On Tue, Jan 21, 2025 at 01:36:47PM +0100, Peter Zijlstra wrote:

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

quoted

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.

quoted

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.

I've tested:

GCC:  ibt=off
      ibt=on
LLVM: ibt-off,cfi=off
      ibt=off,cfi=kcfi
      ibt=on,cfi=off
      ibt=on,cfi=kcfi
      ibt=on,cfi=fineibt

And all of them were able to load a module, so yay!

My plan is to merge these patches into tip/x86/mm once we have -rc1.