diff options
author | Mark Rutland <mark.rutland@arm.com> | 2016-01-25 11:45:06 +0000 |
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committer | Catalin Marinas <catalin.marinas@arm.com> | 2016-02-16 15:10:46 +0000 |
commit | 1e531cce68c92b46c7d29f36a72f9a3e5886678f (patch) | |
tree | 78eb4a816458502813be0927a0ec1145a2332f4b /arch/arm64/include/asm/fixmap.h | |
parent | 316b39db06718d59d82736df9fc65cf05b467cc7 (diff) |
arm64: mm: add __{pud,pgd}_populate
We currently have __pmd_populate for creating a pmd table entry given
the physical address of a pte, but don't have equivalents for the pud or
pgd levels of table.
To enable us to manipulate tables which are mapped outside of the linear
mapping (where we have a PA, but not a linear map VA), it is useful to
have these functions.
This patch adds __{pud,pgd}_populate. As these should not be called when
the kernel uses folded {pmd,pud}s, in these cases they expand to
BUILD_BUG(). So long as the appropriate checks are made on the {pud,pgd}
entry prior to attempting population, these should be optimized out at
compile time.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Tested-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Tested-by: Jeremy Linton <jeremy.linton@arm.com>
Cc: Laura Abbott <labbott@fedoraproject.org>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'arch/arm64/include/asm/fixmap.h')
0 files changed, 0 insertions, 0 deletions