Boris Ostrovsky f4e342c877 x86/mm: Skip the hypervisor range when walking PGD ...

The range between 0xffff800000000000 and 0xffff87ffffffffff is reserved
for hypervisor and therefore we should not try to follow PGD's indexes
corresponding to those addresses.

While this has always been a problem, with the new W+X warning
mechanism ptdump_walk_pgd_level_core() can now be called during boot,
causing a PV Xen guest to crash.

[ tglx: Replaced the macro with a readable inline ]

Fixes: e1a58320a38d "x86/mm: Warn on W^X mappings"
Reported-by: Sander Eikelenboom <linux@eikelenboom.it>
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Cc: xen-devel@lists.xen.org
Link: http://lkml.kernel.org/r/1446749795-27764-1-git-send-email-boris.ostrovsky@oracle.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

2015-11-07 10:39:39 +01:00

..

alpha

Linux 4.3-rc6

2015-10-20 10:16:46 +02:00

arc

Merge branch 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2015-11-03 16:10:43 -08:00

arm

Merge branch 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2015-11-03 16:10:43 -08:00

arm64

Merge branch 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2015-11-03 16:10:43 -08:00

avr32

Merge branch 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2015-11-03 16:10:43 -08:00

blackfin

Merge branch 'strscpy' of git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile

2015-10-04 16:31:13 +01:00

c6x

irqdomain: Use irq_domain_get_of_node() instead of direct field access

2015-10-13 19:01:23 +02:00

cris

cris: Drop reference to get_cmos_time()

2015-11-02 20:03:05 +01:00

frv

Linux 4.3-rc4

2015-10-06 17:10:28 +02:00

h8300

Linux 4.3-rc6

2015-10-20 10:16:46 +02:00

hexagon

Linux 4.3-rc4

2015-10-06 17:10:28 +02:00

ia64

Merge branch 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2015-11-03 16:10:43 -08:00

m32r

Linux 4.3-rc4

2015-10-06 17:10:28 +02:00

m68k

Merge branch 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2015-11-03 16:10:43 -08:00

metag

Linux 4.3-rc4

2015-10-06 17:10:28 +02:00

microblaze

Merge branch 'strscpy' of git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile

2015-10-04 16:31:13 +01:00

mips

Merge branch 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2015-11-03 16:10:43 -08:00

mn10300

Linux 4.3-rc4

2015-10-06 17:10:28 +02:00

nios2

Merge branch 'strscpy' of git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile

2015-10-04 16:31:13 +01:00

openrisc

dma-mapping: consolidate dma_set_mask

2015-09-10 13:29:01 -07:00

parisc

atomic, arch: Audit atomic_{read,set}()

2015-09-23 09:54:28 +02:00

powerpc

Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2015-11-03 17:38:09 -08:00

s390

Merge branch 'perf/urgent' into perf/core, before pulling new changes

2015-10-08 10:52:18 +02:00

score

Merge branch 'strscpy' of git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile

2015-10-04 16:31:13 +01:00

sh

Linux 4.3-rc6

2015-10-20 10:16:46 +02:00

sparc

Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2015-11-03 17:38:09 -08:00

tile

Linux 4.3-rc6

2015-10-20 10:16:46 +02:00

um

um: Fix kernel mode fault condition

2015-10-19 22:53:37 +02:00

unicore32

Merge branch 'strscpy' of git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile

2015-10-04 16:31:13 +01:00

x86

x86/mm: Skip the hypervisor range when walking PGD

2015-11-07 10:39:39 +01:00

xtensa

Linux 4.3-rc4

2015-10-06 17:10:28 +02:00

.gitignore

…

Kconfig

kexec: split kexec_load syscall from kexec core code

2015-09-10 13:29:01 -07:00