From: Steven Price <steven.price@arm.com> To: kvm@vger.kernel.org, kvmarm@lists.linux.dev Cc: Steven Price <steven.price@arm.com>, Catalin Marinas <catalin.marinas@arm.com>, Marc Zyngier <maz@kernel.org>, Will Deacon <will@kernel.org>, James Morse <james.morse@arm.com>, Oliver Upton <oliver.upton@linux.dev>, Suzuki K Poulose <suzuki.poulose@arm.com>, Zenghui Yu <yuzenghui@huawei.com>, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Joey Gouly <joey.gouly@arm.com>, Alexandru Elisei <alexandru.elisei@arm.com>, Christoffer Dall <christoffer.dall@arm.com>, Fuad Tabba <tabba@google.com>, linux-coco@lists.linux.dev, Ganapatrao Kulkarni <gankulkarni@os.amperecomputing.com> Subject: [PATCH v2 22/43] KVM: arm64: Handle realm VCPU load Date: Fri, 12 Apr 2024 09:42:48 +0100 [thread overview] Message-ID: <20240412084309.1733783-23-steven.price@arm.com> (raw) In-Reply-To: <20240412084309.1733783-1-steven.price@arm.com> When loading a realm VCPU much of the work is handled by the RMM so only some of the actions are required. Rearrange kvm_arch_vcpu_load() slightly so we can bail out early for a realm guest. Signed-off-by: Steven Price <steven.price@arm.com> --- arch/arm64/kvm/arm.c | 13 +++++++++---- 1 file changed, 9 insertions(+), 4 deletions(-) diff --git a/arch/arm64/kvm/arm.c b/arch/arm64/kvm/arm.c index e92afb3835f6..4fd58a1d3351 100644 --- a/arch/arm64/kvm/arm.c +++ b/arch/arm64/kvm/arm.c @@ -512,10 +512,6 @@ void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu) kvm_vgic_load(vcpu); kvm_timer_vcpu_load(vcpu); - if (has_vhe()) - kvm_vcpu_load_vhe(vcpu); - kvm_arch_vcpu_load_fp(vcpu); - kvm_vcpu_pmu_restore_guest(vcpu); if (kvm_arm_is_pvtime_enabled(&vcpu->arch)) kvm_make_request(KVM_REQ_RECORD_STEAL, vcpu); @@ -524,6 +520,15 @@ void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu) else vcpu_set_wfx_traps(vcpu); + /* No additional state needs to be loaded on Realmed VMs */ + if (vcpu_is_rec(vcpu)) + return; + + if (has_vhe()) + kvm_vcpu_load_vhe(vcpu); + kvm_arch_vcpu_load_fp(vcpu); + kvm_vcpu_pmu_restore_guest(vcpu); + if (vcpu_has_ptrauth(vcpu)) vcpu_ptrauth_disable(vcpu); kvm_arch_vcpu_load_debug_state_flags(vcpu); -- 2.34.1
WARNING: multiple messages have this Message-ID (diff)
From: Steven Price <steven.price@arm.com> To: kvm@vger.kernel.org, kvmarm@lists.linux.dev Cc: Steven Price <steven.price@arm.com>, Catalin Marinas <catalin.marinas@arm.com>, Marc Zyngier <maz@kernel.org>, Will Deacon <will@kernel.org>, James Morse <james.morse@arm.com>, Oliver Upton <oliver.upton@linux.dev>, Suzuki K Poulose <suzuki.poulose@arm.com>, Zenghui Yu <yuzenghui@huawei.com>, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Joey Gouly <joey.gouly@arm.com>, Alexandru Elisei <alexandru.elisei@arm.com>, Christoffer Dall <christoffer.dall@arm.com>, Fuad Tabba <tabba@google.com>, linux-coco@lists.linux.dev, Ganapatrao Kulkarni <gankulkarni@os.amperecomputing.com> Subject: [PATCH v2 22/43] KVM: arm64: Handle realm VCPU load Date: Fri, 12 Apr 2024 09:42:48 +0100 [thread overview] Message-ID: <20240412084309.1733783-23-steven.price@arm.com> (raw) In-Reply-To: <20240412084309.1733783-1-steven.price@arm.com> When loading a realm VCPU much of the work is handled by the RMM so only some of the actions are required. Rearrange kvm_arch_vcpu_load() slightly so we can bail out early for a realm guest. Signed-off-by: Steven Price <steven.price@arm.com> --- arch/arm64/kvm/arm.c | 13 +++++++++---- 1 file changed, 9 insertions(+), 4 deletions(-) diff --git a/arch/arm64/kvm/arm.c b/arch/arm64/kvm/arm.c index e92afb3835f6..4fd58a1d3351 100644 --- a/arch/arm64/kvm/arm.c +++ b/arch/arm64/kvm/arm.c @@ -512,10 +512,6 @@ void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu) kvm_vgic_load(vcpu); kvm_timer_vcpu_load(vcpu); - if (has_vhe()) - kvm_vcpu_load_vhe(vcpu); - kvm_arch_vcpu_load_fp(vcpu); - kvm_vcpu_pmu_restore_guest(vcpu); if (kvm_arm_is_pvtime_enabled(&vcpu->arch)) kvm_make_request(KVM_REQ_RECORD_STEAL, vcpu); @@ -524,6 +520,15 @@ void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu) else vcpu_set_wfx_traps(vcpu); + /* No additional state needs to be loaded on Realmed VMs */ + if (vcpu_is_rec(vcpu)) + return; + + if (has_vhe()) + kvm_vcpu_load_vhe(vcpu); + kvm_arch_vcpu_load_fp(vcpu); + kvm_vcpu_pmu_restore_guest(vcpu); + if (vcpu_has_ptrauth(vcpu)) vcpu_ptrauth_disable(vcpu); kvm_arch_vcpu_load_debug_state_flags(vcpu); -- 2.34.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2024-04-12 8:44 UTC|newest] Thread overview: 254+ messages / expand[flat|nested] mbox.gz Atom feed top 2024-04-12 8:40 [v2] Support for Arm CCA VMs on Linux Steven Price 2024-04-12 8:40 ` Steven Price 2024-04-11 18:54 ` Itaru Kitayama 2024-04-11 18:54 ` Itaru Kitayama 2024-04-15 8:14 ` Steven Price 2024-04-15 8:14 ` Steven Price 2024-04-12 8:41 ` [PATCH v2 00/14] arm64: Support for running as a guest in Arm CCA Steven Price 2024-04-12 8:41 ` Steven Price 2024-04-12 8:42 ` [PATCH v2 01/14] arm64: rsi: Add RSI definitions Steven Price 2024-04-12 8:42 ` Steven Price 2024-04-12 8:42 ` [PATCH v2 02/14] arm64: Detect if in a realm and set RIPAS RAM Steven Price 2024-04-12 8:42 ` Steven Price 2024-05-10 17:35 ` Catalin Marinas 2024-05-10 17:35 ` Catalin Marinas 2024-05-14 10:18 ` Suzuki K Poulose 2024-05-14 10:18 ` Suzuki K Poulose 2024-05-16 14:32 ` Catalin Marinas 2024-05-16 14:32 ` Catalin Marinas 2024-05-15 15:03 ` Steven Price 2024-05-15 15:03 ` Steven Price 2024-04-12 8:42 ` [PATCH v2 03/14] arm64: realm: Query IPA size from the RMM Steven Price 2024-04-12 8:42 ` Steven Price 2024-05-13 14:03 ` Catalin Marinas 2024-05-13 14:03 ` Catalin