From patchwork Fri Feb 28 10:25:16 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vincent Donnefort X-Patchwork-Id: 13996200 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 951FEC19776 for ; Fri, 28 Feb 2025 10:36:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Type:Cc:To:From: Subject:Message-ID:Mime-Version:Date:Reply-To:Content-Transfer-Encoding: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Owner; 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d=google.com; s=20230601; t=1740738344; x=1741343144; darn=lists.infradead.org; h=cc:to:from:subject:message-id:mime-version:date:from:to:cc:subject :date:message-id:reply-to; bh=yZiixOEWYaq9wXDNP/eyMuN3kYA78c0bj/N2a/BCkL0=; b=AWqEGY5nr8GDiOMwNiH3UaImX8vW/vjsQWrIHeH91l35hbudq+RH34i6rJFb3UPQqS ZU3hZHMpSTD5+Mn5gnerIepuxJ5MrCq+XgCz6rxwSZ0lx17jxWBhlis9boMtpploEyiV 3H6YIah6BKjXKJNnDjeX7uf7U53ZfV80I+mE579G0Bu7xWaqyrC2uBnLFYweJwkOyRpN W1CB9vBnEbetsmDG31frWlOtrkITIUfFvSX6d13TM93T2y4UrM1Vs97sAabgOcCt2P3n 4nqo/2MDVnfIL74KLjab7OE0H4Bv6R5dfakVpzlWF48c4OnWkQd1pVsEtjxPfkYV8KZz 3Iiw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1740738344; x=1741343144; h=cc:to:from:subject:message-id:mime-version:date:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=yZiixOEWYaq9wXDNP/eyMuN3kYA78c0bj/N2a/BCkL0=; b=F7NvDWm7cFaY78Y9M/Wgwx27TxbiOR1wI1WvzoX/wxR/MBwFHcyUJsBru+yu0BeY1q H5pqE0ba3SENP0ljl/4yHkZPbLUJBHnFVL8kq5xVu7r98nQUIFTz2bR/VVCRZ4DpUF/A aSzAnUsfkQmkY+QHfqnCeMUtjgtcYxy7f//Ydx4VP/R9/SGq0nSjLMDtgq7vBc7Wo4sS aP8XJkPNr5Z0Mo0s6ro1NBSg+oFdZoqhQK/YbpNMT8ptPW1j7VJFtS4Pmm+WKuln/jkG i5RJ2tOInGrewNrexr56bqgu8K7dGt5V81M26YK+x5CnSiKQ2qY9D09bZhBxqZ60U15A E3lg== X-Forwarded-Encrypted: i=1; AJvYcCVyN3XFaJKLjxuRAjzKR74+70FHJ9ne9j5DwwduGyfccdkOYwNRq4RpDML0WiCNuFxLnZigVnEr0SslE5dgwh1S@lists.infradead.org X-Gm-Message-State: AOJu0YwuKEiQEhVx40D8wYgklOvI99P1Ja0s4j3x+xfYp8fYN6XeCjBZ t22Qt1oAZTYylBpzpxfD24vPVjDd6eCdpHaIVKV7+01UZ8erB1TdlHVuyMPVreqCuxyIL4+xVEg tGE2C2xSzNhSFlwpMUQ== X-Google-Smtp-Source: AGHT+IHep39Sd5eGh94BVx9flL1lcXtt9eAIYrt+u2ImlSXt8vPoiGgYIDF5HPduTl3nT7mvrQjfLoUwEOlBu9qB X-Received: from wmbec10.prod.google.com ([2002:a05:600c:610a:b0:439:804a:4a89]) (user=vdonnefort job=prod-delivery.src-stubby-dispatcher) by 2002:a05:600c:1551:b0:439:9f12:1809 with SMTP id 5b1f17b1804b1-43ba6766c16mr20538485e9.20.1740738344390; Fri, 28 Feb 2025 02:25:44 -0800 (PST) Date: Fri, 28 Feb 2025 10:25:16 +0000 Mime-Version: 1.0 X-Mailer: git-send-email 2.48.1.711.g2feabab25a-goog Message-ID: <20250228102530.1229089-1-vdonnefort@google.com> Subject: [PATCH 0/9] Stage-2 huge mappings for pKVM np-guests From: Vincent Donnefort To: maz@kernel.org, oliver.upton@linux.dev, joey.gouly@arm.com, suzuki.poulose@arm.com, yuzenghui@huawei.com, catalin.marinas@arm.com, will@kernel.org Cc: qperret@google.com, linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev, linux-kernel@vger.kernel.org, kernel-team@android.com, Vincent Donnefort X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250228_022546_215512_11019F80 X-CRM114-Status: GOOD ( 10.37 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Hi all, This series adds support for stage-2 huge mappings (PMD_SIZE) to pKVM np-guests, that is installing PMD-level mappings in the stage-2, whenever the stage-1 is backed by either Hugetlbfs or THPs. The last patch of that series is an optimization for CMOs using a shared PMD_SIZE fixmap. --- Vincent Quentin Perret (2): KVM: arm64: Convert pkvm_mappings to interval tree KVM: arm64: Add a range to pkvm_mappings Vincent Donnefort (7): KVM: arm64: Handle huge mappings for np-guest CMOs KVM: arm64: Add a range to __pkvm_host_share_guest() KVM: arm64: Add a range to __pkvm_host_unshare_guest() KVM: arm64: Add a range to __pkvm_host_wrprotect_guest() KVM: arm64: Add a range to __pkvm_host_test_clear_young_guest() KVM: arm64: Stage-2 huge mappings for np-guests KVM: arm64: np-guest CMOs with PMD_SIZE fixmap arch/arm64/include/asm/kvm_pgtable.h | 7 +- arch/arm64/include/asm/kvm_pkvm.h | 2 + arch/arm64/kvm/hyp/include/nvhe/mem_protect.h | 8 +- arch/arm64/kvm/hyp/include/nvhe/mm.h | 4 +- arch/arm64/kvm/hyp/nvhe/hyp-main.c | 16 +- arch/arm64/kvm/hyp/nvhe/mem_protect.c | 218 +++++++++++++----- arch/arm64/kvm/hyp/nvhe/mm.c | 86 ++++++- arch/arm64/kvm/hyp/nvhe/setup.c | 2 +- arch/arm64/kvm/hyp/pgtable.c | 6 - arch/arm64/kvm/mmu.c | 5 +- arch/arm64/kvm/pkvm.c | 129 +++++------ 11 files changed, 326 insertions(+), 157 deletions(-) base-commit: d082ecbc71e9e0bf49883ee4afd435a77a5101b6