From patchwork Wed Jun 19 08:09:39 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: maobibo X-Patchwork-Id: 13703511 Received: from mail.loongson.cn (mail.loongson.cn [114.242.206.163]) by smtp.subspace.kernel.org (Postfix) with ESMTP id BA26B78C6B; Wed, 19 Jun 2024 08:09:50 +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=X9fq+TytPTRiGSsy0tPOelas49r7tSufq0TRUQ23xtauHmqZl7llNXMyZrAKwuMlP0l9cBZ+YStLaSyiDRQZI+OkU8k0c6KUyPwCYERXKnArPYSjS7HS0OUdEFMoiwYj7+rRRb3B5EV/viysK0xXRrsVZE5hrzkcQkfQPMZRY80= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1718784593; c=relaxed/simple; bh=z9uXT3mjp7dVxjD9jHEieTpNwIbwtbk+ig9PZbKnsfg=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=UIB5RThr3JtE+AAzxvpqs4JsxRFc7WcvzBvHNoHlTBVdLTtFYAaZhFFpN92M4n+PmcDPh3TObFvgfQS2kiDo/ZgmngFuF/XzYIeNztf6Q4ngnVbnkiCq3iVkHn/CZWTbKiUWzXO+BaeXNsod9M3EgWAtEo7HEC7q9/bzNFmowAA= 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 _____8Bx3+tHknJm9i4IAA--.17084S3; Wed, 19 Jun 2024 16:09:43 +0800 (CST) Received: from localhost.localdomain (unknown [10.2.5.213]) by localhost.localdomain (Coremail) with SMTP id AQAAf8AxjsdEknJmFeMoAA--.32907S7; Wed, 19 Jun 2024 16:09:42 +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 5/6] LoongArch: KVM: Add dirty bitmap initially all set support Date: Wed, 19 Jun 2024 16:09:39 +0800 Message-Id: <20240619080940.2690756-6-maobibo@loongson.cn> X-Mailer: git-send-email 2.39.3 In-Reply-To: <20240619080940.2690756-1-maobibo@loongson.cn> References: <20240619080940.2690756-1-maobibo@loongson.cn> Precedence: bulk X-Mailing-List: kvm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-CM-TRANSID: AQAAf8AxjsdEknJmFeMoAA--.32907S7 X-CM-SenderInfo: xpdruxter6z05rqj20fqof0/ X-Coremail-Antispam: 1Uk129KBjDUn29KB7ZKAUJUUUUU529EdanIXcx71UUUUU7KY7 ZEXasCq-sGcSsGvfJ3UbIjqfuFe4nvWSU5nxnvy29KBjDU0xBIdaVrnUUvcSsGvfC2Kfnx nUUI43ZEXa7xR_UUUUUUUUU== Add KVM_DIRTY_LOG_INITIALLY_SET support on LoongArch system, this feature comes from other architectures like x86 and arm64. Signed-off-by: Bibo Mao --- arch/loongarch/include/asm/kvm_host.h | 3 +++ arch/loongarch/kvm/mmu.c | 7 +++++++ 2 files changed, 10 insertions(+) diff --git a/arch/loongarch/include/asm/kvm_host.h b/arch/loongarch/include/asm/kvm_host.h index 32c4948f534f..309ce329b747 100644 --- a/arch/loongarch/include/asm/kvm_host.h +++ b/arch/loongarch/include/asm/kvm_host.h @@ -37,6 +37,9 @@ #define KVM_GUESTDBG_VALID_MASK \ (KVM_GUESTDBG_ENABLE | KVM_GUESTDBG_USE_SW_BP | KVM_GUESTDBG_SINGLESTEP) +#define KVM_DIRTY_LOG_MANUAL_CAPS \ + (KVM_DIRTY_LOG_MANUAL_PROTECT_ENABLE | KVM_DIRTY_LOG_INITIALLY_SET) + struct kvm_vm_stat { struct kvm_vm_stat_generic generic; u64 pages; diff --git a/arch/loongarch/kvm/mmu.c b/arch/loongarch/kvm/mmu.c index 7f04edfbe428..3b862f3a72cb 100644 --- a/arch/loongarch/kvm/mmu.c +++ b/arch/loongarch/kvm/mmu.c @@ -467,6 +467,13 @@ void kvm_arch_commit_memory_region(struct kvm *kvm, * kvm_arch_flush_shadow_memslot() */ if (!(old_flags & KVM_MEM_LOG_DIRTY_PAGES) && log_dirty_pages) { + /* + * Initially-all-set does not require write protecting any page + * because they're all assumed to be dirty. + */ + if (kvm_dirty_log_manual_protect_and_init_set(kvm)) + return; + spin_lock(&kvm->mmu_lock); /* Write protect GPA page table entries */ needs_flush = kvm_mkclean_gpa_pt(kvm, new->base_gfn,