Count the pages used by KVM in arm64 for stage2 mmu in memory stats under secondary pagetable stats (e.g. "SecPageTables" in /proc/meminfo) to give better visibility into the memory consumption of KVM mmu in a similar way to how normal user page tables are accounted. Signed-off-by: Yosry Ahmed <yosryahmed@xxxxxxxxxx> Reviewed-by: Oliver Upton <oliver.upton@xxxxxxxxx> Reviewed-by: Marc Zyngier <maz@xxxxxxxxxx> ---
I see that you are not including the memory reserved for the host stage2 table when using protected KVM. Is this something worth adding? (See arch/arm64/kvm/pkvm.c:kvm_hyp_reserve()).
This reservation is done pretty early on in bootmem_init() so not sure if this could cause some init ordering issues that might be tricky to solve though.
Thanks, Ryan
