, I forgot that in the first attempt. Noticed myself when dumping it, but that should be irrelevant to figure out whether it fixes the problem at hand.