diff options
| author | Ard Biesheuvel | 2014-10-20 15:42:07 +0200 |
|---|---|---|
| committer | Ard Biesheuvel | 2015-01-12 09:16:52 +0100 |
| commit | 8ce837cee8f51fb0eacb32c85461ea2f0fafc9f8 (patch) | |
| tree | 14bb68cb91e5890156381969a1f1f9ca87cd2047 /arch/arm64/include/asm/pgtable.h | |
| parent | arm64/mm: add explicit struct_mm argument to __create_mapping() (diff) | |
| download | kernel-qcow2-linux-8ce837cee8f51fb0eacb32c85461ea2f0fafc9f8.tar.gz kernel-qcow2-linux-8ce837cee8f51fb0eacb32c85461ea2f0fafc9f8.tar.xz kernel-qcow2-linux-8ce837cee8f51fb0eacb32c85461ea2f0fafc9f8.zip | |
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 <will.deacon@arm.com>
Tested-by: Leif Lindholm <leif.lindholm@linaro.org>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Diffstat (limited to 'arch/arm64/include/asm/pgtable.h')
| -rw-r--r-- | arch/arm64/include/asm/pgtable.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/pgtable.h b/arch/arm64/include/asm/pgtable.h index 210d632aa5ad..59079248529d 100644 --- a/arch/arm64/include/asm/pgtable.h +++ b/arch/arm64/include/asm/pgtable.h @@ -264,6 +264,11 @@ static inline pmd_t pte_pmd(pte_t pte) return __pmd(pte_val(pte)); } +static inline pgprot_t mk_sect_prot(pgprot_t prot) +{ + return __pgprot(pgprot_val(prot) & ~PTE_TABLE_BIT); +} + /* * THP definitions. */ |