[PATCH v2 0/7] KVM: Add a common API for range-based TLB invalidation
David Matlack
dmatlack at google.com
Thu Jan 26 10:40:18 PST 2023
This series introduces a common API for performing range-based TLB
invalidation. This is then used to supplant
kvm_arch_flush_remote_tlbs_memslot() and pave the way for two other
patch series:
1. https://lore.kernel.org/kvm/20230109215347.3119271-1-rananta@google.com/
Adds ARM support for range-based TLB invalidation and needs a
mechanism to invoke it from common code. This series provides such a
mechanism via kvm_arch_flush_remote_tlbs_range().
2. https://lore.kernel.org/kvm/20221208193857.4090582-1-dmatlack@google.com/
Refactors the TDP MMU into common code, which requires an API for
range-based TLB invaliation.
This series is based on patches 29-33 from (2.), but I made some further
cleanups after looking at it a second time.
Tested on x86_64 and ARM64 using KVM selftests.
Cc: Raghavendra Rao Ananta <rananta at google.com>
v2:
- Rebased on top of kvm-x86/next to resolve conflicts in changes slated
for 6.3 [Sean]
- Drop CONFIG_HAVE_KVM_ARCH_TLB_FLUSH_ALL from virt/kvm/Kconfig
[Oliver]
v1: https://lore.kernel.org/kvm/20230119173559.2517103-1-dmatlack@google.com/
David Matlack (7):
KVM: Rename kvm_arch_flush_remote_tlb() to
kvm_arch_flush_remote_tlbs()
KVM: arm64: Use kvm_arch_flush_remote_tlbs()
KVM: x86/mmu: Collapse kvm_flush_remote_tlbs_with_{range,address}()
together
KVM: x86/mmu: Rename kvm_flush_remote_tlbs_with_address()
KVM: x86/MMU: Use gfn_t in kvm_flush_remote_tlbs_range()
KVM: Allow range-based TLB invalidation from common code
KVM: Move kvm_arch_flush_remote_tlbs_memslot() to common code
arch/arm64/include/asm/kvm_host.h | 3 ++
arch/arm64/kvm/Kconfig | 1 -
arch/arm64/kvm/arm.c | 6 ----
arch/arm64/kvm/mmu.c | 6 ++--
arch/mips/include/asm/kvm_host.h | 4 +--
arch/mips/kvm/mips.c | 12 ++------
arch/riscv/kvm/mmu.c | 6 ----
arch/x86/include/asm/kvm_host.h | 7 +++--
arch/x86/kvm/mmu/mmu.c | 46 +++++++------------------------
arch/x86/kvm/mmu/mmu_internal.h | 7 ++---
arch/x86/kvm/x86.c | 2 +-
include/linux/kvm_host.h | 20 ++++++++++----
virt/kvm/Kconfig | 3 --
virt/kvm/kvm_main.c | 35 +++++++++++++++++++----
14 files changed, 73 insertions(+), 85 deletions(-)
base-commit: 503f0315c97739d3f8e645c500d81757dfbf76be
prerequisite-patch-id: 42a76ce7cec240776c21f674e99e893a3a6bee58
prerequisite-patch-id: c5ef6bbef252706b7e65b76dc9bd92cf320828f5
prerequisite-patch-id: c6e662cb6c369a47a027c25d3ccc7138a19b17f5
prerequisite-patch-id: 15a58bec64bf1537e6c9e2f52179fac652d441f7
prerequisite-patch-id: d5b6fea4724f4f2c3408b95d7ce5acdd4b528b10
--
2.39.1.456.gfc5497dd1b-goog
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