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

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Message-Id: <20240619080940.2690756-1-maobibo@loongson.cn>
Date: Wed, 19 Jun 2024 16:09:34 +0800
From: Bibo Mao <maobibo@...ngson.cn>
To: Tianrui Zhao <zhaotianrui@...ngson.cn>,
	Huacai Chen <chenhuacai@...nel.org>
Cc: WANG Xuerui <kernel@...0n.name>,
	Sean Christopherson <seanjc@...gle.com>,
	kvm@...r.kernel.org,
	loongarch@...ts.linux.dev,
	linux-kernel@...r.kernel.org
Subject: [PATCH v2 0/6] LoongArch: KVM: Fix some issues relative with mmu

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