From: "Suzuki K. Poulose" <suzuki.poul...@arm.com> This series enables the 16K page size support on Linux for arm64. This series 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.
KVM bits have been tested on a fast model with GICv3 using Andre's kvmtool with gicv3 support[1]. Patches 1-7 cleans up the kernel page size handling code. Patches 8-11 Fixes some issues with the KVM bits, mainly the fake PGD handling code. Patch 12 Adds a check to ensure the CPU supports the selected granule size. Patch 13-14 Adds the 16k page size support bits. This series applies on top of for-next/core branch of the aarch64 tree and is also available here: git://linux-arm.org/linux-skp.git 16k/v1 [1] git://linux-arm.org/kvmtool.git gicv3/v4 TODO: 1) Testing on a silicon 2) Analyse the performance of HugePages with 16K (32MB) on a silicon. 3) SMMU driver Suzuki K. Poulose (14): 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: kvm: Fix {V}TCR_EL2_TG0 mask arm64: Cleanup VTCR_EL2 computation arm: kvm: Move fake PGD handling to arch specific files arm64: kvm: Rewrite fake pgd handling arm64: Check for selected granule support arm64: Add 16K page size support arm64: 36 bit VA arch/arm/include/asm/kvm_mmu.h | 7 ++ arch/arm/kvm/mmu.c | 44 ++-------- arch/arm64/Kconfig | 37 +++++++-- arch/arm64/Kconfig.debug | 2 +- arch/arm64/include/asm/boot.h | 1 + arch/arm64/include/asm/fixmap.h | 4 +- arch/arm64/include/asm/kernel-pgtable.h | 77 ++++++++++++++++++ arch/arm64/include/asm/kvm_arm.h | 29 +++++-- arch/arm64/include/asm/kvm_mmu.h | 135 +++++++++++++++++++++---------- arch/arm64/include/asm/page.h | 20 +---- arch/arm64/include/asm/pgtable-hwdef.h | 15 +++- arch/arm64/include/asm/sysreg.h | 8 ++ arch/arm64/include/asm/thread_info.h | 4 +- arch/arm64/kernel/head.S | 71 +++++++++------- arch/arm64/kernel/vmlinux.lds.S | 1 + arch/arm64/mm/mmu.c | 70 +++++++--------- arch/arm64/mm/proc.S | 4 +- 17 files changed, 337 insertions(+), 192 deletions(-) create mode 100644 arch/arm64/include/asm/kernel-pgtable.h -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/