From: Anshuman Khandual <anshuman.khandual@arm.com> 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 <anshuman.khandual@arm.com> 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 [thread overview] Message-ID: <1632998116-11552-1-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 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
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 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 <anshuman.khandual@arm.com> 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 [thread overview] Message-ID: <1632998116-11552-1-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 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
next reply other threads:[~2021-09-30 10:34 UTC|newest] Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-09-30 10:35 Anshuman Khandual [this message] 2021-09-30 10:35 ` [RFC V3 00/13] arm64/mm: Enable FEAT_LPA2 (52 bits PA support on 4K|16K pages) Anshuman Khandual 2021-09-30 10:35 ` [RFC V3 01/13] arm64/mm: Dynamically initialize protection_map[] Anshuman Khandual 2021-09-30 10:35 ` Anshuman Khandual 2021-09-30 10:35 ` [RFC V3 02/13] arm64/mm: Consolidate TCR_EL1 fields Anshuman Khandual 2021-09-30 10:35 ` Anshuman Khandual 2021-09-30 10:35 ` [RFC V3 03/13] arm64/mm: Add FEAT_LPA2 specific TCR_EL1.DS field Anshuman Khandual 2021-09-30 10:35 ` Anshuman Khandual 2021-09-30 10:35 ` [RFC V3 04/13] arm64/mm: Add FEAT_LPA2 specific VTCR_EL2.DS field Anshuman Khandual 2021-09-30 10:35 ` Anshuman Khandual 2021-09-30 10:35 ` [RFC V3 05/13] arm64/mm: Add FEAT_LPA2 specific ID_AA64MMFR0.TGRAN[2] Anshuman Khandual 2021-09-30 10:35 ` Anshuman Khandual 2021-09-30 10:35 ` [RFC V3 06/13] arm64/mm: Add CONFIG_ARM64_PA_BITS_52_[LPA|LPA2] Anshuman Khandual 2021-09-30 10:35 ` Anshuman Khandual 2021-09-30 10:35 ` [RFC V3 07/13] arm64/mm: Add FEAT_LPA2 specific encoding Anshuman Khandual 2021-09-30 10:35 ` Anshuman Khandual 2021-10-12 10:41 ` Suzuki K Poulose 2021-10-12 10:41 ` Suzuki K Poulose 2021-10-13 2:55 ` Anshuman Khandual 2021-10-13 2:55 ` Anshuman Khandual 2021-09-30 10:35 ` [RFC V3 08/13] arm64/mm: Detect and enable FEAT_LPA2 Anshuman Khandual 2021-09-30 10:35 ` Anshuman Khandual 2021-09-30 10:35 ` [RFC V3 09/13] arm64/mm: Add __cpu_secondary_check52bitpa() Anshuman Khandual 2021-09-30 10:35 ` Anshuman Khandual 2021-09-30 10:35 ` [RFC V3 10/13] arm64/mm: Add FEAT_LPA2 specific PTE_SHARED and PMD_SECT_S Anshuman Khandual 2021-09-30 10:35 ` Anshuman Khandual 2021-09-30 10:35 ` [RFC V3 11/13] arm64/mm: Add FEAT_LPA2 specific fallback (48 bits PA) when not implemented Anshuman Khandual 2021-09-30 10:35 ` Anshuman Khandual 2021-09-30 10:35 ` [RFC V3 12/13] arm64/mm: Enable CONFIG_ARM64_PA_BITS_52 on CONFIG_ARM64_[4K|16K]_PAGES Anshuman Khandual 2021-09-30 10:35 ` Anshuman Khandual 2021-09-30 10:35 ` [RFC V3 13/13] KVM: arm64: Enable FEAT_LPA2 based 52 bits IPA size on 4K and 16K Anshuman Khandual 2021-09-30 10:35 ` Anshuman Khandual 2021-10-11 10:16 ` Marc Zyngier 2021-10-11 10:16 ` Marc Zyngier 2021-10-12 4:24 ` Anshuman Khandual 2021-10-12 4:24 ` Anshuman Khandual 2021-10-12 8:30 ` Marc Zyngier 2021-10-12 8:30 ` Marc Zyngier 2021-10-13 3:28 ` Anshuman Khandual 2021-10-13 3:28 ` Anshuman Khandual
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