Marinas 2024-05-16 15:13 ` Steven Price 2024-05-16 15:13 ` Steven Price 2024-04-12 8:42 ` [PATCH v2 04/14] arm64: Mark all I/O as non-secure shared Steven Price 2024-04-12 8:42 ` Steven Price 2024-04-12 8:42 ` [PATCH v2 05/14] fixmap: Allow architecture overriding set_fixmap_io Steven Price 2024-04-12 8:42 ` Steven Price 2024-04-12 8:42 ` [PATCH v2 06/14] arm64: Override set_fixmap_io Steven Price 2024-04-12 8:42 ` Steven Price 2024-05-13 16:14 ` Catalin Marinas 2024-05-13 16:14 ` Catalin Marinas 2024-05-14 10:21 ` Suzuki K Poulose 2024-05-14 10:21 ` Suzuki K Poulose 2024-04-12 8:42 ` [PATCH v2 07/14] arm64: Make the PHYS_MASK_SHIFT dynamic Steven Price 2024-04-12 8:42 ` Steven Price 2024-05-13 16:38 ` Catalin Marinas 2024-05-13 16:38 ` Catalin Marinas 2024-05-16 15:34 ` Steven Price 2024-05-16 15:34 ` Steven Price 2024-04-12 8:42 ` [PATCH v2 08/14] arm64: Enforce bounce buffers for realm DMA Steven Price 2024-04-12 8:42 ` Steven Price 2024-05-13 16:56 ` Catalin Marinas 2024-05-13 16:56 ` Catalin Marinas 2024-04-12 8:42 ` [PATCH v2 09/14] arm64: Enable memory encrypt for Realms Steven Price 2024-04-12 8:42 ` Steven Price 2024-04-15 3:13 ` kernel test robot 2024-04-15 3:13 ` kernel test robot 2024-04-25 13:42 ` Suzuki K Poulose 2024-04-25 13:42 ` Suzuki K Poulose 2024-04-25 15:52 ` Steven Price 2024-04-25 15:52 ` Steven Price 2024-04-25 16:29 ` Suzuki K Poulose 2024-04-25 16:29 ` Suzuki K Poulose 2024-04-25 18:16 ` Emanuele Rocca 2024-04-25 18:16 ` Emanuele Rocca 2024-05-14 18:00 ` Catalin Marinas 2024-05-14 18:00 ` Catalin Marinas 2024-05-15 10:47 ` Suzuki K Poulose 2024-05-15 10:47 ` Suzuki K Poulose 2024-05-16 7:48 ` Catalin Marinas 2024-05-16 7:48 ` Catalin Marinas 2024-05-16 9:06 ` Suzuki K Poulose 2024-05-16 9:06 ` Suzuki K Poulose 2024-05-20 16:53 ` Catalin Marinas 2024-05-20 16:53 ` Catalin Marinas 2024-05-20 20:32 ` Michael Kelley 2024-05-20 20:32 ` Michael Kelley 2024-05-21 10:14 ` Catalin Marinas 2024-05-21 10:14 ` Catalin Marinas 2024-04-12 8:42 ` [PATCH v2 10/14] arm64: Force device mappings to be non-secure shared Steven Price 2024-04-12 8:42 ` Steven Price 2024-05-15 9:01 ` Catalin Marinas 2024-05-15 9:01 ` Catalin Marinas 2024-05-15 11:00 ` Suzuki K Poulose 2024-05-15 11:00 ` Suzuki K Poulose 2024-05-17 9:34 ` Catalin Marinas 2024-05-17 9:34 ` Catalin Marinas 2024-04-12 8:42 ` [PATCH v2 11/14] efi: arm64: Map Device with Prot Shared Steven Price 2024-04-12 8:42 ` Steven Price 2024-04-12 8:42 ` [PATCH v2 12/14] arm64: realm: Support nonsecure ITS emulation shared Steven Price 2024-04-12 8:42 ` Steven Price 2024-05-15 11:01 ` Catalin Marinas 2024-05-15 11:01 ` Catalin Marinas 2024-04-12 8:42 ` [PATCH v2 13/14] arm64: rsi: Interfaces to query attestation token Steven Price 2024-04-12 8:42 ` Steven Price 2024-05-15 11:10 ` Catalin Marinas 