Re: [PATCH v7 4/4] KVM: arm64/mmu: count KVM s2 mmu usage in secondary pagetable stats

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



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





[Index of Archives]     [Linux ARM Kernel]     [Linux ARM]     [Linux Omap]     [Fedora ARM]     [IETF Annouce]     [Security]     [Bugtraq]     [Linux OMAP]     [Linux MIPS]     [eCos]     [Asterisk Internet PBX]     [Linux API]     [Monitors]

  Powered by Linux