The following two patches fixup some missing memory handling in KVM/arm64. The first patch supports 48 bit virtual address space which involves supporting a different number of levels of page tables in the host kernel and the stage-2 page tables. The second patch ensures userspace cannot create memory slots with too large IPA space given VTCR_EL2.T0SZ = 24. Finally, we enable 48-bit VA support in Linux. The following host configurations have been tested with KVM on APM Mustang: 1) 4KB + 39 bits VA space 2) 4KB + 48 bits VA space 3) 64KB + 39 bits VA space 4) 64KB + 48 bits VA space Tested on TC2 for regressions. Christoffer Dall (3): arm64: KVM: Implement 48 VA support for KVM EL2 and Stage-2 arm/arm64: KVM: Ensure memslots are within KVM_PHYS_SIZE arm64: Allow 48-bits VA space without ARM_SMMU arch/arm/include/asm/kvm_mmu.h | 23 +++++++ arch/arm/kvm/arm.c | 2 +- arch/arm/kvm/mmu.c | 140 +++++++++++++++++++++++++++++++-------- arch/arm64/Kconfig | 2 +- arch/arm64/include/asm/kvm_mmu.h | 128 +++++++++++++++++++++++++++++++++-- 5 files changed, 259 insertions(+), 36 deletions(-) -- 2.1.2.330.g565301e.dirty -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
