* [PATCH] KVM: arm64: account pKVM reclaim against the VM mm
@ 2026-06-21 21:31 Bradley Morgan
0 siblings, 0 replies; only message in thread
From: Bradley Morgan @ 2026-06-21 21:31 UTC (permalink / raw)
To: Marc Zyngier, Oliver Upton
Cc: Fuad Tabba, Joey Gouly, Steffen Eiden, Suzuki K Poulose,
Zenghui Yu, Catalin Marinas, Will Deacon, linux-arm-kernel,
kvmarm, linux-kernel, Bradley Morgan
Protected guest faults charge long term pins to the VM's mm. Teardown
can run later from file release, where current->mm may be unrelated.
Drop the charge from kvm->mm instead.
Fixes: 4e6e03f9eadd ("KVM: arm64: Hook up reclaim hypercall to pkvm_pgtable_stage2_destroy()")
Signed-off-by: Bradley Morgan <include@grrlz.net>
---
arch/arm64/kvm/pkvm.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm64/kvm/pkvm.c b/arch/arm64/kvm/pkvm.c
index 053e4f733e4b..428723b1b0f5 100644
--- a/arch/arm64/kvm/pkvm.c
+++ b/arch/arm64/kvm/pkvm.c
@@ -352,7 +352,7 @@ static int __pkvm_pgtable_stage2_reclaim(struct kvm_pgtable *pgt, u64 start, u64
page = pfn_to_page(mapping->pfn);
WARN_ON_ONCE(mapping->nr_pages != 1);
unpin_user_pages_dirty_lock(&page, 1, true);
- account_locked_vm(current->mm, 1, false);
+ account_locked_vm(kvm->mm, 1, false);
pkvm_mapping_remove(mapping, &pgt->pkvm_mappings);
kfree(mapping);
}
--
2.53.0
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