[PATCH v4 0/3] Count pKVM stage-2 usage in secondary pagetable stat
From: Vincent Donnefort
Date: Thu Mar 13 2025 - 07:41:23 EST
This series allows to count stage-2 related memory when using pKVM. The
value can be found in the /proc/meminfo field SecPageTables.
Changes since v3: https://lore.kernel.org/all/20250307113411.469018-1-vdonnefort@xxxxxxxxxx/
- Remove unnecessary void * cast (Marc)
- Rename reclaim_guest_pages() -> reclaim_pgtable_pages() (Marc)
- Remove unnecessary PAGE_ALIGN(pgd_sz)
Changes since v2: https://lore.kernel.org/all/20250304134347.369854-1-vdonnefort@xxxxxxxxxx/
- Pass a pointer to kvm_hyp_memcache instead of just the flags
(Oliver)
Changes since v1: https://lore.kernel.org/all/20250228121355.1377891-1-vdonnefort@xxxxxxxxxx/
- Flags to kvm_hyp_memcache
- Separate stage-2 memcache
- Account for PGD
Vincent Donnefort (3):
KVM: arm64: Add flags to kvm_hyp_memcache
KVM: arm64: Distinct pKVM teardown memcache for stage-2
KVM: arm64: Count pKVM stage-2 usage in secondary pagetable stats
arch/arm64/include/asm/kvm_host.h | 4 ++++
arch/arm64/kvm/hyp/include/nvhe/mem_protect.h | 2 +-
arch/arm64/kvm/hyp/nvhe/mem_protect.c | 2 +-
arch/arm64/kvm/hyp/nvhe/pkvm.c | 8 +++----
arch/arm64/kvm/mmu.c | 22 ++++++++++++++-----
arch/arm64/kvm/pkvm.c | 5 +++++
6 files changed, 32 insertions(+), 11 deletions(-)
base-commit: d082ecbc71e9e0bf49883ee4afd435a77a5101b6
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2.49.0.rc0.332.g42c0ae87b1-goog