[PATCH v4 00/21] KVM: arm64: Rewrite page-table code and fault handling
Will Deacon
will at kernel.org
Mon Sep 7 11:23:23 EDT 2020
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@kernel.org
v2: https://lore.kernel.org/r/20200818132818.16065-1-will@kernel.org
v3: https://lore.kernel.org/r/20200825093953.26493-1-will@kernel.org
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 at kernel.org>
Cc: Quentin Perret <qperret at google.com>
Cc: James Morse <james.morse at arm.com>
Cc: Suzuki Poulose <suzuki.poulose at arm.com>
Cc: Catalin Marinas <catalin.marinas at arm.com>
Cc: Gavin Shan <gshan at redhat.com>
Cc: Alexandru Elisei <alexandru.elisei at arm.com>
Cc: kernel-team at android.com
Cc: linux-arm-kernel at lists.infradead.org
--->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
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