linux/arch/x86/mm
Jeremy Fitzhardinge 22b45144f6 x86/paravirt: groundwork for 64-bit Xen support, fix #2
Ingo Molnar wrote:
> that fixed the build but now we've got a boot crash with this config:
>
>  time.c: Detected 2010.304 MHz processor.
>  spurious 8259A interrupt: IRQ7.
>  BUG: unable to handle kernel NULL pointer dereference at  0000000000000000
>  IP: [<0000000000000000>]
>  PGD 0
>  Thread overran stack, or stack corrupted
>  Oops: 0010 [1] SMP
>  CPU 0
>

I don't know if this will fix this bug, but it's definitely a bugfix.
It was trashing random pages by overwriting them with pagetables...

Don't trash a large pmd's data when mapping physical memory.
This is a bugfix for "x86_64: adjust mapping of physical pagetables
to work with Xen".

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Cc: xen-devel <xen-devel@lists.xensource.com>
Cc: Stephen Tweedie <sct@redhat.com>
Cc: Eduardo Habkost <ehabkost@redhat.com>
Cc: Mark McLoughlin <markmc@redhat.com>
Cc: Vegard Nossum <vegard.nossum@gmail.com>
Cc: Nick Piggin <npiggin@suse.de>
Cc: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08 13:16:02 +02:00
..
discontig_32.c x86: introduce init_memory_mapping for 32bit #3 2008-07-08 13:10:33 +02:00
dump_pagetables.c x86_64: use PAGE_OFFSET in dump_pagetables 2008-07-08 08:12:06 +02:00
extable.c x86: unify extable_{32|64}.c 2008-01-30 13:31:41 +01:00
fault.c x86: simplify vmalloc_sync_all 2008-07-08 13:10:59 +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 x86: move fix mapping page table range early 2008-07-08 13:16:01 +02:00
init_64.c x86/paravirt: groundwork for 64-bit Xen support, fix #2 2008-07-08 13:16:02 +02:00
ioremap.c x86, 64-bit: adjust mapping of physical pagetables to work with Xen 2008-07-08 13:11:07 +02:00
k8topology_64.c x86: remove end_pfn in 64bit 2008-07-08 13:10:38 +02:00
Makefile x86: add common mm/pgtable.c 2008-04-24 23:57:30 +02:00
mmap.c x86: unify mmap_{32|64}.c 2008-01-30 13:31:10 +01:00
numa_64.c x86: remove end_pfn in 64bit 2008-07-08 13:10:38 +02:00
pageattr-test.c x86: remove over noisy debug printk 2008-02-11 11:24:24 -08:00
pageattr.c Merge branches 'x86/numa-fixes', 'x86/apic', 'x86/apm', 'x86/bitops', 'x86/build', 'x86/cleanups', 'x86/cpa', 'x86/cpu', 'x86/defconfig', 'x86/gart', 'x86/i8259', 'x86/intel', 'x86/irqstats', 'x86/kconfig', 'x86/ldt', 'x86/mce', 'x86/memtest', 'x86/pat', 'x86/ptemask', 'x86/resumetrace', 'x86/threadinfo', 'x86/timers', 'x86/vdso' and 'x86/xen' into x86/devel 2008-07-08 09:16:56 +02:00
pat.c x86: pat.c final cleanup of loop body in reserve_memtype 2008-06-24 13:05:59 +02:00
pgtable_32.c x86: move reservetop and vmalloc parsing to pgtable_32.c 2008-07-08 12:50:19 +02:00
pgtable.c x86: preallocate and prepopulate separately 2008-07-08 13:11:02 +02:00
srat_64.c x86: remove end_pfn in 64bit 2008-07-08 13:10:38 +02:00