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[SCM] GNU Mach branch, master, updated. v1.8-554-g6a46db9f

From: Samuel Thibault
Subject: [SCM] GNU Mach branch, master, updated. v1.8-554-g6a46db9f
Date: Sun, 12 Feb 2023 13:24:45 -0500 (EST)

This is an automated email from the git hooks/post-receive script. It was
generated because a ref change was pushed to the repository containing
the project "GNU Mach".

The branch, master has been updated
       via  6a46db9fe035c26ab549bc0b681469fc650141d6 (commit)
      from  eef53f7a1309e52012babc62da81a2ac750a7e9f (commit)

Those revisions listed above that are new to this repository have
not appeared on any other notification email; so we list those
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- Log -----------------------------------------------------------------
commit 6a46db9fe035c26ab549bc0b681469fc650141d6
Author: Luca Dariz <>
Date:   Sun Feb 12 18:28:18 2023 +0100

    move kernel virtual address space to upper addresses
    * i386/i386/vm_param.h: adjust constants to the new kernel map
      - the boothdr.S code already sets up a temporary map to higher
        addresses, so we can use INIT_VM_MIN_KERNEL_ADDRESS as in xen
      - increase the kernel map size to accomodate for bigger structures
        and more memory
      - adjust kernel max address and directmap limit
    * i386/i386at/biosmem.c: enable directmap check also on x86_64
    * i386/include/mach/i386/vm_param.h: increase user virtual memory
      limit as it's not conflicting with the kernel's anymore
    * i386/intel/pmap.h: adjust lin2pdenum_cont() and INTEL_PTE_PFN to the
      new kernel map
    * x86_64/ change KERNEL_MAP_BASE to be above 4G, and
      according to mcmodel=kernel. This will allow to use the full memory
      address space.
    Message-Id: <>


Summary of changes:
 i386/i386/vm_param.h              | 20 ++++++++++++++++----
 i386/i386at/biosmem.c             |  2 --
 i386/include/mach/i386/vm_param.h |  2 +-
 i386/intel/pmap.h                 | 12 ++++++++++--
 x86_64/                | 12 ++++++------
 5 files changed, 33 insertions(+), 15 deletions(-)

GNU Mach

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