2024-05-15 11:10 ` Catalin Marinas 2024-04-12 8:42 ` [PATCH v2 14/14] virt: arm-cca-guest: TSM_REPORT support for realms Steven Price 2024-04-12 8:42 ` Steven Price 2024-04-24 13:06 ` Thomas Fossati 2024-04-24 13:06 ` Thomas Fossati 2024-04-24 13:27 ` Suzuki K Poulose 2024-04-24 13:27 ` Suzuki K Poulose 2024-04-24 13:19 ` Suzuki K Poulose 2024-04-24 13:19 ` Suzuki K Poulose 2024-04-12 8:42 ` [PATCH v2 00/43] arm64: Support for Arm CCA in KVM Steven Price 2024-04-12 8:42 ` Steven Price 2024-04-12 8:42 ` [PATCH v2 01/43] KVM: Prepare for handling only shared mappings in mmu_notifier events Steven Price 2024-04-12 8:42 ` Steven Price 2024-04-25 9:48 ` Fuad Tabba 2024-04-25 9:48 ` Fuad Tabba 2024-04-25 15:58 ` Steven Price 2024-04-25 15:58 ` Steven Price 2024-04-25 22:56 ` Sean Christopherson 2024-04-25 22:56 ` Sean Christopherson 2024-04-12 8:42 ` [PATCH v2 02/43] kvm: arm64: pgtable: Track the number of pages in the entry level Steven Price 2024-04-12 8:42 ` Steven Price 2024-04-12 8:42 ` [PATCH v2 03/43] kvm: arm64: Include kvm_emulate.h in kvm/arm_psci.h Steven Price 2024-04-12 8:42 ` Steven Price 2024-04-12 8:42 ` [PATCH v2 04/43] arm64: RME: Handle Granule Protection Faults (GPFs) Steven Price 2024-04-12 8:42 ` Steven Price 2024-04-16 11:17 ` Suzuki K Poulose 2024-04-16 11:17 ` Suzuki K Poulose 2024-04-18 13:17 ` Steven Price 2024-04-18 13:17 ` Steven Price 2024-04-12 8:42 ` [PATCH v2 05/43] arm64: RME: Add SMC definitions for calling the RMM Steven Price 2024-04-12 8:42 ` Steven Price 2024-04-16 12:38 ` Suzuki K Poulose 2024-04-16 12:38 ` Suzuki K Poulose 2024-04-18 13:17 ` Steven Price 2024-04-18 13:17 ` Steven Price 2024-04-12 8:42 ` [PATCH v2 06/43] arm64: RME: Add wrappers for RMI calls Steven Price 2024-04-12 8:42 ` Steven Price 2024-04-16 13:14 ` Suzuki K Poulose 2024-04-16 13:14 ` Suzuki K Poulose 2024-04-19 11:18 ` Steven Price 2024-04-19 11:18 ` Steven Price 2024-04-12 8:42 ` [PATCH v2 07/43] arm64: RME: Check for RME support at KVM init Steven Price 2024-04-12 8:42 ` Steven Price 2024-04-16 13:30 ` Suzuki K Poulose 2024-04-16 13:30 ` Suzuki K Poulose 2024-04-22 15:39 ` Steven Price 2024-04-22 15:39 ` Steven Price 2024-04-12 8:42 ` [PATCH v2 08/43] arm64: RME: Define the user ABI Steven Price 2024-04-12 8:42 ` Steven Price 2024-04-12 8:42 ` [PATCH v2 09/43] arm64: RME: ioctls to create and configure realms Steven Price 2024-04-12 8:42 ` Steven Price 2024-04-17 9:51 ` Suzuki K Poulose 2024-04-17 9:51 ` Suzuki K Poulose 2024-04-22 16:33 ` Steven Price 2024-04-22 16:33 ` Steven Price 2024-04-18 16:04 ` Suzuki K Poulose 2024-04-18 16:04 ` Suzuki K Poulose 2024-04-12 8:42 ` [PATCH v2 10/43] kvm: arm64: Expose debug HW register numbers for Realm Steven Price 2024-04-12 8:42 ` Steven Price 2024-04-12 8:42 ` [PATCH v2 11/43] arm64: kvm: Allow passing