From: Anshuman Khandual <anshuman.khandual@arm.com> To: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org Cc: akpm@linux-foundation.org, 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 <anshuman.khandual@arm.com> Subject: [RFC 00/10] arm64/mm: Enable FEAT_LPA2 (52 bits PA support on 4K|16K pages) Date: Wed, 14 Jul 2021 07:51:21 +0530 [thread overview] Message-ID: <1626229291-6569-1-git-send-email-anshuman.khandual@arm.com> (raw) 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 am currently working on the IDMAP fix for 16K and later will enable it for FEAT_LPA2 as well. This series applies on v5.14-rc1. 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 Anshuman Khandual (10): mm/mmap: 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 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 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 arch/arm64/Kconfig | 9 +++++- arch/arm64/include/asm/assembler.h | 48 ++++++++++++++++++++++------ arch/arm64/include/asm/kernel-pgtable.h | 4 +-- arch/arm64/include/asm/memory.h | 1 + arch/arm64/include/asm/pgtable-hwdef.h | 28 ++++++++++++++--- arch/arm64/include/asm/pgtable.h | 18 +++++++++-- arch/arm64/include/asm/sysreg.h | 9 +++--- arch/arm64/kernel/head.S | 55 ++++++++++++++++++++++++++------- arch/arm64/mm/mmu.c | 3 ++ arch/arm64/mm/pgd.c | 2 +- arch/arm64/mm/proc.S | 11 ++++++- arch/arm64/mm/ptdump.c | 26 ++++++++++++++-- mm/mmap.c | 26 +++++++++++++--- 13 files changed, 195 insertions(+), 45 deletions(-) -- 2.7.4
WARNING: multiple messages have this Message-ID (diff)
From: Anshuman Khandual <anshuman.khandual@arm.com> To: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org Cc: akpm@linux-foundation.org, 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 <anshuman.khandual@arm.com> Subject: [RFC 00/10] arm64/mm: Enable FEAT_LPA2 (52 bits PA support on 4K|16K pages) Date: Wed, 14 Jul 2021 07:51:21 +0530 [thread overview] Message-ID: <1626229291-6569-1-git-send-email-anshuman.khandual@arm.com> (raw) 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 am currently working on the IDMAP fix for 16K and later will enable it for FEAT_LPA2 as well. This series applies on v5.14-rc1. 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 Anshuman Khandual (10): mm/mmap: 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 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 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 arch/arm64/Kconfig | 9 +++++- arch/arm64/include/asm/assembler.h | 48 ++++++++++++++++++++++------ arch/arm64/include/asm/kernel-pgtable.h | 4 +-- arch/arm64/include/asm/memory.h | 1 + arch/arm64/include/asm/pgtable-hwdef.h | 28 ++++++++++++++--- arch/arm64/include/asm/pgtable.h | 18 +++++++++-- arch/arm64/include/asm/sysreg.h | 9 +++--- arch/arm64/kernel/head.S | 55 ++++++++++++++++++++++++++------- arch/arm64/mm/mmu.c | 3 ++ arch/arm64/mm/pgd.c | 2 +- arch/arm64/mm/proc.S | 11 ++++++- arch/arm64/mm/ptdump.c | 26 ++++++++++++++-- mm/mmap.c | 26 +++++++++++++--- 13 files changed, 195 insertions(+), 45 deletions(-) -- 2.7.4 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next reply other threads:[~2021-07-14 2:21 UTC|newest] Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-07-14 2:21 Anshuman Khandual [this message] 2021-07-14 2:21 ` [RFC 