[PATCH v2 0/6] LoongArch: KVM: Fix some issues relative with mmu

From: Bibo Mao
Date: Wed Jun 19 2024 - 04:10:32 EST


This patchset is mmu relative, it fixes potential issue about tlb flush
of secondary mmu and huge page selection etc. Also it hardens LoongArch
kvm mmu module.

With this patchset, VM migration is stabler than before.

Bibo Mao (6):
LoongArch: KVM: Delay secondary mmu tlb flush until guest entry
LoongArch: KVM: Select huge page only if secondary mmu supports it
LoongArch: KVM: Discard dirty page tracking on readonly memslot
LoongArch: KVM: Add memory barrier before update pmd entry
LoongArch: KVM: Add dirty bitmap initially all set support
LoongArch: KVM: Mark page accessed and dirty with page ref added

arch/loongarch/include/asm/kvm_host.h | 5 ++
arch/loongarch/include/asm/kvm_mmu.h | 2 +-
arch/loongarch/kvm/main.c | 1 +
arch/loongarch/kvm/mmu.c | 67 ++++++++++++++++++++-------
arch/loongarch/kvm/tlb.c | 5 +-
arch/loongarch/kvm/vcpu.c | 18 +++++++
6 files changed, 75 insertions(+), 23 deletions(-)


base-commit: 92e5605a199efbaee59fb19e15d6cc2103a04ec2
--
2.39.3