On 14/03/18 16:50, Marc Zyngier wrote:
Unmapping the idmap range using 52bit PA is quite broken, as we
don't take into account the right number of PGD entries, and rely
on PTRS_PER_PGD. The result is that pgd_index() truncates the
address, and we end-up in the weed.
Let's introduce a new unmap_hyp_idmap_range() that knows about this,
together with a kvm_pgd_index() helper, which hides a bit of the
complexity of the issue.
Fixes: 98732d1b189b ("KVM: arm/arm64: fix HYP ID map extension to 52 bits")
Reported-by: James Morse <james.morse@xxxxxxx>
Signed-off-by: Marc Zyngier <marc.zyngier@xxxxxxx>
---
Looks good to me, FWIW:
Reviewed-by: Suzuki K Poulose <suzuki.poulose@xxxxxxx>