machine type in KVM creation Steven Price 2024-04-12 8:42 ` Steven Price 2024-04-17 10:20 ` Suzuki K Poulose 2024-04-17 10:20 ` Suzuki K Poulose 2024-04-12 8:42 ` [PATCH v2 12/43] arm64: RME: Keep a spare page delegated to the RMM Steven Price 2024-04-12 8:42 ` Steven Price 2024-04-17 10:19 ` Suzuki K Poulose 2024-04-17 10:19 ` Suzuki K Poulose 2024-04-12 8:42 ` [PATCH v2 13/43] arm64: RME: RTT handling Steven Price 2024-04-12 8:42 ` Steven Price 2024-04-17 13:37 ` Suzuki K Poulose 2024-04-17 13:37 ` Suzuki K Poulose 2024-04-24 10:59 ` Steven Price 2024-04-24 10:59 ` Steven Price 2024-04-12 8:42 ` [PATCH v2 14/43] arm64: RME: Allocate/free RECs to match vCPUs Steven Price 2024-04-12 8:42 ` Steven Price 2024-04-18 9:23 ` Suzuki K Poulose 2024-04-18 9:23 ` Suzuki K Poulose 2024-04-12 8:42 ` [PATCH v2 15/43] arm64: RME: Support for the VGIC in realms Steven Price 2024-04-12 8:42 ` Steven Price 2024-04-12 8:42 ` [PATCH v2 16/43] KVM: arm64: Support timers in realm RECs Steven Price 2024-04-12 8:42 ` Steven Price 2024-04-18 9:30 ` Suzuki K Poulose 2024-04-18 9:30 ` Suzuki K Poulose 2024-04-12 8:42 ` [PATCH v2 17/43] arm64: RME: Allow VMM to set RIPAS Steven Price 2024-04-12 8:42 ` Steven Price 2024-04-19 9:34 ` Suzuki K Poulose 2024-04-19 9:34 ` Suzuki K Poulose 2024-04-19 10:20 ` Suzuki K Poulose 2024-04-19 10:20 ` Suzuki K Poulose 2024-05-01 15:47 ` Steven Price 2024-05-01 15:47 ` Steven Price 2024-05-02 10:16 ` Suzuki K Poulose 2024-05-02 10:16 ` Suzuki K Poulose 2024-04-25 9:53 ` Fuad Tabba 2024-04-25 9:53 ` Fuad Tabba 2024-05-01 14:27 ` Jean-Philippe Brucker 2024-05-01 14:27 ` Jean-Philippe Brucker 2024-05-01 14:56 ` Suzuki K Poulose 2024-05-01 14:56 ` Suzuki K Poulose 2024-04-12 8:42 ` [PATCH v2 18/43] arm64: RME: Handle realm enter/exit Steven Price 2024-04-12 8:42 ` Steven Price 2024-04-19 13:00 ` Suzuki K Poulose 2024-04-19 13:00 ` Suzuki K Poulose 2024-04-12 8:42 ` [PATCH v2 19/43] KVM: arm64: Handle realm MMIO emulation Steven Price 2024-04-12 8:42 ` Steven Price 2024-04-12 8:42 ` [PATCH v2 20/43] arm64: RME: Allow populating initial contents Steven Price 2024-04-12 8:42 ` Steven Price 2024-04-19 13:17 ` Suzuki K Poulose 2024-04-19 13:17 ` Suzuki K Poulose 2024-04-12 8:42 ` [PATCH v2 21/43] arm64: RME: Runtime faulting of memory Steven Price 2024-04-12 8:42 ` Steven Price 2024-04-25 10:43 ` Fuad Tabba 2024-04-25 10:43 ` Fuad Tabba 2024-04-12 8:42 ` Steven Price [this message] 2024-04-12 8:42 ` [PATCH v2 22/43] KVM: arm64: Handle realm VCPU load Steven Price 2024-04-12 8:42 ` [PATCH v2 23/43] KVM: arm64: Validate register access for a Realm VM Steven Price 2024-04-12 8:42 ` Steven Price 2024-04-12 8:42 ` [PATCH v2 24/43] KVM: arm64: Handle Realm PSCI requests Steven Price 2024-04-12 8:42 ` Steven Price 2024-04-12 8:42 ` [PATCH v2 25/43] KVM: