From: Will Deacon <will@kernel.org>
To: kvmarm@lists.cs.columbia.edu
Cc: catalin.marinas@arm.com, kernel-team@android.com,
Will Deacon <will@kernel.org>, Marc Zyngier <maz@kernel.org>
Subject: [PATCH v2 1/9] KVM: arm64: Remove redundant Spectre-v2 code from kvm_map_vector()
Date: Mon, 9 Nov 2020 21:47:18 +0000 [thread overview]
Message-ID: <20201109214726.15276-2-will@kernel.org> (raw)
In-Reply-To: <20201109214726.15276-1-will@kernel.org>
'__kvm_bp_vect_base' is only used when dealing with the hardened vectors
so remove the redundant assignments in kvm_map_vectors().
Cc: Marc Zyngier <maz@kernel.org>
Cc: Quentin Perret <qperret@google.com>
Signed-off-by: Will Deacon <will@kernel.org>
---
arch/arm64/kvm/arm.c | 5 -----
1 file changed, 5 deletions(-)
diff --git a/arch/arm64/kvm/arm.c b/arch/arm64/kvm/arm.c
index 5750ec34960e..b43b637ded14 100644
--- a/arch/arm64/kvm/arm.c
+++ b/arch/arm64/kvm/arm.c
@@ -1306,11 +1306,6 @@ static int kvm_map_vectors(void)
* !SV2 + HEL2 -> allocate one vector slot and use exec mapping
* SV2 + HEL2 -> use hardened vectors and use exec mapping
*/
- if (cpus_have_const_cap(ARM64_SPECTRE_V2)) {
- __kvm_bp_vect_base = kvm_ksym_ref(__bp_harden_hyp_vecs);
- __kvm_bp_vect_base = kern_hyp_va(__kvm_bp_vect_base);
- }
-
if (cpus_have_const_cap(ARM64_HARDEN_EL2_VECTORS)) {
phys_addr_t vect_pa = __pa_symbol(__bp_harden_hyp_vecs);
unsigned long size = __BP_HARDEN_HYP_VECS_SZ;
--
2.29.2.222.g5d2a92d10f8-goog
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next prev parent reply other threads:[~2020-11-09 21:47 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-09 21:47 [PATCH v2 0/9] Rework hyp vector handling Will Deacon
2020-11-09 21:47 ` Will Deacon [this message]
2020-11-09 21:47 ` [PATCH v2 2/9] KVM: arm64: Tidy up kvm_map_vector() Will Deacon
2020-11-09 21:47 ` [PATCH v2 3/9] KVM: arm64: Move kvm_get_hyp_vector() out of header file Will Deacon
2020-11-09 21:47 ` [PATCH v2 4/9] KVM: arm64: Make BP hardening globals static instead Will Deacon
2020-11-09 21:47 ` [PATCH v2 5/9] KVM: arm64: Move BP hardening helpers into spectre.h Will Deacon
2020-11-09 21:47 ` [PATCH v2 6/9] KVM: arm64: Re-jig logic when patching hardened hyp vectors Will Deacon
2020-11-09 21:47 ` [PATCH v2 7/9] KVM: arm64: Allocate hyp vectors statically Will Deacon
2020-11-12 11:07 ` Marc Zyngier
2020-11-12 11:27 ` Will Deacon
2020-11-12 12:05 ` Marc Zyngier
2020-11-12 12:24 ` Will Deacon
2020-11-09 21:47 ` [PATCH v2 8/9] arm64: spectre: Rename ARM64_HARDEN_EL2_VECTORS to ARM64_SPECTRE_V3A Will Deacon
2020-11-09 21:47 ` [PATCH v2 9/9] arm64: spectre: Consolidate spectre-v3a detection Will Deacon
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