From: Christoffer Dall <christoffer.dall@linaro.org> To: "Paolo Bonzini" <pbonzini@redhat.com>, "Radim Krčmář" <rkrcmar@redhat.com> Cc: kvmarm@lists.cs.columbia.edu, linux-arm-kernel@lists.infradead.org, kvm@vger.kernel.org, Marc Zyngier <marc.zyngier@arm.com>, Suzuki K Poulose <suzuki.poulose@arm.com> Subject: [PULL 17/29] arm64: kvm: Add support for 16K pages Date: Wed, 11 May 2016 15:30:10 +0200 [thread overview] Message-ID: <1462973422-10021-18-git-send-email-christoffer.dall@linaro.org> (raw) In-Reply-To: <1462973422-10021-1-git-send-email-christoffer.dall@linaro.org> From: Suzuki K Poulose <suzuki.poulose@arm.com> Now that we can handle stage-2 page tables independent of the host page table levels, wire up the 16K page support. Cc: Marc Zyngier <marc.zyngier@arm.com> Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org> Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> --- arch/arm64/include/asm/kvm_arm.h | 13 +++++++++++-- arch/arm64/kvm/Kconfig | 1 - 2 files changed, 11 insertions(+), 3 deletions(-) diff --git a/arch/arm64/include/asm/kvm_arm.h b/arch/arm64/include/asm/kvm_arm.h index 1281d98..c6cbb36 100644 --- a/arch/arm64/include/asm/kvm_arm.h +++ b/arch/arm64/include/asm/kvm_arm.h @@ -114,6 +114,7 @@ #define VTCR_EL2_PS_MASK TCR_EL2_PS_MASK #define VTCR_EL2_TG0_MASK TCR_TG0_MASK #define VTCR_EL2_TG0_4K TCR_TG0_4K +#define VTCR_EL2_TG0_16K TCR_TG0_16K #define VTCR_EL2_TG0_64K TCR_TG0_64K #define VTCR_EL2_SH0_MASK TCR_SH0_MASK #define VTCR_EL2_SH0_INNER TCR_SH0_INNER @@ -139,7 +140,7 @@ * (see hyp-init.S). * * Note that when using 4K pages, we concatenate two first level page tables - * together. + * together. With 16K pages, we concatenate 16 first level page tables. * * The magic numbers used for VTTBR_X in this patch can be found in Tables * D4-23 and D4-25 in ARM DDI 0487A.b. @@ -157,7 +158,15 @@ */ #define VTCR_EL2_TGRAN_FLAGS (VTCR_EL2_TG0_64K | VTCR_EL2_SL0_LVL1) #define VTTBR_X_TGRAN_MAGIC 38 -#else +#elif defined(CONFIG_ARM64_16K_PAGES) +/* + * Stage2 translation configuration: + * 16kB pages (TG0 = 2) + * 2 level page tables (SL = 1) + */ +#define VTCR_EL2_TGRAN_FLAGS (VTCR_EL2_TG0_16K | VTCR_EL2_SL0_LVL1) +#define VTTBR_X_TGRAN_MAGIC 42 +#else /* 4K */ /* * Stage2 translation configuration: * 4kB pages (TG0 = 0) diff --git a/arch/arm64/kvm/Kconfig b/arch/arm64/kvm/Kconfig index de7450d..aa2e34e 100644 --- a/arch/arm64/kvm/Kconfig +++ b/arch/arm64/kvm/Kconfig @@ -22,7 +22,6 @@ config KVM_ARM_VGIC_V3 config KVM bool "Kernel-based Virtual Machine (KVM) support" depends on OF - depends on !ARM64_16K_PAGES select MMU_NOTIFIER select PREEMPT_NOTIFIERS select ANON_INODES -- 2.1.2.330.g565301e.dirty
WARNING: multiple messages have this Message-ID (diff)
From: christoffer.dall@linaro.org (Christoffer Dall) To: linux-arm-kernel@lists.infradead.org Subject: [PULL 17/29] arm64: kvm: Add support for 16K pages Date: Wed, 11 May 2016 15:30:10 +0200 [thread overview] Message-ID: <1462973422-10021-18-git-send-email-christoffer.dall@linaro.org> (raw) In-Reply-To: <1462973422-10021-1-git-send-email-christoffer.dall@linaro.org> From: Suzuki K Poulose <suzuki.poulose@arm.com> Now that we can handle stage-2 page tables independent of the host page table levels, wire up the 16K page support. Cc: Marc Zyngier <marc.zyngier@arm.com> Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org> Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> --- arch/arm64/include/asm/kvm_arm.h | 13 +++++++++++-- arch/arm64/kvm/Kconfig | 1 - 2 files changed, 11 insertions(+), 3 deletions(-) diff --git a/arch/arm64/include/asm/kvm_arm.h b/arch/arm64/include/asm/kvm_arm.h index 1281d98..c6cbb36 100644 --- a/arch/arm64/include/asm/kvm_arm.h +++ b/arch/arm64/include/asm/kvm_arm.h @@ -114,6 +114,7 @@ #define VTCR_EL2_PS_MASK TCR_EL2_PS_MASK #define VTCR_EL2_TG0_MASK TCR_TG0_MASK #define VTCR_EL2_TG0_4K TCR_TG0_4K +#define VTCR_EL2_TG0_16K TCR_TG0_16K #define VTCR_EL2_TG0_64K TCR_TG0_64K #define VTCR_EL2_SH0_MASK TCR_SH0_MASK #define VTCR_EL2_SH0_INNER TCR_SH0_INNER @@ -139,7 +140,7 @@ * (see hyp-init.S). * * Note that when using 4K pages, we concatenate two first level page tables - * together. + * together. With 16K pages, we concatenate 16 first level page tables. * * The magic numbers used for VTTBR_X in this patch can be found in Tables * D4-23 and D4-25 in ARM DDI 0487A.b. @@ -157,7 +158,15 @@ */ #define VTCR_EL2_TGRAN_FLAGS (VTCR_EL2_TG0_64K | VTCR_EL2_SL0_LVL1) #define VTTBR_X_TGRAN_MAGIC 38 -#else +#elif defined(CONFIG_ARM64_16K_PAGES) +/* + * Stage2 translation configuration: + * 16kB pages (TG0 = 2) + * 2 level page tables (SL = 1) + */ +#define VTCR_EL2_TGRAN_FLAGS (VTCR_EL2_TG0_16K | VTCR_EL2_SL0_LVL1) +#define VTTBR_X_TGRAN_MAGIC 42 +#else /* 4K */ /* * Stage2 translation configuration: * 4kB pages (TG0 = 0) diff --git a/arch/arm64/kvm/Kconfig b/arch/arm64/kvm/Kconfig index de7450d..aa2e34e 100644 --- a/arch/arm64/kvm/Kconfig +++ b/arch/arm64/kvm/Kconfig @@ -22,7 +22,6 @@ config KVM_ARM_VGIC_V3 config KVM bool "Kernel-based Virtual Machine (KVM) support" depends on OF - depends on !ARM64_16K_PAGES select MMU_NOTIFIER select PREEMPT_NOTIFIERS select ANON_INODES -- 2.1.2.330.g565301e.dirty
next prev parent reply other threads:[~2016-05-11 13:32 UTC|newest] Thread overview: 69+ messages / expand[flat|nested] mbox.gz Atom feed top 2016-05-11 13:29 [PULL 00/29] KVM/ARM Changes for v4.7 Christoffer Dall 2016-05-11 13:29 ` Christoffer Dall 2016-05-11 13:29 ` [PULL 01/29] arm64: Reuse TCR field definitions for EL1 and EL2 Christoffer Dall 2016-05-11 13:29 ` Christoffer Dall 2016-05-11 13:29 ` [PULL 02/29] arm64: Cleanup VTCR_EL2 and VTTBR field values Christoffer Dall 2016-05-11 13:29 ` Christoffer Dall 2016-05-11 13:29 ` [PULL 03/29] kvm arm: Move fake PGD handling to arch specific files Christoffer Dall 2016-05-11 13:29 ` Christoffer Dall 2016-05-11 13:29 ` [PULL 04/29] arm64: Introduce pmd_thp_or_huge Christoffer Dall 2016-05-11 13:29 ` Christoffer Dall 2016-05-11 13:29 ` [PULL 05/29] kvm-arm: Replace kvm_pmd_huge with pmd_thp_or_huge Christoffer Dall 2016-05-11 13:29 ` Christoffer Dall 2016-05-11 13:29 ` [PULL 06/29] kvm-arm: Remove kvm_pud_huge() Christoffer Dall 2016-05-11 13:29 ` Christoffer Dall 2016-05-11 13:30 ` [PULL 07/29] kvm-arm: arm32: Introduce stage2 page table helpers Christoffer Dall 2016-05-11 13:30 ` Christoffer Dall 2016-05-11 13:30 ` [PULL 08/29] kvm-arm: arm: Introduce hyp page table empty checks Christoffer Dall 2016-05-11 13:30 ` Christoffer Dall 2016-05-11 13:30 ` [PULL 09/29] kvm-arm: arm64: Introduce stage2 page table