arm64: WARN on injected undef exceptions Steven Price 2024-04-12 8:42 ` Steven Price 2024-04-12 8:42 ` [PATCH v2 26/43] arm64: Don't expose stolen time for realm guests Steven Price 2024-04-12 8:42 ` Steven Price 2024-04-12 8:42 ` [PATCH v2 27/43] arm64: rme: allow userspace to inject aborts Steven Price 2024-04-12 8:42 ` Steven Price 2024-04-12 8:42 ` [PATCH v2 28/43] arm64: rme: support RSI_HOST_CALL Steven Price 2024-04-12 8:42 ` Steven Price 2024-04-12 8:42 ` [PATCH v2 29/43] arm64: rme: Allow checking SVE on VM instance Steven Price 2024-04-12 8:42 ` Steven Price 2024-04-12 8:42 ` [PATCH v2 30/43] arm64: RME: Always use 4k pages for realms Steven Price 2024-04-12 8:42 ` Steven Price 2024-04-12 8:42 ` [PATCH v2 31/43] arm64: rme: Prevent Device mappings for Realms Steven Price 2024-04-12 8:42 ` Steven Price 2024-04-12 8:42 ` [PATCH v2 32/43] arm_pmu: Provide a mechanism for disabling the physical IRQ Steven Price 2024-04-12 8:42 ` Steven Price 2024-04-12 8:42 ` [PATCH v2 33/43] arm64: rme: Enable PMU support with a realm guest Steven Price 2024-04-12 8:42 ` Steven Price 2024-04-13 23:44 ` kernel test robot 2024-04-13 23:44 ` kernel test robot 2024-04-18 16:06 ` Suzuki K Poulose 2024-04-18 16:06 ` Suzuki K Poulose 2024-04-12 8:43 ` [PATCH v2 34/43] kvm: rme: Hide KVM_CAP_READONLY_MEM for realm guests Steven Price 2024-04-12 8:43 ` Steven Price 2024-04-12 8:43 ` [PATCH v2 35/43] arm64: RME: Propagate number of breakpoints and watchpoints to userspace Steven Price 2024-04-12 8:43 ` Steven Price 2024-04-12 8:43 ` [PATCH v2 36/43] arm64: RME: Set breakpoint parameters through SET_ONE_REG Steven Price 2024-04-12 8:43 ` Steven Price 2024-04-12 8:43 ` [PATCH v2 37/43] arm64: RME: Initialize PMCR.N with number counter supported by RMM Steven Price 2024-04-12 8:43 ` Steven Price 2024-04-12 8:43 ` [PATCH v2 38/43] arm64: RME: Propagate max SVE vector length from RMM Steven Price 2024-04-12 8:43 ` Steven Price 2024-04-12 8:43 ` [PATCH v2 39/43] arm64: RME: Configure max SVE vector length for a Realm Steven Price 2024-04-12 8:43 ` Steven Price 2024-04-12 8:43 ` [PATCH v2 40/43] arm64: RME: Provide register list for unfinalized RME RECs Steven Price 2024-04-12 8:43 ` Steven Price 2024-04-12 8:43 ` [PATCH v2 41/43] arm64: RME: Provide accurate register list Steven Price 2024-04-12 8:43 ` Steven Price 2024-04-12 8:43 ` [PATCH v2 42/43] arm64: kvm: Expose support for private memory Steven Price 2024-04-12 8:43 ` Steven Price 2024-04-25 14:44 ` Fuad Tabba 2024-04-25 14:44 ` Fuad Tabba 2024-04-12 8:43 ` [PATCH v2 43/43] KVM: arm64: Allow activating realms Steven Price 2024-04-12 8:43 ` Steven Price 2024-04-12 16:52 ` [v2] Support for Arm CCA VMs on Linux Jean-Philippe Brucker 2024-04-12 16:52 ` Jean-Philippe Brucker
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