Hi everyone, This is version two of the patches rewriting KVM's page-table code on arm64 that I previously posted here: https://lore.kernel.org/r/20200730153406.25136-1-will@xxxxxxxxxx Changes since v1 include: * Removed opaque cookie in favour of exposing 'struct kvm_pgtable' * Moved code under hyp/ * Simplified stage-1 PGD allocation/free * Tested (and consequently fixed) for 64k pages * Tested (and consequently fixed) MMU notifiers * Rebased onto Marc's kvm-arm64/pt-rework-base branch * Included updated versions of the memcache patches I posted at [1] We've successfully got this running at EL2 as part of Android's "Protected KVM" project, and we'll follow up with those patches once this part has settled down. Please consider for 5.10. Cheers, Will [1] https://lore.kernel.org/r/20200723110227.16001-1-will@xxxxxxxxxx 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: 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 (18): KVM: arm64: Don't free memcache pages in kvm_phys_addr_ioremap() 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 | 221 +--- arch/arm64/include/asm/kvm_pgtable.h | 279 ++++ 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 | 860 +++++++++++++ arch/arm64/kvm/mmu.c | 1567 +++-------------------- arch/arm64/kvm/reset.c | 38 +- 11 files changed, 1326 insertions(+), 1902 deletions(-) create mode 100644 arch/arm64/include/asm/kvm_pgtable.h create mode 100644 arch/arm64/kvm/hyp/pgtable.c -- 2.28.0.220.ged08abb693-goog _______________________________________________ kvmarm mailing list kvmarm@xxxxxxxxxxxxxxxxxxxxx https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
