diff options
| author | Will Deacon <will@kernel.org> | 2021-10-08 14:58:38 +0100 |
|---|---|---|
| committer | Marc Zyngier <maz@kernel.org> | 2021-10-11 09:07:29 +0100 |
| commit | 07036cffe17ec07e8fb630d86f8ea21832d9e57d (patch) | |
| tree | 52041c29e0e97601bae479d68c19dc2783ae30cc /arch/arm64/kvm/hyp/nvhe/hyp-main.c | |
| parent | 2f2e1a5069679491d18cf9021da19b40c56a17f3 (diff) | |
KVM: arm64: Prevent re-finalisation of pKVM for a given CPU
__pkvm_prot_finalize() completes the deprivilege of the host when pKVM
is in use by installing a stage-2 translation table for the calling CPU.
Issuing the hypercall multiple times for a given CPU makes little sense,
but in such a case just return early with -EPERM rather than go through
the whole page-table dance again.
Cc: Marc Zyngier <maz@kernel.org>
Cc: Quentin Perret <qperret@google.com>
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20211008135839.1193-6-will@kernel.org
Diffstat (limited to 'arch/arm64/kvm/hyp/nvhe/hyp-main.c')
0 files changed, 0 insertions, 0 deletions