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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id B1D5CC433EF for ; Thu, 30 Sep 2021 10:37:03 +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 826D9600D3 for ; Thu, 30 Sep 2021 10:37:03 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 826D9600D3 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:MIME-Version:List-Subscribe:List-Help: List-Post:List-Archive:List-Unsubscribe:List-Id:Message-Id:Date:Subject:Cc:To :From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=O4mlYWGH9Z9cJptzfhTlyvwgFBcC4CW3hOK+Ny9NXmI=; b=2Ylq/VtdcU3+nD Ed9EVPUTJLJSwwVUYoWpQD+4kHLB+itabZTCvyqqViT3Bd2Zd1bNq0WNvaTkDuZH6mNXXwvqPn0Cf PXFJ2O+Oir7vHaFfkdKXSP+OvkDC+d0+fWc5WtsMS9EeTkw1RHbhUoB8jNHndFA1+lwzimmDko9WE zdIlVYAQIis2IFivj43Ij7beGMFxu8Vcd0cFKF1zV8aPsb5w3OTSTPn55XEEbnPno95mJttMIjqpY zBAjOvZMSNJqoGCaRTu4QxVOyBm7nWcnWQUd1v8eDqSttOAORRh3eJluQVYa2qK2aOALcZrHlsk1A dVsFGKO4kYJOHIdpCf+g==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1mVtOT-00Dp9e-8O; Thu, 30 Sep 2021 10:34:25 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1mVtOP-00Dp8Q-A5 for linux-arm-kernel@lists.infradead.org; Thu, 30 Sep 2021 10:34:23 +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 F0419106F; Thu, 30 Sep 2021 03:34:15 -0700 (PDT) Received: from p8cg001049571a15.arm.com (unknown [10.163.73.203]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id C291D3F793; Thu, 30 Sep 2021 03:34:12 -0700 (PDT) From: Anshuman Khandual To: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Cc: suzuki.poulose@arm.com, mark.rutland@arm.com, will@kernel.org, catalin.marinas@arm.com, maz@kernel.org, james.morse@arm.com, steven.price@arm.com, Anshuman Khandual Subject: [RFC V3 00/13] arm64/mm: Enable FEAT_LPA2 (52 bits PA support on 4K|16K pages) Date: Thu, 30 Sep 2021 16:05:03 +0530 Message-Id: <1632998116-11552-1-git-send-email-anshuman.khandual@arm.com> X-Mailer: git-send-email 2.7.4 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210930_033421_486723_57693BFD X-CRM114-Status: GOOD ( 13.04 ) 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: , MIME-Version: 1.0 Content-Type: text/plain; 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 This series enables 52 bits PA support for 4K and 16K page configs via existing CONFIG_ARM64_PA_BITS_52, utilizing a new arch feature FEAT_LPA2 which is available from ARM v8.7. IDMAP needs changes to accommodate two new level of page tables in certain scenarios like (4K|39VA|52PA) but the same problem also exists for (16K|36VA|48PA) which needs fixing. I have sent a fix for 16K case [1] and later will enable it for FEAT_LPA2 as well. This series applies on v5.15-rc3. Testing: Build and boot tested (individual patches) on all existing and new FEAT_LPA2 enabled config combinations. Pending: - Enable IDMAP for FEAT_LPA2 - Enable 52 bit VA range on 4K/16K page sizes - Evaluate KVM and SMMU impacts from FEAT_LPA2 [1] https://lore.kernel.org/all/1632807225-20189-1-git-send-email-anshuman.khandual@arm.com/ Changes in RFC V3: - protection_map[] gets reinitialized in platform to avoid build failure per Catalin - Added __cpu_secondary_check52bitpa() - Added FEAT_LPA2 support during KVM stage-2 translation - Updated description for ARM64_PA_BITS_52 per Catalin - Added tags from last version Changes in RFC V2: https://lore.kernel.org/all/1627281445-12445-1-git-send-email-anshuman.khandual@arm.com/ - Changed FEAT_LPA2 presence qualifying criteria wrt ID_AA64MMFR0_TGRAN_LPA2 - Changed FEAT_LPA2 specific encoding which drops the additional tmp variable - Fixed [phys|pte]_to_[pte|phys]() helpers when FEAT_LPA2 is implemented Changes in RFC V1: https://lore.kernel.org/lkml/1626229291-6569-1-git-send-email-anshuman.khandual@arm.com/ Anshuman Khandual (13): arm64/mm: Dynamically initialize protection_map[] arm64/mm: Consolidate TCR_EL1 fields arm64/mm: Add FEAT_LPA2 specific TCR_EL1.DS field arm64/mm: Add FEAT_LPA2 specific VTCR_EL2.DS field arm64/mm: Add FEAT_LPA2 specific ID_AA64MMFR0.TGRAN[2] arm64/mm: Add CONFIG_ARM64_PA_BITS_52_[LPA|LPA2] arm64/mm: Add FEAT_LPA2 specific encoding arm64/mm: Detect and enable FEAT_LPA2 arm64/mm: Add __cpu_secondary_check52bitpa() arm64/mm: Add FEAT_LPA2 specific PTE_SHARED and PMD_SECT_S arm64/mm: Add FEAT_LPA2 specific fallback (48 bits PA) when not implemented arm64/mm: Enable CONFIG_ARM64_PA_BITS_52 on CONFIG_ARM64_[4K|16K]_PAGES KVM: arm64: Enable FEAT_LPA2 based 52 bits IPA size on 4K and 16K arch/arm64/Kconfig | 17 +++++++---- arch/arm64/include/asm/assembler.h | 42 +++++++++++++++++++++------ arch/arm64/include/asm/kernel-pgtable.h | 4 +-- arch/arm64/include/asm/kvm_arm.h | 1 + arch/arm64/include/asm/kvm_pgtable.h | 10 ++++++- arch/arm64/include/asm/memory.h | 1 + arch/arm64/include/asm/pgtable-hwdef.h | 28 ++++++++++++++---- arch/arm64/include/asm/pgtable-prot.h | 34 +++++++++++----------- arch/arm64/include/asm/pgtable.h | 18 ++++++++++-- arch/arm64/include/asm/smp.h | 1 + arch/arm64/include/asm/sysreg.h | 9 +++--- arch/arm64/kernel/head.S | 51 +++++++++++++++++++++++++++++++++ arch/arm64/kernel/smp.c | 2 ++ arch/arm64/kvm/hyp/pgtable.c | 25 ++++++++++++++-- arch/arm64/kvm/reset.c | 14 ++++++--- arch/arm64/mm/init.c | 22 ++++++++++++++ arch/arm64/mm/mmu.c | 3 ++ arch/arm64/mm/pgd.c | 2 +- arch/arm64/mm/proc.S | 11 ++++++- arch/arm64/mm/ptdump.c | 26 +++++++++++++++-- 20 files changed, 265 insertions(+), 56 deletions(-) -- 2.7.4 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel