On 9/16/23 02:39, Sean Christopherson wrote:
Use the "inner" TDP MMU root walker when zapping SPTEs in response to an mmu_notifier invalidation instead of invoking kvm_tdp_mmu_zap_leafs(). This will allow reworking for_each_tdp_mmu_root_yield_safe() to do more work, and to also make it usable in more places, without increasing the number of params to the point where it adds no value. The mmu_notifier path is a bit of a special snowflake, e.g. it zaps only a single address space (because it's per-slot), and can't always yield. Drop the @can_yield param from tdp_mmu_zap_leafs() as its sole remaining caller unconditionally passes "true".
Slightly rewritten commit log: --- The mmu_notifier path is a bit of a special snowflake, e.g. it zaps only a single address space (because it's per-slot), and can't always yield. Because of this, it calls kvm_tdp_mmu_zap_leafs() in ways that no one else does. Iterate manually over the leafs in response to an mmu_notifier invalidation, instead of invoking kvm_tdp_mmu_zap_leafs(). Drop the @can_yield param from kvm_tdp_mmu_zap_leafs() as its sole remaining caller unconditionally passes "true". --- and using the "__" macro can be moved to the second patch. Paolo
