From: Fuad Tabba <tabba@google.com>
To: kvmarm@lists.linux.dev
Cc: maz@kernel.org, will@kernel.org, qperret@google.com,
tabba@google.com, seanjc@google.com, alexandru.elisei@arm.com,
catalin.marinas@arm.com, philmd@linaro.org, james.morse@arm.com,
suzuki.poulose@arm.com, oliver.upton@linux.dev,
mark.rutland@arm.com, broonie@kernel.org, joey.gouly@arm.com,
rananta@google.com
Subject: [PATCH v1 41/44] KVM: arm64: Move pkvm_vcpu_init_traps() to hyp vcpu init
Date: Wed, 27 Mar 2024 17:35:28 +0000 [thread overview]
Message-ID: <20240327173531.1379685-42-tabba@google.com> (raw)
In-Reply-To: <20240327173531.1379685-1-tabba@google.com>
Move pkvm_vcpu_init_traps() to the initialization of the hyp
vcpu, and remove the associated hypercall. Traps need to be
initialized at every vcpu init. This simplifies the code and
saves a hypercall per vcpu initialization.
Signed-off-by: Fuad Tabba <tabba@google.com>
---
arch/arm64/include/asm/kvm_asm.h | 1 -
arch/arm64/kvm/arm.c | 8 --------
arch/arm64/kvm/hyp/include/nvhe/trap_handler.h | 2 --
arch/arm64/kvm/hyp/nvhe/hyp-main.c | 8 --------
arch/arm64/kvm/hyp/nvhe/pkvm.c | 4 +++-
5 files changed, 3 insertions(+), 20 deletions(-)
diff --git a/arch/arm64/include/asm/kvm_asm.h b/arch/arm64/include/asm/kvm_asm.h
index a6330460d9e5..f8caa2520903 100644
--- a/arch/arm64/include/asm/kvm_asm.h
+++ b/arch/arm64/include/asm/kvm_asm.h
@@ -75,7 +75,6 @@ enum __kvm_host_smccc_func {
__KVM_HOST_SMCCC_FUNC___kvm_timer_set_cntvoff,
__KVM_HOST_SMCCC_FUNC___vgic_v3_save_vmcr_aprs,
__KVM_HOST_SMCCC_FUNC___vgic_v3_restore_vmcr_aprs,
- __KVM_HOST_SMCCC_FUNC___pkvm_vcpu_init_traps,
__KVM_HOST_SMCCC_FUNC___pkvm_init_vm,
__KVM_HOST_SMCCC_FUNC___pkvm_init_vcpu,
__KVM_HOST_SMCCC_FUNC___pkvm_teardown_vm,
diff --git a/arch/arm64/kvm/arm.c b/arch/arm64/kvm/arm.c
index 79783db5dac8..828bbd9e2d94 100644
--- a/arch/arm64/kvm/arm.c
+++ b/arch/arm64/kvm/arm.c
@@ -776,14 +776,6 @@ int kvm_arch_vcpu_run_pid_change(struct kvm_vcpu *vcpu)
static_branch_inc(&userspace_irqchip_in_use);
}
- /*
- * Initialize traps for protected VMs.
- * NOTE: Move to run in EL2 directly, rather than via a hypercall, once
- * the code is in place for first run initialization at EL2.
- */
- if (kvm_vm_is_protected(kvm))
- kvm_call_hyp_nvhe(__pkvm_vcpu_init_traps, vcpu);
-
mutex_lock(&kvm->arch.config_lock);
set_bit(KVM_ARCH_FLAG_HAS_RAN_ONCE, &kvm->arch.flags);
mutex_unlock(&kvm->arch.config_lock);
diff --git a/arch/arm64/kvm/hyp/include/nvhe/trap_handler.h b/arch/arm64/kvm/hyp/include/nvhe/trap_handler.h
index 45a84f0ade04..1e6d995968a1 100644
--- a/arch/arm64/kvm/hyp/include/nvhe/trap_handler.h
+++ b/arch/arm64/kvm/hyp/include/nvhe/trap_handler.h
@@ -15,6 +15,4 @@
#define DECLARE_REG(type, name, ctxt, reg) \
type name = (type)cpu_reg(ctxt, (reg))
-void __pkvm_vcpu_init_traps(struct kvm_vcpu *vcpu);
-
#endif /* __ARM64_KVM_NVHE_TRAP_HANDLER_H__ */
diff --git a/arch/arm64/kvm/hyp/nvhe/hyp-main.c b/arch/arm64/kvm/hyp/nvhe/hyp-main.c
index b7d7ca966f2e..aa50f2cb9d09 100644
--- a/arch/arm64/kvm/hyp/nvhe/hyp-main.c
+++ b/arch/arm64/kvm/hyp/nvhe/hyp-main.c
@@ -270,13 +270,6 @@ static void handle___pkvm_prot_finalize(struct kvm_cpu_context *host_ctxt)
cpu_reg(host_ctxt, 1) = __pkvm_prot_finalize();
}
-static void handle___pkvm_vcpu_init_traps(struct kvm_cpu_context *host_ctxt)
-{
- DECLARE_REG(struct kvm_vcpu *, vcpu, host_ctxt, 1);
-
- __pkvm_vcpu_init_traps(kern_hyp_va(vcpu));
-}
-
static void handle___pkvm_init_vm(struct kvm_cpu_context *host_ctxt)
{
DECLARE_REG(struct kvm *, host_kvm, host_ctxt, 1);
@@ -332,7 +325,6 @@ static const hcall_t host_hcall[] = {
HANDLE_FUNC(__kvm_timer_set_cntvoff),
HANDLE_FUNC(__vgic_v3_save_vmcr_aprs),
HANDLE_FUNC(__vgic_v3_restore_vmcr_aprs),
- HANDLE_FUNC(__pkvm_vcpu_init_traps),
HANDLE_FUNC(__pkvm_init_vm),
HANDLE_FUNC(__pkvm_init_vcpu),
HANDLE_FUNC(__pkvm_teardown_vm),
diff --git a/arch/arm64/kvm/hyp/nvhe/pkvm.c b/arch/arm64/kvm/hyp/nvhe/pkvm.c
index 59c6b4317f29..bc520f9f6d07 100644
--- a/arch/arm64/kvm/hyp/nvhe/pkvm.c
+++ b/arch/arm64/kvm/hyp/nvhe/pkvm.c
@@ -201,7 +201,7 @@ static void pvm_init_trap_regs(struct kvm_vcpu *vcpu)
/*
* Initialize trap register values in protected mode.
