Re: [PATCH v3 14/24] KVM: Change the return type of gfn_handler_t() from bool to int

[Sean Christopherson]

On Tue, Jan 06, 2026, Yan Zhao wrote:
> Modify the return type of gfn_handler_t() from bool to int. A negative
> return value indicates failure, while a return value of 1 signifies success
> with a flush required, and 0 denotes success without a flush required.
> 
> This adjustment prepares for a later change that will enable
> kvm_pre_set_memory_attributes() to fail.

No, just don't support S-EPT hugepages with per-VM memory attributes.  This type
of complexity isn't worth carrying for a feature we want to deprecate.