| From: |
| Vincent Donnefort <vdonnefort-AT-google.com> |
| To: |
| maz-AT-kernel.org, oliver.upton-AT-linux.dev, joey.gouly-AT-arm.com, suzuki.poulose-AT-arm.com, yuzenghui-AT-huawei.com, catalin.marinas-AT-arm.com, will-AT-kernel.org |
| Subject: |
| [PATCH v2 0/9] Stage-2 huge mappings for pKVM np-guests |
| Date: |
| Thu, 06 Mar 2025 11:00:29 +0000 |
| Message-ID: |
| <20250306110038.3733649-1-vdonnefort@google.com> |
| Cc: |
| qperret-AT-google.com, linux-arm-kernel-AT-lists.infradead.org, kvmarm-AT-lists.linux.dev, linux-kernel-AT-vger.kernel.org, kernel-team-AT-android.com, Vincent Donnefort <vdonnefort-AT-google.com> |
| Archive-link: |
| Article |
Hi all,
This series adds support for stage-2 huge mappings (PMD_SIZE) to pKVM
np-guests, that is installing PMD-level mappings in the stage-2,
whenever the stage-1 is backed by either Hugetlbfs or THPs.
The last patch of that series is an optimization for CMOs using a shared
PMD_SIZE fixmap.
Changes since v1: https://lore.kernel.org/all/20250228102530.1229089-1-vdon...
- WARN_ON() on !PAGE_ALIGNED size for guest CMOs (Quentin)
- check_range_allowed_memory() before accessing the Vmemmap (Quentin)
Quentin Perret (2):
KVM: arm64: Convert pkvm_mappings to interval tree
KVM: arm64: Add a range to pkvm_mappings
Vincent Donnefort (7):
KVM: arm64: Handle huge mappings for np-guest CMOs
KVM: arm64: Add a range to __pkvm_host_share_guest()
KVM: arm64: Add a range to __pkvm_host_unshare_guest()
KVM: arm64: Add a range to __pkvm_host_wrprotect_guest()
KVM: arm64: Add a range to __pkvm_host_test_clear_young_guest()
KVM: arm64: Stage-2 huge mappings for np-guests
KVM: arm64: np-guest CMOs with PMD_SIZE fixmap
arch/arm64/include/asm/kvm_pgtable.h | 7 +-
arch/arm64/include/asm/kvm_pkvm.h | 2 +
arch/arm64/kvm/hyp/include/nvhe/mem_protect.h | 8 +-
arch/arm64/kvm/hyp/include/nvhe/mm.h | 4 +-
arch/arm64/kvm/hyp/nvhe/hyp-main.c | 16 +-
arch/arm64/kvm/hyp/nvhe/mem_protect.c | 236 +++++++++++++-----
arch/arm64/kvm/hyp/nvhe/mm.c | 86 ++++++-
arch/arm64/kvm/hyp/nvhe/setup.c | 2 +-
arch/arm64/kvm/hyp/pgtable.c | 6 -
arch/arm64/kvm/mmu.c | 5 +-
arch/arm64/kvm/pkvm.c | 129 +++++-----
11 files changed, 342 insertions(+), 159 deletions(-)
base-commit: d082ecbc71e9e0bf49883ee4afd435a77a5101b6
--
2.48.1.711.g2feabab25a-goog
