Hi all, Here's version four of the KVM page-table rework I previously posted here: v1: https://lore.kernel.org/r/20200730153406.25136-1-will@xxxxxxxxxx v2: https://lore.kernel.org/r/20200818132818.16065-1-will@xxxxxxxxxx v3: https://lore.kernel.org/r/20200825093953.26493-1-will@xxxxxxxxxx Changes since v3 include: * Removed some more unused code from the old implementation * Renumbered KVM_PGTABLE_PROT_* to match file permissions in hex dumps * Simplified kvm_granule_shift() and removed kvm_start_level() * Only clear valid bit when invalidating a PTE, leaving phys addr intact * Fail gracefully when attempting to allocate without a memory cache * Rewrote stage2_apply_range() as a function instead of a macro * Fixed fault address rounding with hugetlbfs * Fixed permission fault handling when dirty logging is enabled * Added comments * Added reviewer tags Many thanks to Alex and Gavin for their comments. Will Cc: Marc Zyngier <maz@xxxxxxxxxx> Cc: Quentin Perret <qperret@xxxxxxxxxx> Cc: James Morse <james.morse@xxxxxxx> Cc: Suzuki Poulose <suzuki.poulose@xxxxxxx> Cc: Catalin Marinas <catalin.marinas@xxxxxxx> Cc: Gavin Shan <gshan@xxxxxxxxxx> Cc: Alexandru Elisei <alexandru.elisei@xxxxxxx> Cc: kernel-team@xxxxxxxxxxx Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx --->8 Quentin Perret (4): KVM: arm64: Add support for stage-2 write-protect in generic page-table KVM: arm64: Convert write-protect operation to generic page-table API KVM: arm64: Add support for stage-2 cache flushing in generic page-table KVM: arm64: Convert memslot cache-flushing code to generic page-table API Will Deacon (17): KVM: arm64: Remove kvm_mmu_free_memory_caches() KVM: arm64: Add stand-alone page-table walker infrastructure KVM: arm64: Add support for creating kernel-agnostic stage-1 page tables KVM: arm64: Use generic allocator for hyp stage-1 page-tables KVM: arm64: Add support for creating kernel-agnostic stage-2 page tables KVM: arm64: Add support for stage-2 map()/unmap() in generic page-table KVM: arm64: Convert kvm_phys_addr_ioremap() to generic page-table API KVM: arm64: Convert kvm_set_spte_hva() to generic page-table API KVM: arm64: Convert unmap_stage2_range() to generic page-table API KVM: arm64: Add support for stage-2 page-aging in generic page-table KVM: arm64: Convert page-aging and access faults to generic page-table API KVM: arm64: Add support for relaxing stage-2 perms in generic page-table code KVM: arm64: Convert user_mem_abort() to generic page-table API KVM: arm64: Check the pgt instead of the pgd when modifying page-table KVM: arm64: Remove unused page-table code KVM: arm64: Remove unused 'pgd' field from 'struct kvm_s2_mmu' KVM: arm64: Don't constrain maximum IPA size based on host configuration arch/arm64/include/asm/kvm_host.h | 2 +- arch/arm64/include/asm/kvm_mmu.h | 251 +--- arch/arm64/include/asm/kvm_pgtable.h | 281 ++++ arch/arm64/include/asm/pgtable-hwdef.h | 23 - arch/arm64/include/asm/pgtable-prot.h | 19 - arch/arm64/include/asm/stage2_pgtable.h | 215 --- arch/arm64/kvm/arm.c | 2 +- arch/arm64/kvm/hyp/Makefile | 2 +- arch/arm64/kvm/hyp/pgtable.c | 880 ++++++++++++ arch/arm64/kvm/mmu.c | 1745 ++++------------------- arch/arm64/kvm/reset.c | 38 +- 11 files changed, 1444 insertions(+), 2014 deletions(-) create mode 100644 arch/arm64/include/asm/kvm_pgtable.h create mode 100644 arch/arm64/kvm/hyp/pgtable.c -- 2.28.0.526.ge36021eeef-goog _______________________________________________ kvmarm mailing list kvmarm@xxxxxxxxxxxxxxxxxxxxx https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
