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 3CDBAF531DE for ; Tue, 14 Apr 2026 00:04:13 +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=iZQGwEHwBQUY6iK+AfcutNF4R8Ig24CfmNfmXwDw7qg=; b=oTlBUoRVsnIyoVOiZNAxckZcCw YKneJLmxBKYxuySIDbGnzvvijtBnn3ZQvvn+XhSU8WruURvB5rLCmmZfDR5FTQQqyrjF+wC4B5NSw 0hq44hYQGP4utIkSKVjgtz0Ngn2bab0nnyeQfhvs4lvrItKufM7Rjg5iz73zczE+p2OmHFDX0hej9 iRhy82wtH3yv14gJJn0+T9wz0d8c4DhIDF9xA7Gz62UzZsSKSpQYO3UXMFB1mjz24Yjj/T9ceix2P 1crWrACO2n74s+7umMnUATnZ4NuQVuDMEZcvA9KTXmItkTLCdnDQyCYoZ0yLosd+ixut3UPAIAi2B +uXu3f8g==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1wCRGC-0000000GVK8-10Un; Tue, 14 Apr 2026 00:04:08 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1wCRG8-0000000GVIe-32A7 for linux-arm-kernel@lists.infradead.org; Tue, 14 Apr 2026 00:04:06 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 0C0914E26; Mon, 13 Apr 2026 17:03:54 -0700 (PDT) Received: from workstation-e142269.cambridge.arm.com (usa-sjc-imap-foss1.foss.arm.com [10.121.207.14]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 10E4F3F7B4; Mon, 13 Apr 2026 17:03:57 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=arm.com; s=foss; t=1776125039; bh=m6x/63nnfpg6KYUYTu5KqOD4nFrzdvwE6G7muugTYuY=; h=From:To:Cc:Subject:Date:From; b=pC5yaf0E+ADbte4ZRHujJmQZlq1k4KKzSDIIeiUoSp4HCnfLajY7PUTBZHYw06Tzo S37+n/p64em1CL0VSJnWZ2ux1ojw4vpypkOe3HrHQpaBQsRJKolUyXYuQjJ+stZui5 AVPOPMSJTdZfVDpZl1+Ci/ZgQR0S5EaWg7DcY8Rk= From: Wei-Lin Chang To: linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev, linux-kernel@vger.kernel.org Cc: Marc Zyngier , Oliver Upton , Joey Gouly , Suzuki K Poulose , Zenghui Yu , Catalin Marinas , Will Deacon , Wei-Lin Chang Subject: [PATCH v2 0/4] KVM: arm64: Handle unsupported guest translation granule sizes Date: Tue, 14 Apr 2026 01:03:30 +0100 Message-ID: <20260414000334.3947257-1-weilin.chang@arm.com> X-Mailer: git-send-email 2.43.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260413_170404_889839_42BC2F39 X-CRM114-Status: UNSURE ( 6.82 ) 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 Hi, This is v2 of fixing the granule size selection for software stage-1 and stage-2 walks. Thanks to Marc for the feedback on v1 ([1]). * Changes from v1: - Take the entire (v)tcr value for TGx decode helpers. - Rename vtcr_to_walk_info() to setup_s2_walk() as preparation, also pass vcpu as the argument instead of kvm. - Use TCR_* instead of TCR_EL1_* definitions. - Return unsigned int instead of u64 when returning a granule shift. - Split unit changes in get_guest_mapping_ttl() and compute_tlb_inval_range() into its own patch. Thanks! [1]: https://lore.kernel.org/kvmarm/20260406164618.3312473-1-weilin.chang@arm.com/ Wei-Lin Chang (4): KVM: arm64: nv: Rename vtcr_to_walk_info() to setup_s2_walk() KVM: arm64: Factor out TG0/1 decoding of VTCR and TCR KVM: arm64: nv: Use literal granule size in TLBI range calculation KVM: arm64: Fallback to a supported value for unsupported guest TGx arch/arm64/kvm/at.c | 125 ++++++++++++++++++++++++++-------- arch/arm64/kvm/nested.c | 144 +++++++++++++++++++++++++++------------- 2 files changed, 196 insertions(+), 73 deletions(-) -- 2.43.0