This series enables the 16K page size support on Linux for arm64.
Adds support for 48bit VA(4 level), 47bit VA(3 level) and
36bit VA(2 level) with 16K. 16K was a late addition to the architecture
and is not implemented by all CPUs. Added a check to ensure the
selected granule size is supported by the CPU, failing which the CPU
won't proceed with booting. Also the kernel page size is added to the
kernel image header (patch from Ard).
KVM support has been dropped from this series, as we need to rewrite the
KVM stage-2 pagetable handling code to get rid of the fake page table
levels (as recommended by Christoffer and Marc). So, with 16K, we cannot
run KVM.
Patches 1-7 cleans up the kernel page size handling code.
Patch 8 Adds a check to ensure the CPU supports the selected granule
size.
Patch 9 Adds the page size information to image header.
Patches 10-11 Adds the support for 16K page size
This series applies on top for aarch64:for-next/core with Contiguous bit
support for kernel pagetables.
The tree is also available here:
git://linux-arm.org/linux-skp.git 16k/v3-aarch64-4.3-next
There is also another branch rebased on top of my 'CPU feature' series here:
git://linux-arm.org/linux-skp.git 16k/v3-aarch64-4.3-next+ftr
Changes since V2:
- Dropped KVM support patches
- Added proper comments for the page-table helper macros
- Change ARM64_HW_PGTABLE_LEVEL_SHIFT() to accept page table level as
described
by ARM ARM.
- Added reviews/acks
- Added CONT_SHIFT for 16K
Changes since V1:
- Rebase to 4.3-rc1
- Fix vmemmap_populate for 16K (use !ARM64_SWAPPER_USES_SECTION_MAPS)
- Better description for patch2 (suggested-by: Ard)
- Add page size information to the image header flags.
- Added reviewed-by/tested-by Ard.
Ard Biesheuvel (1):
arm64: Add page size to the kernel image header
Suzuki K. Poulose (10):
arm64: Move swapper pagetable definitions
arm64: Handle section maps for swapper/idmap
arm64: Introduce helpers for page table levels
arm64: Calculate size for idmap_pg_dir at compile time
arm64: Handle 4 level page table for swapper
arm64: Clean config usages for page size
arm64: Kconfig: Fix help text about AArch32 support with 64K pages
arm64: Check for selected granule support
arm64: Add 16K page size support
arm64: 36 bit VA
Documentation/arm64/booting.txt | 7 ++-
arch/arm64/Kconfig | 37 +++++++++++----
arch/arm64/Kconfig.debug | 2 +-
arch/arm64/include/asm/fixmap.h | 4 +-
arch/arm64/include/asm/kernel-pgtable.h | 77 +++++++++++++++++++++++++++++++
arch/arm64/include/asm/page.h | 21 ++-------
arch/arm64/include/asm/pgtable-hwdef.h | 25 ++++++++--
arch/arm64/include/asm/sysreg.h | 12 +++++
arch/arm64/include/asm/thread_info.h | 4 +-
arch/arm64/kernel/head.S | 75 +++++++++++++++++-------------
arch/arm64/kernel/image.h | 5 +-
arch/arm64/kernel/vmlinux.lds.S | 1 +
arch/arm64/kvm/Kconfig | 3 ++
arch/arm64/mm/mmu.c | 72 +++++++++++++----------------
arch/arm64/mm/proc.S | 4 +-
15 files changed, 242 insertions(+), 107 deletions(-)
create mode 100644 arch/arm64/include/asm/kernel-pgtable.h
--
1.7.9.5
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