diff options
| author |   Steve Capper <steve.capper@arm.com> | 2019-08-07 16:55:22 +0100 |
|---|---|---|
| committer |   Will Deacon <will@kernel.org> | 2019-08-09 11:17:26 +0100 |
| commit | b6d00d47e81a49f6cf462518c10408f37a3e6785 (patch) | |
| tree | f84df6281b176ab0f3c2fea47d8b9ef233f15b6a /arch/arm64/include/asm/pgtable-hwdef.h | |
| parent | arm64: mm: Modify calculation of VMEMMAP_SIZE (diff) | |
| download | linux-dev-b6d00d47e81a49f6cf462518c10408f37a3e6785.tar.xz linux-dev-b6d00d47e81a49f6cf462518c10408f37a3e6785.zip | |
arm64: mm: Introduce 52-bit Kernel VAs
Most of the machinery is now in place to enable 52-bit kernel VAs that
are detectable at boot time.
This patch adds a Kconfig option for 52-bit user and kernel addresses
and plumbs in the requisite CONFIG_ macros as well as sets TCR.T1SZ,
physvirt_offset and vmemmap at early boot.
To simplify things this patch also removes the 52-bit user/48-bit kernel
kconfig option.
Signed-off-by: Steve Capper <steve.capper@arm.com>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'arch/arm64/include/asm/pgtable-hwdef.h')
| -rw-r--r-- | arch/arm64/include/asm/pgtable-hwdef.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/arm64/include/asm/pgtable-hwdef.h b/arch/arm64/include/asm/pgtable-hwdef.h index db92950bb1a0..3df60f97da1f 100644 --- a/arch/arm64/include/asm/pgtable-hwdef.h +++ b/arch/arm64/include/asm/pgtable-hwdef.h @@ -304,7 +304,7 @@ #define TTBR_BADDR_MASK_52 (((UL(1) << 46) - 1) << 2) #endif -#ifdef CONFIG_ARM64_USER_VA_BITS_52 +#ifdef CONFIG_ARM64_VA_BITS_52 /* Must be at least 64-byte aligned to prevent corruption of the TTBR */ #define TTBR1_BADDR_4852_OFFSET (((UL(1) << (52 - PGDIR_SHIFT)) - \ (UL(1) << (48 - PGDIR_SHIFT))) * 8) |