From 8ce837cee8f51fb0eacb32c85461ea2f0fafc9f8 Mon Sep 17 00:00:00 2001 From: Ard Biesheuvel Date: Mon, 20 Oct 2014 15:42:07 +0200 Subject: arm64/mm: add create_pgd_mapping() to create private page tables For UEFI, we need to install the memory mappings used for Runtime Services in a dedicated set of page tables. Add create_pgd_mapping(), which allows us to allocate and install those page table entries early. Reviewed-by: Will Deacon Tested-by: Leif Lindholm Signed-off-by: Ard Biesheuvel --- arch/arm64/include/asm/mmu.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'arch/arm64/include/asm/mmu.h') diff --git a/arch/arm64/include/asm/mmu.h b/arch/arm64/include/asm/mmu.h index c2f006c48bdb..5fd40c43be80 100644 --- a/arch/arm64/include/asm/mmu.h +++ b/arch/arm64/include/asm/mmu.h @@ -33,5 +33,8 @@ extern void __iomem *early_io_map(phys_addr_t phys, unsigned long virt); extern void init_mem_pgprot(void); /* create an identity mapping for memory (or io if map_io is true) */ extern void create_id_mapping(phys_addr_t addr, phys_addr_t size, int map_io); +extern void create_pgd_mapping(struct mm_struct *mm, phys_addr_t phys, + unsigned long virt, phys_addr_t size, + pgprot_t prot); #endif -- cgit