[PATCH] KVM: arm64: Count pKVM stage-2 usage in secondary pagetable stats
From: Vincent Donnefort <hidden>
Date: 2025-02-28 12:14:01
Also in:
kvmarm, lkml
Subsystem:
arm64 port (aarch64 architecture), kernel virtual machine for arm64 (kvm/arm64), the rest · Maintainers:
Catalin Marinas, Will Deacon, Marc Zyngier, Oliver Upton, Linus Torvalds
Count the pages used by pKVM for the guest stage-2 in memory stats under secondary pagetable stats, similarly to what the VHE mode does. Signed-off-by: Vincent Donnefort <redacted>
diff --git a/arch/arm64/kvm/mmu.c b/arch/arm64/kvm/mmu.c
index 1f55b0c7b11d..c2e022c41313 100644
--- a/arch/arm64/kvm/mmu.c
+++ b/arch/arm64/kvm/mmu.c@@ -1088,12 +1088,18 @@ void kvm_free_stage2_pgd(struct kvm_s2_mmu *mmu) static void hyp_mc_free_fn(void *addr, void *unused) { + kvm_account_pgtable_pages(addr, -1); free_page((unsigned long)addr); } static void *hyp_mc_alloc_fn(void *unused) { - return (void *)__get_free_page(GFP_KERNEL_ACCOUNT); + void *addr = (void *)__get_free_page(GFP_KERNEL_ACCOUNT); + + if (addr) + kvm_account_pgtable_pages(addr, 1); + + return addr; } void free_hyp_memcache(struct kvm_hyp_memcache *mc)
base-commit: d082ecbc71e9e0bf49883ee4afd435a77a5101b6 -- 2.48.1.711.g2feabab25a-goog