*/
-void __pkvm_vcpu_init_traps(struct kvm_vcpu *vcpu)
+static void pkvm_vcpu_init_traps(struct kvm_vcpu *vcpu)
{
pvm_init_trap_regs(vcpu);
pvm_init_traps_aa64pfr0(vcpu);
@@ -332,6 +332,8 @@ static int init_pkvm_hyp_vcpu(struct pkvm_hyp_vcpu *hyp_vcpu,
hyp_vcpu->vcpu.arch.hw_mmu = &hyp_vm->kvm.arch.mmu;
hyp_vcpu->vcpu.arch.cflags = READ_ONCE(host_vcpu->arch.cflags);
+
+ pkvm_vcpu_init_traps(&hyp_vcpu->vcpu);
done:
if (ret)
unpin_host_vcpu(host_vcpu);
--
2.44.0.478.gd926399ef9-goog
next prev parent reply other threads:[~2024-03-27 17:37 UTC|newest]
Thread overview: 64+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-03-27 17:34 [PATCH v1 00/44] KVM: arm64: Preamble for pKVM Fuad Tabba
2024-03-27 17:34 ` [PATCH v1 01/44] KVM: arm64: Change kvm_handle_mmio_return() return polarity Fuad Tabba
2024-03-27 17:34 ` [PATCH v1 02/44] KVM: arm64: Use enum instead of helper for checking FP-state Fuad Tabba
2024-03-28 16:19 ` Mark Brown
2024-04-08 7:39 ` Marc Zyngier
2024-04-08 13:39 ` Fuad Tabba
2024-03-27 17:34 ` [PATCH v1 03/44] KVM: arm64: Move setting the page as dirty out of the critical section Fuad Tabba
2024-04-08 7:41 ` Marc Zyngier
2024-04-08 15:41 ` Fuad Tabba
2024-04-08 15:53 ` Marc Zyngier
2024-04-08 15:57 ` Fuad Tabba
2024-03-27 17:34 ` [PATCH v1 04/44] KVM: arm64: Avoid BUG-ing from the host abort path Fuad Tabba
2024-04-08 7:44 ` Marc Zyngier
2024-04-08 13:48 ` Fuad Tabba
2024-03-27 17:34 ` [PATCH v1 05/44] KVM: arm64: Check for PTE validity when checking for executable/cacheable Fuad Tabba
2024-03-27 17:34 ` [PATCH v1 06/44] KVM: arm64: Avoid BBM when changing only s/w bits in Stage-2 PTE Fuad Tabba
2024-03-27 17:34 ` [PATCH v1 07/44] KVM: arm64: Support TLB invalidation in guest context Fuad Tabba
2024-04-15 11:36 ` Marc Zyngier
2024-04-15 15:02 ` Fuad Tabba
2024-04-15 15:59 ` Marc Zyngier
2024-03-27 17:34 ` [PATCH v1 08/44] KVM: arm64: Simplify vgic-v3 hypercalls Fuad Tabba
2024-03-27 17:34 ` [PATCH v1 09/44] KVM: arm64: Add is_pkvm_initialized() helper Fuad Tabba
2024-03-27 17:34 ` [PATCH v1 10/44] KVM: arm64: Introduce predicates to check for protected state Fuad Tabba
2024-03-27 17:34 ` [PATCH v1 11/44] KVM: arm64: Split up nvhe/fixed_config.h Fuad Tabba
2024-03-27 17:34 ` [PATCH v1 12/44] KVM: arm64: Move pstate reset value definitions to kvm_arm.h Fuad Tabba
2024-03-27 17:35 ` [PATCH v1 13/44] KVM: arm64: Clarify rationale for ZCR_EL1 value restored on guest exit Fuad Tabba
2024-03-28 18:53 ` Mark Brown
2024-04-08 13:34 ` Fuad Tabba
2024-03-27 17:35 ` [PATCH v1 14/44] KVM: arm64: Refactor calculating SVE state size to use helpers Fuad Tabba
2024-03-28 18:57 ` Mark Brown
2024-04-08 13:35 ` Fuad Tabba
2024-03-27 17:35 ` [PATCH v1 15/44] KVM: arm64: Use active guest SVE vector length on guest restore Fuad Tabba
2024-03-28 19:17 ` Mark Brown
2024-04-09 9:34 ` Fuad Tabba
2024-03-27 17:35 ` [PATCH v1 16/44] KVM: arm64: Do not map the host fpsimd state to hyp in pKVM Fuad Tabba
