[SCM] GNU Mach branch, master, updated. v1.8-642-g659c109b

[Samuel Thibault]

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The branch, master has been updated
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       via  222020cff440921e987dcd92e308dd775e5d543d (commit)
      from  95bf57a0625140e4b60f817150cb516bda65b446 (commit)

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- Log -----------------------------------------------------------------
commit 659c109b6285632058bf9ca81bf450371165bd63
Author: Samuel Thibault <samuel.thibault@ens-lyon.org>
Date:   Sun May 21 21:14:32 2023 +0200

    pmap: Simplify code
    
    Notably, ptes_per_vm_page is meaninful for the pte level anyway.

commit 222020cff440921e987dcd92e308dd775e5d543d
Author: Luca Dariz <luca@orpolo.org>
Date:   Sun May 21 10:57:56 2023 +0200

    pmap: dynamically allocate the whole user page tree map
    
    * i386/intel/pmap.c: switch to dynamic allocation of all the page tree
      map levels for the user-space address range, using a separate kmem
      cache for each level. This allows to extend the usable memory space
      on x86_64 to use more than one L3 page for user space. The kernel
      address map is left untouched for now as it needs a different
      initialization.
    * i386/intel/pmap.h: remove hardcoded user pages and add macro to
      recontruct the page-to-virtual mapping
    Message-Id: <20230521085758.365640-1-luca@orpolo.org>

-----------------------------------------------------------------------

Summary of changes:
 i386/intel/pmap.c | 546 +++++++++++++++++++++++++-----------------------------
 i386/intel/pmap.h |  21 ++-
 2 files changed, 276 insertions(+), 291 deletions(-)


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