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    Subject[PATCH v6 0/6] Allocate module text and data separately
    Date
    This series applies on top of my series "miscellanuous cleanups" v4.


    This series allow architectures to request having modules data in
    vmalloc area instead of module area.

    This is required on powerpc book3s/32 in order to set data non
    executable, because it is not possible to set executability on page
    basis, this is done per 256 Mbytes segments. The module area has exec
    right, vmalloc area has noexec. Without this change module data
    remains executable regardless of CONFIG_STRICT_MODULES_RWX.

    This can also be useful on other powerpc/32 in order to maximize the
    chance of code being close enough to kernel core to avoid branch
    trampolines.

    Changes in v6:
    - Rebased on top of my series "miscellanuous cleanups" v4

    Changes in v5:
    - Rebased on top of Aaron's series "module: core code clean up" v8

    Changes in v4:
    - Rebased on top of Aaron's series "module: core code clean up" v6

    Changes in v3:
    - Fixed the tree for data_layout at one place (Thanks Miroslav)
    - Moved removal of module_addr_min/module_addr_max macro out of patch 1 in a new patch at the end of the series to reduce churn.

    Changes in v2:
    - Dropped first two patches which are not necessary. They may be added back later as a follow-up series.
    - Fixed the printks in GDB

    Christophe Leroy (6):
    module: Always have struct mod_tree_root
    module: Prepare for handling several RB trees
    module: Introduce data_layout
    module: Add CONFIG_ARCH_WANTS_MODULES_DATA_IN_VMALLOC
    module: Remove module_addr_min and module_addr_max
    powerpc: Select ARCH_WANTS_MODULES_DATA_IN_VMALLOC on book3s/32 and
    8xx

    arch/Kconfig | 6 +++
    arch/powerpc/Kconfig | 1 +
    include/linux/module.h | 8 +++
    kernel/debug/kdb/kdb_main.c | 10 +++-
    kernel/module/internal.h | 13 +++--
    kernel/module/kallsyms.c | 18 +++----
    kernel/module/main.c | 103 +++++++++++++++++++++++++++---------
    kernel/module/procfs.c | 8 ++-
    kernel/module/strict_rwx.c | 11 ++--
    kernel/module/tree_lookup.c | 28 ++++++----
    10 files changed, 150 insertions(+), 56 deletions(-)

    --
    2.34.1

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