From patchwork Wed Jun 19 08:09:34 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: maobibo X-Patchwork-Id: 13703510 Received: from mail.loongson.cn (mail.loongson.cn [114.242.206.163]) by smtp.subspace.kernel.org (Postfix) with ESMTP id B1174763FD; Wed, 19 Jun 2024 08:09:49 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=114.242.206.163 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1718784593; cv=none; b=KcvRXVa6EVJwl5xGP9nKPq3zIkgAAD31lCaaTCosiq7BePFAVRkG9UAR/2wPRr6kdYJZHEdaSNZP4X8tROyUKSUl8e5GXTGnaFOhJBi2/NA0uK+qsubS+Ymm2WHqd/RBDyvA53k6OJTxQ6FHoMpAmGJRPhFyzD5bD2wUXPaIE54= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1718784593; c=relaxed/simple; bh=ucv3KYT8GmcqLA6tPY2/YUBms/UIyzv/AoH2wW1Qt9w=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=r7DHAcRLmigjFd8ea+3G1fnR2J+3LPE26j8IuS+zd9M19p7mqXNer2+xIN2kSj5ihEorTDUpH9xxQiw0Q9WdSGAGIUpVIvV3+nOCQZTLPdJAHTulZdjClQpqJD8jBwaRpa7V16bNOm7wVvKanTp3JcTAUeTpmDt/AAqk7Pag1Rw= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=loongson.cn; spf=pass smtp.mailfrom=loongson.cn; arc=none smtp.client-ip=114.242.206.163 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=loongson.cn Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=loongson.cn Received: from loongson.cn (unknown [10.2.5.213]) by gateway (Coremail) with SMTP id _____8BxrOpFknJm3S4IAA--.32924S3; Wed, 19 Jun 2024 16:09:41 +0800 (CST) Received: from localhost.localdomain (unknown [10.2.5.213]) by localhost.localdomain (Coremail) with SMTP id AQAAf8AxjsdEknJmFeMoAA--.32907S2; Wed, 19 Jun 2024 16:09:40 +0800 (CST) From: Bibo Mao To: Tianrui Zhao , Huacai Chen Cc: WANG Xuerui , Sean Christopherson , kvm@vger.kernel.org, loongarch@lists.linux.dev, linux-kernel@vger.kernel.org Subject: [PATCH v2 0/6] LoongArch: KVM: Fix some issues relative with mmu Date: Wed, 19 Jun 2024 16:09:34 +0800 Message-Id: <20240619080940.2690756-1-maobibo@loongson.cn> X-Mailer: git-send-email 2.39.3 Precedence: bulk X-Mailing-List: kvm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-CM-TRANSID: AQAAf8AxjsdEknJmFeMoAA--.32907S2 X-CM-SenderInfo: xpdruxter6z05rqj20fqof0/ X-Coremail-Antispam: 1Uk129KBjDUn29KB7ZKAUJUUUUU529EdanIXcx71UUUUU7KY7 ZEXasCq-sGcSsGvfJ3UbIjqfuFe4nvWSU5nxnvy29KBjDU0xBIdaVrnUUvcSsGvfC2Kfnx nUUI43ZEXa7xR_UUUUUUUUU== 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