Messages in this thread Patch in this message | | | Date | Mon, 6 Jun 2022 22:20:56 +0000 | Subject | [PATCH v5 2/4] KVM: mmu: add a helper to account memory used by KVM MMU. | From | Yosry Ahmed <> |
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Add a helper to account pages used by KVM for page tables in secondary pagetable stats. This function will be used by subsequent patches in different archs.
Signed-off-by: Yosry Ahmed <yosryahmed@google.com> --- include/linux/kvm_host.h | 9 +++++++++ 1 file changed, 9 insertions(+)
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index 883e86ec8e8c4..645585f3a4bed 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -2246,6 +2246,15 @@ static inline void kvm_handle_signal_exit(struct kvm_vcpu *vcpu) } #endif /* CONFIG_KVM_XFER_TO_GUEST_WORK */ +/* + * If nr > 1, we assume virt is the address of the first page of a block of + * pages that were allocated together (i.e accounted together). + */ +static inline void kvm_account_pgtable_pages(void *virt, int nr) +{ + mod_lruvec_page_state(virt_to_page(virt), NR_SECONDARY_PAGETABLE, nr); +} + /* * This defines how many reserved entries we want to keep before we * kick the vcpu to the userspace to avoid dirty ring full. This -- 2.36.1.255.ge46751e96f-goog
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