00/10] arm64/mm: Enable FEAT_LPA2 (52 bits PA support on 4K|16K pages) Anshuman Khandual 2021-07-14 2:21 ` [RFC 01/10] mm/mmap: Dynamically initialize protection_map[] Anshuman Khandual 2021-07-14 2:21 ` Anshuman Khandual 2021-07-14 2:21 ` [RFC 02/10] arm64/mm: Consolidate TCR_EL1 fields Anshuman Khandual 2021-07-14 2:21 ` Anshuman Khandual 2021-07-14 2:21 ` [RFC 03/10] arm64/mm: Add FEAT_LPA2 specific TCR_EL1.DS field Anshuman Khandual 2021-07-14 2:21 ` Anshuman Khandual 2021-07-14 2:21 ` [RFC 04/10] arm64/mm: Add FEAT_LPA2 specific ID_AA64MMFR0.TGRAN[2] Anshuman Khandual 2021-07-14 2:21 ` Anshuman Khandual 2021-07-14 2:21 ` [RFC 05/10] arm64/mm: Add CONFIG_ARM64_PA_BITS_52_[LPA|LPA2] Anshuman Khandual 2021-07-14 2:21 ` Anshuman Khandual 2021-07-14 2:21 ` [RFC 06/10] arm64/mm: Add FEAT_LPA2 specific encoding Anshuman Khandual 2021-07-14 2:21 ` Anshuman Khandual 2021-07-14 15:38 ` Steven Price 2021-07-14 15:38 ` Steven Price 2021-07-16 7:20 ` Anshuman Khandual 2021-07-16 7:20 ` Anshuman Khandual 2021-07-16 10:02 ` Steven Price 2021-07-16 10:02 ` Steven Price 2021-07-16 14:37 ` Anshuman Khandual 2021-07-16 14:37 ` Anshuman Khandual 2021-07-14 2:21 ` [RFC 07/10] arm64/mm: Detect and enable FEAT_LPA2 Anshuman Khandual 2021-07-14 2:21 ` Anshuman Khandual 2021-07-14 8:21 ` Suzuki K Poulose 2021-07-14 8:21 ` Suzuki K Poulose 2021-07-16 7:06 ` Anshuman Khandual 2021-07-16 7:06 ` Anshuman Khandual 2021-07-16 8:08 ` Suzuki K Poulose 2021-07-16 8:08 ` Suzuki K Poulose 2021-07-19 4:47 ` Anshuman Khandual 2021-07-19 4:47 ` Anshuman Khandual 2021-07-14 2:21 ` [RFC 08/10] arm64/mm: Add FEAT_LPA2 specific PTE_SHARED and PMD_SECT_S Anshuman Khandual 2021-07-14 2:21 ` Anshuman Khandual 2021-07-14 2:21 ` [RFC 09/10] arm64/mm: Add FEAT_LPA2 specific fallback (48 bits PA) when not implemented Anshuman Khandual 2021-07-14 2:21 ` Anshuman Khandual 2021-07-14 2:21 ` [RFC 10/10] arm64/mm: Enable CONFIG_ARM64_PA_BITS_52 on CONFIG_ARM64_[4K|16K]_PAGES Anshuman Khandual 2021-07-14 2:21 ` Anshuman Khandual
Reply instructions: You may reply publicly to this message via plain-text email using any one of the following methods: * Save the following mbox file, import it into your mail client, and reply-to-all from there: mbox Avoid top-posting and favor interleaved quoting: https://en.wikipedia.org/wiki/Posting_style#Interleaved_style * Reply using the --to, --cc, and --in-reply-to switches of git-send-email(1): git send-email \ --in-reply-to=1626229291-6569-1-git-send-email-anshuman.khandual@arm.com \ --to=anshuman.khandual@arm.com \ --cc=akpm@linux-foundation.org \ --cc=catalin.marinas@arm.com \ --cc=james.morse@arm.com \ --cc=linux-arm-kernel@lists.infradead.org \ --cc=linux-kernel@vger.kernel.org \ --cc=linux-mm@kvack.org \ --cc=mark.rutland@arm.com \ --cc=maz@kernel.org \ --cc=steven.price@arm.com \ --cc=suzuki.poulose@arm.com \ --cc=will@kernel.org \ /path/to/YOUR_REPLY https://kernel.org/pub/software/scm/git/docs/git-send-email.html * If your mail client supports setting the In-Reply-To header via mailto: links, try the mailto: linkBe sure your reply has a Subject: header at the top and a blank line before the message body.
This is an external index of several public inboxes, see mirroring instructions on how to clone and mirror all data and code used by this external index.