On Wed, Dec 08, 2021 at 03:22:58PM +0000, Quentin Perret wrote: > Now that GICv2 is disabled in nVHE protected mode there should be no > other reason for the host to use create_hyp_io_mappings() or > kvm_phys_addr_ioremap(). Add sanity checks to make sure that assumption > remains true looking forward. > > Signed-off-by: Quentin Perret <[email protected]> > --- > arch/arm64/kvm/mmu.c | 6 ++++++ > 1 file changed, 6 insertions(+) > > diff --git a/arch/arm64/kvm/mmu.c b/arch/arm64/kvm/mmu.c > index 326cdfec74a1..605c104eb030 100644 > --- a/arch/arm64/kvm/mmu.c > +++ b/arch/arm64/kvm/mmu.c > @@ -407,6 +407,9 @@ int create_hyp_io_mappings(phys_addr_t phys_addr, size_t > size, > unsigned long addr; > int ret; > > + if (is_protected_kvm_enabled()) > + return -EPERM;
Looks like the vGIC is the only caller, so no need to worry about anybody relying on *kaddr being zeroed on failure. Acked-by: Will Deacon <[email protected]> Will _______________________________________________ kvmarm mailing list [email protected] https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
