From: Andrew Scull <ascull@google.com>
To: kvmarm@lists.cs.columbia.edu
Cc: linux-arm-kernel@lists.infradead.org, kernel-team@android.com,
suzuki.poulose@arm.com, maz@kernel.org,
Sudeep Holla <sudeep.holla@arm.com>,
james.morse@arm.com, Andrew Scull <ascull@google.com>,
catalin.marinas@arm.com, will@kernel.org,
julien.thierry.kdev@gmail.com
Subject: [PATCH v3 01/18] KVM: arm64: Remove __activate_vm wrapper
Date: Thu, 3 Sep 2020 14:52:50 +0100 [thread overview]
Message-ID: <20200903135307.251331-2-ascull@google.com> (raw)
In-Reply-To: <20200903135307.251331-1-ascull@google.com>
The __activate_vm wrapper serves no useful function and has a misleading
name as it simply calls __load_guest_stage2 and does not touch
HCR_EL2.VM so remove it.
Also rename __deactivate_vm to __load_host_stage2 to match naming
pattern.
Signed-off-by: Andrew Scull <ascull@google.com>
---
arch/arm64/kvm/hyp/include/hyp/switch.h | 5 -----
arch/arm64/kvm/hyp/nvhe/switch.c | 8 ++++----
arch/arm64/kvm/hyp/vhe/switch.c | 10 +++++-----
3 files changed, 9 insertions(+), 14 deletions(-)
diff --git a/arch/arm64/kvm/hyp/include/hyp/switch.h b/arch/arm64/kvm/hyp/include/hyp/switch.h
index 5b6b8fa00f0a..0864f88bc840 100644
--- a/arch/arm64/kvm/hyp/include/hyp/switch.h
+++ b/arch/arm64/kvm/hyp/include/hyp/switch.h
@@ -126,11 +126,6 @@ static inline void ___deactivate_traps(struct kvm_vcpu *vcpu)
}
}
-static inline void __activate_vm(struct kvm_s2_mmu *mmu)
-{
- __load_guest_stage2(mmu);
-}
-
static inline bool __translate_far_to_hpfar(u64 far, u64 *hpfar)
{
u64 par, tmp;
diff --git a/arch/arm64/kvm/hyp/nvhe/switch.c b/arch/arm64/kvm/hyp/nvhe/switch.c
index 0970442d2dbc..3c9c065b3264 100644
--- a/arch/arm64/kvm/hyp/nvhe/switch.c
+++ b/arch/arm64/kvm/hyp/nvhe/switch.c
@@ -93,7 +93,7 @@ static void __deactivate_traps(struct kvm_vcpu *vcpu)
write_sysreg(CPTR_EL2_DEFAULT, cptr_el2);
}
-static void __deactivate_vm(struct kvm_vcpu *vcpu)
+static void __load_host_stage2(void)
{
write_sysreg(0, vttbr_el2);
}
@@ -194,7 +194,7 @@ int __kvm_vcpu_run(struct kvm_vcpu *vcpu)
__sysreg32_restore_state(vcpu);
__sysreg_restore_state_nvhe(guest_ctxt);
- __activate_vm(kern_hyp_va(vcpu->arch.hw_mmu));
+ __load_guest_stage2(kern_hyp_va(vcpu->arch.hw_mmu));
__activate_traps(vcpu);
__hyp_vgic_restore_state(vcpu);
@@ -219,7 +219,7 @@ int __kvm_vcpu_run(struct kvm_vcpu *vcpu)
__hyp_vgic_save_state(vcpu);
__deactivate_traps(vcpu);
- __deactivate_vm(vcpu);
+ __load_host_stage2();
__sysreg_restore_state_nvhe(host_ctxt);
@@ -253,7 +253,7 @@ void __noreturn hyp_panic(struct kvm_cpu_context *host_ctxt)
if (read_sysreg(vttbr_el2)) {
__timer_disable_traps(vcpu);
__deactivate_traps(vcpu);
- __deactivate_vm(vcpu);
+ __load_host_stage2();
__sysreg_restore_state_nvhe(host_ctxt);
}
diff --git a/arch/arm64/kvm/hyp/vhe/switch.c b/arch/arm64/kvm/hyp/vhe/switch.c
index c1da4f86ccac..6636522a8529 100644
--- a/arch/arm64/kvm/hyp/vhe/switch.c
+++ b/arch/arm64/kvm/hyp/vhe/switch.c
@@ -120,12 +120,12 @@ static int __kvm_vcpu_run_vhe(struct kvm_vcpu *vcpu)
* HCR_EL2.TGE.
