2.6.22-rc3 - VMI does not compile unless himem enabled

[Mike Houston <mikeserv@bmts.com>]

While building kernels for vmware guests, I noticed that the
paravirt VMI driver in 2.6.22-rc3 does not compile when highmem
support is disabled. This did not occur in 2.6.21

  CC      arch/i386/kernel/vmi.o
arch/i386/kernel/vmi.c: In function `vmi_update_pte':
arch/i386/kernel/vmi.c:422: error: dereferencing pointer to
incomplete type
arch/i386/kernel/vmi.c:422: error: `init_mm' undeclared (first use in
this function)
arch/i386/kernel/vmi.c:422: error: (Each undeclared identifier is
reported only once
arch/i386/kernel/vmi.c:422: error: for each function it appears in.)
arch/i386/kernel/vmi.c: In function `vmi_update_pte_defer':
arch/i386/kernel/vmi.c:428: error: dereferencing pointer to
incomplete type
arch/i386/kernel/vmi.c:428: error: `init_mm' undeclared (first use in
this function)
arch/i386/kernel/vmi.c: In function `vmi_set_pte_at':
arch/i386/kernel/vmi.c:441: error: dereferencing pointer to
incomplete type
arch/i386/kernel/vmi.c:441: error: `init_mm' undeclared (first use in
this function)
make[1]: *** [arch/i386/kernel/vmi.o] Error 1
make: *** [arch/i386/kernel] Error 2

This does not occur if himem support is enabled.

Mike Houston
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