From: Marc Zyngier <maz@kernel.org>
To: Paolo Bonzini <pbonzini@redhat.com>
Cc: kvm@vger.kernel.org, kernel-team@android.com,
kvmarm@lists.cs.columbia.edu,
linux-arm-kernel@lists.infradead.org,
Will Deacon <will@kernel.org>, Qais Yousef <qais.yousef@arm.com>
Subject: [PATCH 02/12] KVM: arm64: Remove leftover kern_hyp_va() in nVHE TLB invalidation
Date: Fri, 30 Oct 2020 16:40:07 +0000 [thread overview]
Message-ID: <20201030164017.244287-3-maz@kernel.org> (raw)
In-Reply-To: <20201030164017.244287-1-maz@kernel.org>
The new calling convention says that pointers coming from the SMCCC
interface are turned into their HYP version in the host HVC handler.
However, there is still a stray kern_hyp_va() in the TLB invalidation
code, which could result in a corrupted pointer.
Drop the spurious conversion.
Fixes: a071261d9318 ("KVM: arm64: nVHE: Fix pointers during SMCCC convertion")
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20201026095116.72051-3-maz@kernel.org
---
arch/arm64/kvm/hyp/nvhe/tlb.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/arch/arm64/kvm/hyp/nvhe/tlb.c b/arch/arm64/kvm/hyp/nvhe/tlb.c
index 544bca3072b7..ad212d8fa417 100644
--- a/arch/arm64/kvm/hyp/nvhe/tlb.c
+++ b/arch/arm64/kvm/hyp/nvhe/tlb.c
@@ -121,7 +121,6 @@ void __kvm_tlb_flush_local_vmid(struct kvm_s2_mmu *mmu)
struct tlb_inv_context cxt;
/* Switch to requested VMID */
- mmu = kern_hyp_va(mmu);
__tlb_switch_to_guest(mmu, &cxt);
__tlbi(vmalle1);
--
2.28.0
_______________________________________________
kvmarm mailing list
kvmarm@lists.cs.columbia.edu
https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
WARNING: multiple messages have this Message-ID (diff)
From: Marc Zyngier <maz@kernel.org>
To: Paolo Bonzini <pbonzini@redhat.com>
Cc: Mark Rutland <mark.rutland@arm.com>,
Santosh Shukla <sashukla@nvidia.com>,
Gavin Shan <gshan@redhat.com>,
kvm@vger.kernel.org, Quentin Perret <qperret@google.com>,
kernel-team@android.com,
Suzuki K Poulose <suzuki.poulose@arm.com>,
kvmarm@lists.cs.columbia.edu,
Vladimir Murzin <vladimir.murzin@arm.com>,
James Morse <james.morse@arm.com>,
linux-arm-kernel@lists.infradead.org,
David Brazdil <dbrazdil@google.com>,
Will Deacon <will@kernel.org>, Qais Yousef <qais.yousef@arm.com>,
Julien Thierry <julien.thierry.kdev@gmail.com>
Subject: [PATCH 02/12] KVM: arm64: Remove leftover kern_hyp_va() in nVHE TLB invalidation
Date: Fri, 30 Oct 2020 16:40:07 +0000 [thread overview]
Message-ID: <20201030164017.244287-3-maz@kernel.org> (raw)
In-Reply-To: <20201030164017.244287-1-maz@kernel.org>
The new calling convention says that pointers coming from the SMCCC
interface are turned into their HYP version in the host HVC handler.
However, there is still a stray kern_hyp_va() in the TLB invalidation
code, which could result in a corrupted pointer.
Drop the spurious conversion.
Fixes: a071261d9318 ("KVM: arm64: nVHE: Fix pointers during SMCCC convertion")
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20201026095116.72051-3-maz@kernel.org
---
arch/arm64/kvm/hyp/nvhe/tlb.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/arch/arm64/kvm/hyp/nvhe/tlb.c b/arch/arm64/kvm/hyp/nvhe/tlb.c
index 544bca3072b7..ad212d8fa417 100644
--- a/arch/arm64/kvm/hyp/nvhe/tlb.c
+++ b/arch/arm64/kvm/hyp/nvhe/tlb.c
@@ -121,7 +121,6 @@ void __kvm_tlb_flush_local_vmid(struct kvm_s2_mmu *mmu)
struct tlb_inv_context cxt;
/* Switch to requested VMID */
- mmu = kern_hyp_va(mmu);
__tlb_switch_to_guest(mmu, &cxt);
__tlbi(vmalle1);
--
2.28.0
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
WARNING: multiple messages have this Message-ID (diff)
From: Marc Zyngier <maz@kernel.org>
To: Paolo Bonzini <pbonzini@redhat.com>
Cc: David Brazdil <dbrazdil@google.com>,
Gavin Shan <gshan@redhat.com>, James Morse <james.morse@arm.com>,
Mark Rutland <mark.rutland@arm.com>,
Qais Yousef <qais.yousef@arm.com>,
Quentin Perret <qperret@google.com>,
Santosh Shukla <sashukla@nvidia.com>,
Vladimir Murzin <vladimir.murzin@arm.com>,
Will Deacon <will@kernel.org>,
Julien Thierry <julien.thierry.kdev@gmail.com>,
Suzuki K Poulose <suzuki.poulose@arm.com>,
kernel-team@android.com, kvmarm@lists.cs.columbia.edu,
kvm@vger.kernel.org, linux-arm-kernel@lists.infradead.org
Subject: [PATCH 02/12] KVM: arm64: Remove leftover kern_hyp_va() in nVHE TLB invalidation
Date: Fri, 30 Oct 2020 16:40:07 +0000 [thread overview]
Message-ID: <20201030164017.244287-3-maz@kernel.org> (raw)
In-Reply-To: <20201030164017.244287-1-maz@kernel.org>
The new calling convention says that pointers coming from the SMCCC
interface are turned into their HYP version in the host HVC handler.
However, there is still a stray kern_hyp_va() in the TLB invalidation
code, which could result in a corrupted pointer.
Drop the spurious conversion.
Fixes: a071261d9318 ("KVM: arm64: nVHE: Fix pointers during SMCCC convertion")
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20201026095116.72051-3-maz@kernel.org
---
arch/arm64/kvm/hyp/nvhe/tlb.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/arch/arm64/kvm/hyp/nvhe/tlb.c b/arch/arm64/kvm/hyp/nvhe/tlb.c
index 544bca3072b7..ad212d8fa417 100644
--- a/arch/arm64/kvm/hyp/nvhe/tlb.c
+++ b/arch/arm64/kvm/hyp/nvhe/tlb.c
@@ -121,7 +121,6 @@ void __kvm_tlb_flush_local_vmid(struct kvm_s2_mmu *mmu)
struct tlb_inv_context cxt;
/* Switch to requested VMID */
- mmu = kern_hyp_va(mmu);
__tlb_switch_to_guest(mmu, &cxt);
__tlbi(vmalle1);
--
2.28.0
next prev parent reply other threads:[~2020-10-30 16:40 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-30 16:40 [GIT PULL] KVM/arm64 fixes for 5.10, take #1 Marc Zyngier
2020-10-30 16:40 ` Marc Zyngier
2020-10-30 16:40 ` Marc Zyngier
2020-10-30 16:40 ` [PATCH 01/12] KVM: arm64: Don't corrupt tpidr_el2 on failed HVC call Marc Zyngier
2020-10-30 16:40 ` Marc Zyngier
2020-10-30 16:40 ` Marc Zyngier
2020-10-30 16:40 ` Marc Zyngier [this message]
2020-10-30 16:40 ` [PATCH 02/12] KVM: arm64: Remove leftover kern_hyp_va() in nVHE TLB invalidation Marc Zyngier
2020-10-30 16:40 ` Marc Zyngier
2020-10-30 16:40 ` [PATCH 03/12] KVM: arm64: Drop useless PAN setting on host EL1 to EL2 transition Marc Zyngier
2020-10-30 16:40 ` Marc Zyngier
2020-10-30 16:40 ` Marc Zyngier
2020-10-30 16:40 ` [PATCH 04/12] KVM: arm64: Allocate stage-2 pgd pages with GFP_KERNEL_ACCOUNT Marc Zyngier
2020-10-30 16:40 ` Marc Zyngier
2020-10-30 16:40 ` Marc Zyngier
2020-10-30 16:40 ` [PATCH 05/12] KVM: arm64: Fix AArch32 handling of DBGD{CCINT, SCRext} and DBGVCR Marc Zyngier
2020-10-30 16:40 ` [PATCH 05/12] KVM: arm64: Fix AArch32 handling of DBGD{CCINT,SCRext} " Marc Zyngier
2020-10-30 16:40 ` [PATCH 05/12] KVM: arm64: Fix AArch32 handling of DBGD{CCINT, SCRext} " Marc Zyngier
2020-10-30 16:40 ` [PATCH 06/12] KVM: arm64: Fix masks in stage2_pte_cacheable() Marc Zyngier
2020-10-30 16:40 ` Marc Zyngier
2020-10-30 16:40 ` Marc Zyngier
2020-10-30 16:40 ` [PATCH 07/12] KVM: arm64: Use fallback mapping sizes for contiguous huge page sizes Marc Zyngier
2020-10-30 16:40 ` Marc Zyngier
2020-10-30 16:40 ` Marc Zyngier
2020-10-30 16:40 ` [PATCH 08/12] KVM: arm64: Force PTE mapping on fault resulting in a device mapping Marc Zyngier
2020-10-30 16:40 ` Marc Zyngier
2020-10-30 16:40 ` Marc Zyngier
2020-10-30 16:40 ` [PATCH 09/12] KVM: arm64: Factor out is_{vhe,nvhe}_hyp_code() Marc Zyngier
2020-10-30 16:40 ` Marc Zyngier
2020-10-30 16:40 ` Marc Zyngier
2020-10-30 16:40 ` [PATCH 10/12] arm64: cpufeature: reorder cpus_have_{const, final}_cap() Marc Zyngier
2020-10-30 16:40 ` Marc Zyngier
2020-10-30 16:40 ` Marc Zyngier
2020-10-30 16:40 ` [PATCH 11/12] arm64: cpufeature: upgrade hyp caps to final Marc Zyngier
2020-10-30 16:40 ` Marc Zyngier
2020-10-30 16:40 ` Marc Zyngier
2020-10-30 16:40 ` [PATCH 12/12] KVM: arm64: Handle Asymmetric AArch32 systems Marc Zyngier
2020-10-30 16:40 ` Marc Zyngier
2020-10-30 16:40 ` Marc Zyngier
2020-10-31 14:35 ` [GIT PULL] KVM/arm64 fixes for 5.10, take #1 Paolo Bonzini
2020-10-31 14:35 ` Paolo Bonzini
2020-10-31 14:35 ` Paolo Bonzini
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