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    SubjectRe: exception tables in 2.5.55
    Hi All,

    Rusty Russell wrote:
    > You can now make kernel/extable.o depend on this configuration option
    > (whatever you decide it should be).
    >
    > And surround kernel/module.c's search_module_extables with the same
    > option.
    >
    > It's trivial, just CC: me when you send to Linus, and I'll re-xmit if
    > he drops it.

    Heres a patch for it. Pretty strait forward, if everyone is
    happy with this I will run with it...

    Tested and working on m68knommu architecture.

    Regards
    Greg




    diff -Naur linux-2.5.56/kernel/Makefile linux-2.5.56-uc0/kernel/Makefile
    --- linux-2.5.56/kernel/Makefile Sat Jan 11 06:11:36 2003
    +++ linux-2.5.56-uc0/kernel/Makefile Mon Jan 13 13:03:45 2003
    @@ -10,7 +10,7 @@
    exit.o itimer.o time.o softirq.o resource.o \
    sysctl.o capability.o ptrace.o timer.o user.o \
    signal.o sys.o kmod.o workqueue.o futex.o pid.o \
    - rcupdate.o intermodule.o extable.o params.o
    + rcupdate.o intermodule.o params.o

    obj-$(CONFIG_GENERIC_ISA_DMA) += dma.o
    obj-$(CONFIG_SMP) += cpu.o
    @@ -22,6 +22,7 @@
    obj-$(CONFIG_BSD_PROCESS_ACCT) += acct.o
    obj-$(CONFIG_SOFTWARE_SUSPEND) += suspend.o
    obj-$(CONFIG_COMPAT) += compat.o
    +obj-$(CONFIG_MMU) += extable.o

    ifneq ($(CONFIG_IA64),y)
    # According to Alan Modra <alan@linuxcare.com.au>, the
    -fno-omit-frame-pointer is
    diff -Naur linux-2.5.56/kernel/module.c linux-2.5.56-uc0/kernel/module.c
    --- linux-2.5.56/kernel/module.c Sat Jan 11 06:12:11 2003
    +++ linux-2.5.56-uc0/kernel/module.c Mon Jan 13 13:06:00 2003
    @@ -1438,6 +1438,7 @@
    .show = m_show
    };

    +#ifdef CONFIG_MMU
    /* Given an address, look for it in the module exception tables. */
    const struct exception_table_entry *search_module_extables(unsigned
    long addr)
    {
    @@ -1460,6 +1461,7 @@
    we cannot unload the module, hence no refcnt needed. */
    return e;
    }
    +#endif /* CONFIG_MMU */

    /* Is this a valid kernel address? We don't grab the lock: we are
    oopsing. */
    int module_text_address(unsigned long addr)

    ------------------------------------------------------------------------
    Greg Ungerer -- Chief Software Wizard EMAIL: gerg@snapgear.com
    SnapGear Pty Ltd PHONE: +61 7 3435 2888
    825 Stanley St, FAX: +61 7 3891 3630
    Woolloongabba, QLD, 4102, Australia WEB: www.SnapGear.com
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