linux/arch/x86/mm
Thomas Gleixner 8d4a430085 x86: cleanup PAT cpu validation
Move the scattered checks for PAT support to a single function. Its
moved to addon_cpuid_features.c as this file is shared between 32 and
64 bit.

Remove the manipulation of the PAT feature bit and just disable PAT in
the PAT layer, based on the PAT bit provided by the CPU and the
current CPU version/model white list.

Change the boot CPU check so it works on Voyager somewhere in the
future as well :) Also panic, when a secondary has PAT disabled but
the primary one has alrady switched to PAT. We have no way to undo
that.

The white list is kept for now to ensure that we can rely on known to
work CPU types and concentrate on the software induced problems
instead of fighthing CPU erratas and subtle wreckage caused by not yet
verified CPUs. Once the PAT code has stabilized enough, we can remove
the white list and open the can of worms.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-05-08 15:43:51 +02:00
..
discontig_32.c x86: undo visws/numaq build changes 2008-05-04 20:04:45 +02:00
dump_pagetables.c "make namespacecheck" fixes 2008-04-24 23:15:44 +02:00
extable.c
fault.c x86: cleanup - rename VM_MASK to X86_VM_MASK 2008-04-17 17:41:33 +02:00
highmem_32.c x86: unexport kmap_atomic_to_page 2008-04-30 23:15:34 +02:00
hugetlbpage.c x86: stricter check in follow_huge_addr() 2008-03-27 16:08:45 +01:00
init_32.c hotplug-memory: make online_page() common 2008-04-28 08:58:17 -07:00
init_64.c hotplug-memory: make online_page() common 2008-04-28 08:58:17 -07:00
ioremap.c x86: ioremap ram check fix 2008-04-30 23:15:35 +02:00
k8topology_64.c acpi: get boot_cpu_id as early for k8_scan_nodes 2008-04-26 23:41:04 +02:00
Makefile x86: add common mm/pgtable.c 2008-04-24 23:57:30 +02:00
mmap.c
numa_64.c x86_64: fix setup_node_bootmem to support big mem excluding with memmap 2008-04-26 22:51:08 +02:00
pageattr-test.c
pageattr.c x86 PAT: fix performance drop for glx, use UC minus for ioremap(), ioremap_nocache() and pci_mmap_page_range() 2008-04-30 23:15:35 +02:00
pat.c x86: cleanup PAT cpu validation 2008-05-08 15:43:51 +02:00
pgtable_32.c x86: fix PAE pmd_bad bootup warning 2008-05-06 13:08:58 -07:00
pgtable.c x86: unify pgd ctor/dtor 2008-04-24 23:57:31 +02:00
srat_64.c "make namespacecheck" fixes 2008-04-24 23:15:44 +02:00