From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.3 required=3.0 tests=BAYES_00,DKIMWL_WL_MED, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_IN_DEF_DKIM_WL autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4A28FC4320E for ; Tue, 3 Aug 2021 10:51:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3097360F94 for ; Tue, 3 Aug 2021 10:51:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235503AbhHCKwF (ORCPT ); Tue, 3 Aug 2021 06:52:05 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60870 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235059AbhHCKwD (ORCPT ); Tue, 3 Aug 2021 06:52:03 -0400 Received: from mail-ot1-x332.google.com (mail-ot1-x332.google.com [IPv6:2607:f8b0:4864:20::332]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5B69BC061757 for ; Tue, 3 Aug 2021 03:51:52 -0700 (PDT) Received: by mail-ot1-x332.google.com with SMTP id c7-20020a9d27870000b02904d360fbc71bso20226259otb.10 for ; Tue, 03 Aug 2021 03:51:52 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=WUxc5MB+Tq9hVrzE0x/FFFlgnTm10UXPxyV+GzRqkrU=; b=vEGntt1HAENdzj7VnMWn1fUB6jPHul3UT5wMP8S8Tb6a+ytZly9lG4RVFX/gfhuAng ARWKq53znmro8GS9NNAmLHkaTgkUuO8k85Ag/VbXZ5iKHpWVFt8fNh0VsYs8yV+MajiF uZjAnHsvi4AAm23IdbL96IZgZiQD6pEwQL4Fn3RgacC2PeQSLzbsDE8Q62jSHkvDXiBa FfSlcBIYI0w7/26HnO32BO3oEaMEXEQ4mxW+EibsRnAW7vinAxjvGtG+i2uYkASGVUTK fxG1ViAkBlY5o5sKtV7ntAKMPOsk0mJ/HbArVU1/HIgiDGYHsGaQwGWoHDIH3gxp9o20 SUHg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=WUxc5MB+Tq9hVrzE0x/FFFlgnTm10UXPxyV+GzRqkrU=; b=atk6ktWmgwPytEjfALkr4qWkkFWE7WxMQwJTqu0H6cco3oJXA/B2C/TNOaCVApe5ML d8qeoWSIzFiUfjFvdhBVxVeQvRVEXeVAdE6JqRrf6EilPELU0ELSvkATAwuuR20kVbWg md0WqdnM+oCTJfZ8sMLprQsNre91KL6KHbnBvGZgsf5So6PF6MoLaJt5ypifkq1Na9tj pIDLY9KSkDjdbhRzAwF6NbQRWuIgrNcwbFKZ+9gJpOJHpgQj7Z0Ss3CXK2viuWoRJNpT 5viPetXMGPb796Ul3SS7uUxe9tjexpTEQhaxtwjGxzclFx6GD+aKNenga7BLzBx/GOP/ dAhA== X-Gm-Message-State: AOAM532aIhgQFC1NH5S6qyjEcxnxgyrApqAi2Yhsixy6StWJY2W5Ki9j YwJoZz4e9L2Iv/oE91rogpLFzBps3UFC093wDvU4aw== X-Google-Smtp-Source: ABdhPJxvZT6TZfQaKjA6ySTyD8WZ6X/uh3f6kHY+xaZ5tPnSjzoDuCwt+rtQflv2skumMaQuDNbtoJ1oPtX8ZEwIuV4= X-Received: by 2002:a9d:202d:: with SMTP id n42mr1249812ota.52.1627987911567; Tue, 03 Aug 2021 03:51:51 -0700 (PDT) MIME-Version: 1.0 References: <20210729132818.4091769-1-qperret@google.com> <20210729132818.4091769-20-qperret@google.com> In-Reply-To: From: Fuad Tabba Date: Tue, 3 Aug 2021 12:51:14 +0200 Message-ID: Subject: Re: [PATCH v3 19/21] KVM: arm64: Refactor protected nVHE stage-1 locking To: Quentin Perret Cc: maz@kernel.org, james.morse@arm.com, alexandru.elisei@arm.com, suzuki.poulose@arm.com, catalin.marinas@arm.com, will@kernel.org, linux-arm-kernel@lists.infradead.org, kvmarm@lists.cs.columbia.edu, linux-kernel@vger.kernel.org, ardb@kernel.org, qwandor@google.com, dbrazdil@google.com, kernel-team@android.com Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Quentin, > > > +int pkvm_create_mappings(void *from, void *to, enum kvm_pgtable_prot prot) > > > +{ > > > + int ret; > > > + > > > + hyp_spin_lock(&pkvm_pgd_lock); > > > + ret = pkvm_create_mappings_locked(from, to, prot); > > > + hyp_spin_unlock(&pkvm_pgd_lock); > > > + > > > + return ret; > > > +} > > > + > > > > I'm wondering whether this patch should also refactor > > __pkvm_create_mappings. It doesn't quite do the exact same thing and > > has different parameters. > > Sorry, not sure I'm understanding your suggestion here. What do you > think should be done to __pkvm_create_mappings? Sorry, my comment wasn't very clear, and "refactor" is the wrong word. I think it should probably be renamed, because __pkvm_create_mappings isn't called by pkvm_create_mappings nor by pkvm_create_mappings_locked. It also has different parameters and behaves slightly differently. Thanks, /fuad > Cheers, > Quentin From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.6 required=3.0 tests=BAYES_00,DKIM_ADSP_CUSTOM_MED, DKIM_INVALID,DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3AA08C432BE for ; Tue, 3 Aug 2021 10:51:56 +0000 (UTC) Received: from mm01.cs.columbia.edu (mm01.cs.columbia.edu [128.59.11.253]) by mail.kernel.org (Postfix) with ESMTP id C194E61037 for ; Tue, 3 Aug 2021 10:51:55 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org C194E61037 Authentication-Results: mail.kernel.org; dmarc=fail (p=reject dis=none) header.from=google.