2024-03-28 19:20 ` Mark Brown
2024-03-27 17:35 ` [PATCH v1 17/44] KVM: arm64: Move some kvm_psci functions to a shared header Fuad Tabba
2024-03-27 17:35 ` [PATCH v1 18/44] KVM: arm64: Refactor reset_mpidr() to extract its computation Fuad Tabba
2024-03-27 17:35 ` [PATCH v1 19/44] KVM: arm64: Refactor kvm_vcpu_enable_ptrauth() for hyp use Fuad Tabba
2024-03-27 17:35 ` [PATCH v1 20/44] KVM: arm64: Refactor enter_exception64() Fuad Tabba
2024-03-27 17:35 ` [PATCH v1 21/44] KVM: arm64: Add PC_UPDATE_REQ flags covering all PC updates Fuad Tabba
2024-03-27 17:35 ` [PATCH v1 22/44] KVM: arm64: Add vcpu flag copy primitive Fuad Tabba
2024-03-27 17:35 ` [PATCH v1 23/44] KVM: arm64: Introduce gfn_to_memslot_prot() Fuad Tabba
2024-03-27 17:35 ` [PATCH v1 24/44] KVM: arm64: Do not use the hva in kvm_handle_guest_abort() Fuad Tabba
2024-03-27 17:35 ` [PATCH v1 25/44] KVM: arm64: Introduce hyp_rwlock_t Fuad Tabba
2024-03-27 17:35 ` [PATCH v1 26/44] KVM: arm64: Add atomics-based checking refcount implementation at EL2 Fuad Tabba
2024-03-27 17:35 ` [PATCH v1 27/44] KVM: arm64: Use atomic refcount helpers for 'struct hyp_page::refcount' Fuad Tabba
2024-03-27 17:35 ` [PATCH v1 28/44] KVM: arm64: Remove locking from EL2 allocation fast-paths Fuad Tabba
2024-03-27 17:35 ` [PATCH v1 29/44] KVM: arm64: Reformat/beautify PTP hypercall documentation Fuad Tabba
2024-03-27 17:35 ` [PATCH v1 30/44] KVM: arm64: Rename firmware pseudo-register documentation file Fuad Tabba
2024-03-27 17:35 ` [PATCH v1 31/44] KVM: arm64: Document the KVM/arm64-specific calls in hypercalls.rst Fuad Tabba
2024-03-27 17:35 ` [PATCH v1 32/44] KVM: arm64: Prevent kmemleak from accessing .hyp.data Fuad Tabba
2024-03-27 17:35 ` [PATCH v1 33/44] KVM: arm64: Issue CMOs when tearing down guest s2 pages Fuad Tabba
2024-03-27 17:35 ` [PATCH v1 34/44] KVM: arm64: Do not set the virtual timer offset for protected vCPUs Fuad Tabba
2024-03-27 17:35 ` [PATCH v1 35/44] KVM: arm64: Fix comment for __pkvm_vcpu_init_traps() Fuad Tabba
2024-03-27 17:35 ` [PATCH v1 36/44] KVM: arm64: Do not re-initialize the KVM lock Fuad Tabba
2024-03-27 17:35 ` [PATCH v1 37/44] KVM: arm64: Check directly whether a vcpu is protected Fuad Tabba
2024-03-27 17:35 ` [PATCH v1 38/44] KVM: arm64: Trap debug break and watch from guest Fuad Tabba
2024-03-27 17:35 ` [PATCH v1 39/44] KVM: arm64: Restrict protected VM capabilities Fuad Tabba
2024-03-27 17:35 ` [PATCH v1 40/44] KVM: arm64: Do not support MTE for protected VMs Fuad Tabba
2024-03-27 17:35 ` Fuad Tabba [this message]
2024-03-27 17:35 ` [PATCH v1 42/44] KVM: arm64: Fix initializing traps in protected mode Fuad Tabba
2024-03-27 17:35 ` [PATCH v1 43/44] KVM: arm64: Advertise GICv3 sysreg interface to protected guests Fuad Tabba
2024-03-27 17:35 ` [PATCH v1 44/44] KVM: arm64: Force injection of a data abort on NISV MMIO exit Fuad Tabba
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