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 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 AC197CD6E6D for ; Thu, 4 Jun 2026 15:13:02 +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-Transfer-Encoding: MIME-Version:Message-ID:Date:Subject:Cc:To:From:Reply-To:Content-Type: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Owner; bh=SjCybsytUAOTYLqtwuovzu83bCVlxAZgYvPdM4tCjnY=; b=wS6ltw7cH3yXhMaMw/o6076JJy Sa9qBccNMJg2I16tj7M+KDPAPvrXHmDmZYEqCaTdVEl86LXUnSg3iR5rckNlWWQ2yigptYGHn3923 3ISp2qlh9nCJ9Ckk8b+H8Up/Wzu/rZDCk9yoUJDIWDcI3App9DSmRZN0/680IZv3H4Me0syplg6Va mdDHPkJdz/6OpZwdpBkblHcAcjAoDj7d8zfxEjIe1w8LXFvs99Yp5UP0/cku4+qMjsBvhrekji5Qv dgP3f6uYs4LrJCuJBFD9Hvrc9Z40/3DtxDwBmK/px90TXtI+TQ9Akmlay8rKUH0alB0ITIat2Ex3l nGeWyaSw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1wV9ka-0000000GyDo-0Hrc; Thu, 04 Jun 2026 15:12:52 +0000 Received: from mail-pl1-x62c.google.com ([2607:f8b0:4864:20::62c]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1wV9kY-0000000GyCy-09H1 for linux-arm-kernel@lists.infradead.org; Thu, 04 Jun 2026 15:12:51 +0000 Received: by mail-pl1-x62c.google.com with SMTP id d9443c01a7336-2c0c3184c71so6624655ad.1 for ; Thu, 04 Jun 2026 08:12:49 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1780585969; x=1781190769; darn=lists.infradead.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=SjCybsytUAOTYLqtwuovzu83bCVlxAZgYvPdM4tCjnY=; b=erp3hhROttmefYe8RLJUNGGGxhxmKC8VrdOc1jQZpgagA0ZOVt+ZJtVK+GwLadUyZw sXdb5vr29Um/bV4QEYcwyF80cb8hnREA2Dfv0ynnZGRonFkXhLsArFy5iDKHBABsPsTY R5F1wuD87YBrqs5wGgoeHYWH8IPKKcWnPMWufWKiU4LO2aZaqsjeNvI1aGqCJQnJMQZu H+Q6GSBYr/Kejx2EKo43Sq6ShSVds3aNAkbnc+UPxwtsvD3TpnDUIOCbTeb07I1Jf2wq c2T9z5rZW9XwyJKtMYisptlC4yKBw7HTYjAIj1uNxMf1SPTzkVTX33pOySoPLB9CPVHm 4p0g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1780585969; x=1781190769; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-gg:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to; bh=SjCybsytUAOTYLqtwuovzu83bCVlxAZgYvPdM4tCjnY=; b=pKOyYwjYGbY9igb8wLFavnDHEud1SJ6//y/Ze75B0IyPPovI8KGYlFEmPXK2t0yLVq d9tTsVtsSzd+fZb/VE4mgBf3182Th6Z2EfdLtiuBMpqXBjkjAffqiNvzOTP6XEON7joI 9XQ7MGFs10FuwHSLSGNSuMnVPcggunmSL+d9IHxPfE5PKhYb1UjjrjhCSFo5IU3leYH+ OjLlO6c37WU8sd4P8iFt2oEtmUtQ4I3VQEIxMVI277luPp5/a5CKalR74GwOkKjy+3ke 8NE2x6bfwUVOieFjm2+W9nBaThHo6fjcdhpNT/6JWV9gdwk1vbI3if0cgbqra0j28QLh pCYw== X-Gm-Message-State: AOJu0Ywh6xoMhqy+oiLsQhOzcqsq3l32C6Dp3dU3UzNMvdzV4NpOkiPT Jr8ecHXx3qlIJrpET/p7pt5NzdGbJRsWlDD/jKEYHIrha7Ev62hNsTnj X-Gm-Gg: Acq92OG70lF20tZhNlgIkLRujJnh3LaCEsYqQYHzPFLHY7Gd5D4vRCuyZucd5OQSnqE UAIHOOW6orxyT+f57MW6B/qjXNAWeKH5gdF/80nSG7IsSCLRngARr0hneqpuafdGgK2WqJe1Nsj ISxnbd1XE8cj1TSqvwpLGNcr5LjO0yVvXnxTiDcRxb/lMiSDfFkYFwI+9xtdLC/+b775nce8+wY dEqc9e7mdSsZoYi5TCJIdwNNAs1NwjaBJ2ARuYCSnspCd+wxtEbS7EJ2fPjMlG40eMfGpWtFGOr xUnvSPjoaIMyzT+iYtPmTiNJoe08H/vWhHLKuHsGXAEMjSA9ykCQjrbYU7G+83ZapTKt8bIkJMj VVFlRvgYg2Ts4azVKN8dBENXTEQHFAMmUefuTk/iTKvPvPbqmXChdYJkPLnYFAdhWcFgZefKs99 NGgVucHiszpfKReZpi4xZVd7K5W8/LyxJzyVPDEBYErlvwjIrp9Um7F/8g X-Received: by 2002:a17:903:1b28:b0:2c0:c625:4019 with SMTP id d9443c01a7336-2c163fadcdemr90406655ad.25.1780585968885; Thu, 04 Jun 2026 08:12:48 -0700 (PDT) Received: from v4bel.. ([58.123.110.97]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2c1664a67b0sm62705105ad.80.2026.06.04.08.12.46 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 04 Jun 2026 08:12:48 -0700 (PDT) From: Hyunwoo Kim To: tabba@google.com, maz@kernel.org, oupton@kernel.org, joey.gouly@arm.com, seiden@linux.ibm.com, suzuki.poulose@arm.com, yuzenghui@huawei.com, catalin.marinas@arm.com, will@kernel.org Cc: linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev, imv4bel@gmail.com Subject: [PATCH v2 0/2] KVM: arm64: Sanitise host vCPU fields copied in flush_hyp_vcpu() Date: Fri, 5 Jun 2026 00:12:01 +0900 Message-ID: <20260604151210.1304051-1-imv4bel@gmail.com> X-Mailer: git-send-email 2.43.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260604_081250_070727_E3F49B8A X-CRM114-Status: UNSURE ( 7.38 ) X-CRM114-Notice: Please train this message. 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 flush_hyp_vcpu() copies the host vCPU context and vGIC state into the hyp's private vCPU on every run. This series sanitises two fields that it currently copies verbatim (host -> EL2): __hyp_running_vcpu is cleared in the guest context, and used_lrs is bounded by the number of implemented list registers. v1 -> v2: split into two patches, one per field, per review. Hyunwoo Kim (2): KVM: arm64: Clear __hyp_running_vcpu when flushing the pKVM hyp vCPU KVM: arm64: Bound used_lrs when flushing the pKVM hyp vCPU arch/arm64/kvm/hyp/nvhe/hyp-main.c | 11 +++++++++++ 1 file changed, 11 insertions(+) -- 2.43.0