helpers Christoffer Dall 2016-05-11 13:30 ` Christoffer Dall 2016-05-11 13:30 ` [PULL 10/29] kvm-arm: arm64: Introduce hyp page table empty checks Christoffer Dall 2016-05-11 13:30 ` Christoffer Dall 2016-05-11 13:30 ` [PULL 11/29] kvm-arm: Use explicit stage2 helper routines Christoffer Dall 2016-05-11 13:30 ` Christoffer Dall 2016-05-11 13:30 ` [PULL 12/29] kvm-arm: Add explicit hyp page table modifiers Christoffer Dall 2016-05-11 13:30 ` Christoffer Dall 2016-05-11 13:30 ` [PULL 13/29] kvm-arm: Add stage2 " Christoffer Dall 2016-05-11 13:30 ` Christoffer Dall 2016-05-11 13:30 ` [PULL 14/29] kvm-arm: Cleanup kvm_* wrappers Christoffer Dall 2016-05-11 13:30 ` Christoffer Dall 2016-05-11 13:30 ` [PULL 15/29] kvm: arm64: Get rid of fake page table levels Christoffer Dall 2016-05-11 13:30 ` Christoffer Dall 2016-05-11 13:30 ` [PULL 16/29] kvm-arm: Cleanup stage2 pgd handling Christoffer Dall 2016-05-11 13:30 ` Christoffer Dall 2016-05-11 13:30 ` Christoffer Dall [this message] 2016-05-11 13:30 ` [PULL 17/29] arm64: kvm: Add support for 16K pages Christoffer Dall 2016-05-11 13:30 ` [PULL 18/29] arm/arm64: KVM: Enforce Break-Before-Make on Stage-2 page tables Christoffer Dall 2016-05-11 13:30 ` Christoffer Dall 2016-05-11 13:30 ` Christoffer Dall 2016-05-11 13:30 ` [PULL 19/29] clocksource: arm_arch_timer: Gather KVM specific information in a structure Christoffer Dall 2016-05-11 13:30 ` Christoffer Dall 2016-05-11 13:30 ` [PULL 20/29] clocksource: arm_arch_timer: Extend arch_timer_kvm_info to get the virtual IRQ Christoffer Dall 2016-05-11 13:30 ` Christoffer Dall 2016-05-11 13:30 ` [PULL 21/29] irqchip/gic-v2: Gather ACPI specific data in a single structure Christoffer Dall 2016-05-11 13:30 ` Christoffer Dall 2016-05-11 13:30 ` [PULL 22/29] irqchip/gic-v2: Parse and export virtual GIC information Christoffer Dall 2016-05-11 13:30 ` Christoffer Dall 2016-05-11 13:30 ` [PULL 23/29] irqchip/gic-v3: Prefix all pr_* messages by "GICv3: " Christoffer Dall 2016-05-11 13:30 ` Christoffer Dall 2016-05-11 13:30 ` [PULL 24/29] irqchip/gic-v3: Gather all ACPI specific data in a single structure Christoffer Dall 2016-05-11 13:30 ` Christoffer Dall 2016-05-11 13:30 ` [PULL 25/29] irqchip/gic-v3: Parse and export virtual GIC information Christoffer Dall 2016-05-11 13:30 ` Christoffer Dall 2016-05-11 13:30 ` [PULL 26/29] KVM: arm/arm64: arch_timer: Rely on the arch timer to parse the firmware tables Christoffer Dall 2016-05-11 13:30 ` Christoffer Dall 2016-05-11 13:30 ` [PULL 27/29] KVM: arm/arm64: vgic: Rely on the GIC driver " Christoffer Dall 2016-05-11 13:30 ` Christoffer Dall 2016-05-11 13:30 ` [PULL 28/29] clocksource: arm_arch_timer: Remove arch_timer_get_timecounter Christoffer Dall 2016-05-11 13:30 ` Christoffer Dall 2016-05-11 13:30 ` [PULL 29/29] kvm: arm64: Enable hardware updates of the Access Flag for Stage 2 page tables Christoffer Dall 2016-05-11 13:30 ` Christoffer Dall 2016-05-11 15:23 ` [PULL 00/29] KVM/ARM Changes for v4.7 Paolo Bonzini 2016-05-11 15:23 ` Paolo Bonzini 2016-05-11 15:37 ` Marc Zyngier 2016-05-11 15:37 ` Marc Zyngier 2016-05-11 15:41 ` Paolo Bonzini 2016-05-11 15:41 ` Paolo Bonzini 2016-05-11 15:42 ` Christoffer Dall 2016-05-11 15:42 ` Christoffer Dall
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