Messages in this thread Patch in this message |  | | Date | Wed, 8 Dec 2021 17:50:51 +0000 | From | Will Deacon <> | Subject | Re: [PATCH 6/6] KVM: arm64: pkvm: Make kvm_host_owns_hyp_mappings() robust to VHE |
| |
On Wed, Dec 08, 2021 at 03:22:59PM +0000, Quentin Perret wrote: > The kvm_host_owns_hyp_mappings() function should return true if and only > if the host kernel is responsible for creating the hypervisor stage-1 > mappings. That is only possible in standard non-VHE mode, or during boot > in protected nVHE mode. But either way, non of this makes sense in VHE,
Typo: non => none
> so make sure to catch this case as well, hence making the function > return sensible values in any context (VHE or not). > > Suggested-by: Marc Zyngier <maz@kernel.org> > Signed-off-by: Quentin Perret <qperret@google.com> > --- > arch/arm64/kvm/mmu.c | 3 +++ > 1 file changed, 3 insertions(+) > > diff --git a/arch/arm64/kvm/mmu.c b/arch/arm64/kvm/mmu.c > index 605c104eb030..ea840fa223b5 100644 > --- a/arch/arm64/kvm/mmu.c > +++ b/arch/arm64/kvm/mmu.c > @@ -239,6 +239,9 @@ void free_hyp_pgds(void) > > static bool kvm_host_owns_hyp_mappings(void) > { > + if (is_kernel_in_hyp_mode()) > + return false;
Acked-by: Will Deacon <will@kernel.org>
Will
|  |