Messages in this thread Patch in this message | | | Date | Tue, 28 Jun 2022 22:09:36 +0000 | Subject | [PATCH v6 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 memory 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 | 10 ++++++++++ 1 file changed, 10 insertions(+)
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index 3b40f8d68fbb1..032821d77e920 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -2241,6 +2241,16 @@ static inline void kvm_handle_signal_exit(struct kvm_vcpu *vcpu) } #endif /* CONFIG_KVM_XFER_TO_GUEST_WORK */ +/* + * If more than one page is being (un)accounted, @virt must be the address of + * the first page of a block of pages what 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 -- 2.37.0.rc0.161.g10f37bed90-goog
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