| Date | Wed, 17 Mar 2021 14:17:12 +0000 | Subject | [PATCH 0/2] Fixes for FWB | From | Quentin Perret <> |
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Hi folks,
This is an alternative solution to the KVM_PGTABLE_PROT_S2_NOFWB patch I shared earlier (and which is a bit of a hack).
With this series we basically force FWB off for the host stage-2, even when the CPUs support it. This is done by passing flags to the pgtable init function, and propagating it down where needed. It's a bit more intrusive, but cleaner conceptually.
Thoughts?
Thanks, Quentin
Quentin Perret (2): KVM: arm64: Introduce KVM_PGTABLE_S2_NOFWB Stage-2 flag KVM: arm64: Disable FWB in host stage-2
arch/arm64/include/asm/kvm_pgtable.h | 19 +++++++++-- arch/arm64/include/asm/pgtable-prot.h | 4 +-- arch/arm64/kvm/hyp/nvhe/mem_protect.c | 6 ++-- arch/arm64/kvm/hyp/pgtable.c | 49 +++++++++++++++++---------- 4 files changed, 52 insertions(+), 26 deletions(-)
-- 2.31.0.rc2.261.g7f71774620-goog
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