Re: [PATCH v2 00/10] x86/module: rework ROX cache to avoid writable copy

[Peter Zijlstra]

On Tue, Jan 21, 2025 at 11:57:29AM +0200, Mike Rapoport wrote:

> Kirill A. Shutemov (1):
>   x86/mm/pat: restore large ROX pages after fragmentation

The duplication between pmd and pud collapse is a bit annoying, but so
be it.

> Mike Rapoport (Microsoft) (9):
>   x86/mm/pat: cpa-test: fix length for CPA_ARRAY test
>   x86/mm/pat: drop duplicate variable in cpa_flush()
>   execmem: don't remove ROX cache from the direct map
>   execmem: add API for temporal remapping as RW and restoring ROX afterwards
>   module: introduce MODULE_STATE_GONE
>   module: switch to execmem API for remapping as RW and restoring ROX
>   Revert "x86/module: prepare module loading for ROX allocations of text"
>   module: drop unused module_writable_address()
>   x86: re-enable EXECMEM_ROX support

All these look good on a first reading, let me go build and test the
various options.