Series applied, thanks. Huacai On Mon, Jun 24, 2024 at 3:14 PM Bibo Mao <maobibo@xxxxxxxxxxx> wrote: > > This patchset is to solve VM migration issues, the first six patches are > mmu relative, the last patch is relative with vcpu interrupt status. > > 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 successfully migrates on my 3C5000 Dual-Way > machine with 32 cores. > 1. Pass to migrate when unixbench workload runs with 32 vcpus, for > some unixbench testcases there is much IPI sending. > 2. Pass to migrate with kernel compiling with 8 vcpus in VM > 3. Fail to migrate with kernel compiling with 32 vcpus in VM, since > there is to much memory writing operation, also there will be file > system inode inconsistent error after migration. > > --- > v2 ... v3: > 1. Merge patch 7 into this patchset since it is relative with VM > migration bugfix. > 2. Sync pending interrupt when getting ESTAT register, SW ESTAT > register is read after vcpu_put(). > 3. Add notation about smp_wmb() when update pmd entry, to elimate > checkpatch warning. > 4. Remove unnecessary modification about function kvm_pte_huge() > in patch 2. > 5. Add notation about secondary mmu tlb since it is firstly used here. > > v1 ... v2: > 1. Combine seperate patches into one patchset, all are relative with > migration. > 2. Mark page accessed without mmu_lock still, however with page ref > added > --- > Bibo Mao (7): > 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 > LoongArch: KVM: Sync pending interrupt when getting ESTAT from user > mode > > 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 | 29 ++++++++++++ > 6 files changed, 86 insertions(+), 23 deletions(-) > > > base-commit: 50736169ecc8387247fe6a00932852ce7b057083 > -- > 2.39.3 > >
