Create PTE, PMD, PUD and P4D levels page table mapping for physical addresses of DRAM and NVDIMM both. Here E820_TYPE_PMEM represents the region of e820_table.
Signed-off-by: Huaisheng Ye <[email protected]> Signed-off-by: Ocean He <[email protected]> --- arch/x86/mm/init_64.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c index af11a28..c03c2091 100644 --- a/arch/x86/mm/init_64.c +++ b/arch/x86/mm/init_64.c @@ -420,6 +420,10 @@ void __init cleanup_highmap(void) if (!after_bootmem && !e820__mapped_any(paddr & PAGE_MASK, paddr_next, E820_TYPE_RAM) && +#ifdef CONFIG_ZONE_NVM + !e820__mapped_any(paddr & PAGE_MASK, paddr_next, + E820_TYPE_PMEM) && +#endif !e820__mapped_any(paddr & PAGE_MASK, paddr_next, E820_TYPE_RESERVED_KERN)) set_pte(pte, __pte(0)); @@ -475,6 +479,10 @@ void __init cleanup_highmap(void) if (!after_bootmem && !e820__mapped_any(paddr & PMD_MASK, paddr_next, E820_TYPE_RAM) && +#ifdef CONFIG_ZONE_NVM + !e820__mapped_any(paddr & PAGE_MASK, paddr_next, + E820_TYPE_PMEM) && +#endif !e820__mapped_any(paddr & PMD_MASK, paddr_next, E820_TYPE_RESERVED_KERN)) set_pmd(pmd, __pmd(0)); @@ -561,6 +569,10 @@ void __init cleanup_highmap(void) if (!after_bootmem && !e820__mapped_any(paddr & PUD_MASK, paddr_next, E820_TYPE_RAM) && +#ifdef CONFIG_ZONE_NVM + !e820__mapped_any(paddr & PAGE_MASK, paddr_next, + E820_TYPE_PMEM) && +#endif !e820__mapped_any(paddr & PUD_MASK, paddr_next, E820_TYPE_RESERVED_KERN)) set_pud(pud, __pud(0)); @@ -647,6 +659,10 @@ void __init cleanup_highmap(void) if (!after_bootmem && !e820__mapped_any(paddr & P4D_MASK, paddr_next, E820_TYPE_RAM) && +#ifdef CONFIG_ZONE_NVM + !e820__mapped_any(paddr & PAGE_MASK, paddr_next, + E820_TYPE_PMEM) && +#endif !e820__mapped_any(paddr & P4D_MASK, paddr_next, E820_TYPE_RESERVED_KERN)) set_p4d(p4d, __p4d(0)); -- 1.8.3.1 _______________________________________________ Linux-nvdimm mailing list [email protected] https://lists.01.org/mailman/listinfo/linux-nvdimm
