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| author | Oliver Upton <oupton@google.com> | 2022-03-22 19:35:37 +0100 |
|---|---|---|
| committer | Marc Zyngier <maz@kernel.org> | 2022-04-06 11:39:39 +0200 |
| commit | 827c2ab3314814e1c7d873372c0fe0cad50ba1c5 (patch) | |
| tree | ababe6af1072773cc5fec01343a0c61bae836018 /crypto | |
| parent | KVM: arm64: Generally disallow SMC64 for AArch32 guests (diff) | |
| download | linux-827c2ab3314814e1c7d873372c0fe0cad50ba1c5.tar.xz linux-827c2ab3314814e1c7d873372c0fe0cad50ba1c5.zip | |
KVM: arm64: Actually prevent SMC64 SYSTEM_RESET2 from AArch32
The SMCCC does not allow the SMC64 calling convention to be used from
AArch32. While KVM checks to see if the calling convention is allowed in
PSCI_1_0_FN_PSCI_FEATURES, it does not actually prevent calls to
unadvertised PSCI v1.0+ functions.
Hoist the check to see if the requested function is allowed into
kvm_psci_call(), thereby preventing SMC64 calls from AArch32 for all
PSCI versions.
Fixes: d43583b890e7 ("KVM: arm64: Expose PSCI SYSTEM_RESET2 call to the guest")
Acked-by: Will Deacon <will@kernel.org>
Reviewed-by: Reiji Watanabe <reijiw@google.com>
Signed-off-by: Oliver Upton <oupton@google.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20220322183538.2757758-3-oupton@google.com
Diffstat (limited to 'crypto')
0 files changed, 0 insertions, 0 deletions