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=lists.cs.columbia.edu Received: from localhost (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id 4332D4086F; 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Tue, 03 Aug 2021 03:51:51 -0700 (PDT) MIME-Version: 1.0 References: <20210729132818.4091769-1-qperret@google.com> <20210729132818.4091769-20-qperret@google.com> In-Reply-To: From: Fuad Tabba Date: Tue, 3 Aug 2021 12:51:14 +0200 Message-ID: Subject: Re: [PATCH v3 19/21] KVM: arm64: Refactor protected nVHE stage-1 locking To: Quentin Perret Cc: kernel-team@android.com, qwandor@google.com, maz@kernel.org, linux-kernel@vger.kernel.org, catalin.marinas@arm.com, will@kernel.org, kvmarm@lists.cs.columbia.edu, linux-arm-kernel@lists.infradead.org X-BeenThere: kvmarm@lists.cs.columbia.edu X-Mailman-Version: 2.1.14 Precedence: list List-Id: Where KVM/ARM decisions are made List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: kvmarm-bounces@lists.cs.columbia.edu Sender: kvmarm-bounces@lists.cs.columbia.edu Hi Quentin, > > > +int pkvm_create_mappings(void *from, void *to, enum kvm_pgtable_prot prot) > > > +{ > > > + int ret; > > > + > > > + hyp_spin_lock(&pkvm_pgd_lock); > > > + ret = pkvm_create_mappings_locked(from, to, prot); > > > + hyp_spin_unlock(&pkvm_pgd_lock); > > > + > > > + return ret; > > > +} > > > + > > > > I'm wondering whether this patch should also refactor > > __pkvm_create_mappings. It doesn't quite do the exact same thing and > > has different parameters. > > Sorry, not sure I'm understanding your suggestion here. What do you > think should be done to __pkvm_create_mappings? Sorry, my comment wasn't very clear, and "refactor" is the wrong word. I think it should probably be renamed, because __pkvm_create_mappings isn't called by pkvm_create_mappings nor by pkvm_create_mappings_locked. It also has different parameters and behaves slightly differently. Thanks, /fuad > Cheers, > Quentin _______________________________________________ kvmarm mailing list kvmarm@lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/kvmarm From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.5 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_ADSP_CUSTOM_MED,DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2B6AAC4338F for ; Tue, 3 Aug 2021 10:53:54 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id E25DA60F94 for ; 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charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Hi Quentin, > > > +int pkvm_create_mappings(void *from, void *to, enum kvm_pgtable_prot prot) > > > +{ > > > + int ret; > > > + > > > + hyp_spin_lock(&pkvm_pgd_lock); > > > + ret = pkvm_create_mappings_locked(from, to, prot); > > > + hyp_spin_unlock(&pkvm_pgd_lock); > > > + > > > + return ret; > > > +} > > > + > > > > I'm wondering whether this patch should also refactor > > __pkvm_create_mappings. It doesn't quite do the exact same thing and > > has different parameters. > > Sorry, not sure I'm understanding your suggestion here. What do you > think should be done to __pkvm_create_mappings? Sorry, my comment wasn't very clear, and "refactor" is the wrong word. I think it should probably be renamed, because __pkvm_create_mappings isn't called by pkvm_create_mappings nor by pkvm_create_mappings_locked. It also has different parameters and behaves slightly differently. Thanks, /fuad > Cheers, > Quentin _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel