[PATCH 0/4] KVM: riscv: Fix Spectre-v1 vulnerabilities in register access
From: Lukas Gerlach
Date: Thu Feb 26 2026 - 09:43:16 EST
This series adds array_index_nospec() to RISC-V KVM to prevent
speculative out-of-bounds access to kernel memory.
Similar fixes exist for x86 (ioapic, lapic, PMU) and arm64 (vgic).
Signed-off-by: Lukas Gerlach <lukas.gerlach@xxxxxxxx>
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Lukas Gerlach (4):
KVM: riscv: Fix Spectre-v1 in ONE_REG register access
KVM: riscv: Fix Spectre-v1 in AIA CSR access
KVM: riscv: Fix Spectre-v1 in floating-point register access
KVM: riscv: Fix Spectre-v1 in PMU counter access
arch/riscv/kvm/aia.c | 11 +++++++++--
arch/riscv/kvm/vcpu_fp.c | 17 +++++++++++++----
arch/riscv/kvm/vcpu_onereg.c | 36 ++++++++++++++++++++++++++++--------
arch/riscv/kvm/vcpu_pmu.c | 4 ++++
4 files changed, 54 insertions(+), 14 deletions(-)
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base-commit: f4d0ec0aa20d49f09dc01d82894ce80d72de0560
change-id: 20260226-kvm-riscv-spectre-v1-4d04dc68c226
Best regards,
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Lukas Gerlach <lukas.gerlach@xxxxxxxx>