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Peter Chubb 6cf07a8cc8 [IA64] Fix nasty VMLPT problem... 
I've solved the problem I was having with the simulator and not
booting Debian.

The problem is that the number of bits for the virtual linear array
short-format VHPT (Virtually mapped linear page table, VMLPT for
short) is being tested incorrectly. 

There are two problems:
      1. The PAL call that should tell the kernel the size of the
      virtual address space isn't implemented for the simulator, so
      the kernel uses the default 50.  This is addressed separately
      in dc90e95f31

      2.  In arch/ia64/mm/init.c there's code to calcualte the size
      of the VMLPT based on the number of implemented virtual address
      bits and the page size.  It checks to see if the VMLPT base
      address overlaps the top of the mapped region, but this check
      doesn't allow for the address space hole, and in fact will
      never trigger.

Here's an alternative test and panic, that I think is more accurate.

Signed-off-by: Peter Chubb <peterc@gelato.unsw.edu.au>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-08-31 08:35:22 -07:00
..
configs [IA64] Updated tiger defconfig 2005-08-17 10:24:17 -07:00
dig Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
hp [IA64] Add PAL_VM_SUMMARY/PAL_MEM_ATTRIB to bootloader for SKI 2005-08-31 08:32:03 -07:00
ia32 [PATCH] compat: introduce compat_time_t 2005-06-23 09:45:32 -07:00
kernel [IA64] Allow /proc/pal/cpu0/vm_info under the simulator 2005-08-31 08:34:51 -07:00
lib [IA64] improve flush_icache_range() 2005-07-12 15:33:18 -07:00
mm [IA64] Fix nasty VMLPT problem... 2005-08-31 08:35:22 -07:00
oprofile Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
pci [PATCH] Export pcibios_bus_to_resource 2005-08-24 10:22:44 -07:00
scripts Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
sn Pull prarit-bus-sysdata into release branch 2005-08-23 07:27:28 -07:00
defconfig [PATCH] update all defconfigs for ARCH_DISCONTIGMEM_ENABLE 2005-06-23 09:45:02 -07:00
install.sh Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
Kconfig [IA64] update CONFIG_PCI description 2005-08-15 15:03:12 -07:00
Kconfig.debug [PATCH] Kprobes/IA64: arch specific handling 2005-06-23 09:45:22 -07:00
Makefile Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
module.lds Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00