*
* We have already configured the guest's stage 1 translation in
- * kvm_vcpu_load_sysregs_vhe above. We must now call __activate_vm
- * before __activate_traps, because __activate_vm configures
- * stage 2 translation, and __activate_traps clear HCR_EL2.TGE
- * (among other things).
+ * kvm_vcpu_load_sysregs_vhe above. We must now call
+ * __load_guest_stage2 before __activate_traps, because
+ * __load_guest_stage2 configures stage 2 translation, and
+ * __activate_traps clear HCR_EL2.TGE (among other things).
*/
- __activate_vm(vcpu->arch.hw_mmu);
+ __load_guest_stage2(vcpu->arch.hw_mmu);
__activate_traps(vcpu);
sysreg_restore_guest_state_vhe(guest_ctxt);
--
2.28.0.402.g5ffc5be6b7-goog
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next prev parent reply other threads:[~2020-09-03 13:54 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-03 13:52 [PATCH v3 00/18] Introduce separate nVHE hyp context Andrew Scull
2020-09-03 13:52 ` Andrew Scull [this message]
2020-09-03 13:52 ` [PATCH v3 02/18] KVM: arm64: Remove hyp_panic arguments Andrew Scull
2020-09-07 10:21 ` Marc Zyngier
2020-09-03 13:52 ` [PATCH v3 03/18] KVM: arm64: Remove kvm_host_data_t typedef Andrew Scull
2020-09-03 13:52 ` [PATCH v3 04/18] KVM: arm64: Restrict symbol aliasing to outside nVHE Andrew Scull
2020-09-07 10:38 ` Marc Zyngier
2020-09-08 10:13 ` Andrew Scull
2020-09-03 13:52 ` [PATCH v3 05/18] KVM: arm64: Save chosen hyp vector to a percpu variable Andrew Scull
2020-09-03 13:52 ` [PATCH v3 06/18] KVM: arm64: nVHE: Use separate vector for the host Andrew Scull
2020-09-07 11:38 ` Marc Zyngier
2020-09-08 10:29 ` Andrew Scull
2020-09-03 13:52 ` [PATCH v3 07/18] KVM: arm64: nVHE: Don't consume host SErrors with ESB Andrew Scull
2020-09-07 11:46 ` Marc Zyngier
2020-09-03 13:52 ` [PATCH v3 08/18] KVM: arm64: Introduce hyp context Andrew Scull
2020-09-07 13:29 ` Marc Zyngier
2020-09-08 10:52 ` Andrew Scull
2020-09-03 13:52 ` [PATCH v3 09/18] KVM: arm64: Update context references from host to hyp Andrew Scull
2020-09-03 13:52 ` [PATCH v3 10/18] KVM: arm64: Restore hyp when panicking in guest context Andrew Scull
2020-09-03 13:53 ` [PATCH v3 11/18] KVM: arm64: Share context save and restore macros Andrew Scull
2020-09-03 13:53 ` [PATCH v3 12/18] KVM: arm64: nVHE: Switch to hyp context for EL2 Andrew Scull
2020-09-07 13:02 ` Marc Zyngier
2020-09-08 10:42 ` Andrew Scull
2020-09-03 13:53 ` [PATCH v3 13/18] KVM: arm64: nVHE: Handle hyp panics Andrew Scull
2020-09-07 13:24 ` Marc Zyngier
2020-09-03 13:53 ` [PATCH v3 14/18] smccc: Cast arguments to unsigned long Andrew Scull
2020-09-07 13:33 ` Marc Zyngier
2020-09-08 10:58 ` Andrew Scull
2020-09-03 13:53 ` [PATCH v3 15/18] KVM: arm64: nVHE: Pass pointers consistently to hyp-init Andrew Scull
2020-09-03 13:53 ` [PATCH v3 16/18] KVM: arm64: nVHE: Migrate hyp interface to SMCCC Andrew Scull
2020-09-07 13:47 ` Marc Zyngier
2020-09-07 14:20 ` Marc Zyngier
2020-09-08 11:02 ` Andrew Scull
2020-09-09 8:30 ` Andrew Scull
2020-09-03 13:53 ` [PATCH v3 17/18] KVM: arm64: nVHE: Migrate hyp-init " Andrew Scull
2020-09-03 13:53 ` [PATCH v3 18/18] KVM: arm64: nVHE: Fix pointers during SMCCC convertion Andrew Scull
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