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[0/4] KVM: riscv: Fix Spectre-v1 vulnerabilities in register access

Message ID 20260226-kvm-riscv-spectre-v1-v1-0-5f930ea16691@cispa.de
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Series KVM: riscv: Fix Spectre-v1 vulnerabilities in register access | expand

Message

Lukas Gerlach Feb. 26, 2026, 2:18 p.m. UTC 
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@cispa.de>
---
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,