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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2013-05-09 23:34:58 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-05-09 23:34:58 +0200 |
| commit | b32729b1eeae7ef8f5709923b36b5a0906d213df (patch) | |
| tree | 20bb9092d2c67569ea4efd95c0df5b8160b8b1a3 /arch/tile/Kconfig | |
| parent | shm: fix null pointer deref when userspace specifies invalid hugepage size (diff) | |
| parent | usb: tilegx: fix memleak when create hcd fail (diff) | |
| download | linux-b32729b1eeae7ef8f5709923b36b5a0906d213df.tar.xz linux-b32729b1eeae7ef8f5709923b36b5a0906d213df.zip | |
Merge branch 'stable' of git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile
Pull tile update from Chris Metcalf:
"The interesting bug fix is support for the upcoming "4.2" release of
the Tilera hypervisor, which by default launches Linux at privilege
level 2 instead of 1. The fix lets new and old hypervisors and
Linuxes interoperate more smoothly, so I've tagged it for
stable@kernel.org so that older Linuxes will be able to boot under the
newer hypervisor."
* 'stable' of git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile:
usb: tilegx: fix memleak when create hcd fail
arch/tile: remove inline marking of EXPORT_SYMBOL functions
rtc: rtc-tile: add missing platform_device_unregister() when module exit
tile: support new Tilera hypervisor
Diffstat (limited to 'arch/tile/Kconfig')
| -rw-r--r-- | arch/tile/Kconfig | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/arch/tile/Kconfig b/arch/tile/Kconfig index 5b6a40dd5556..3aa37669ff8c 100644 --- a/arch/tile/Kconfig +++ b/arch/tile/Kconfig @@ -355,11 +355,17 @@ config HARDWALL config KERNEL_PL int "Processor protection level for kernel" range 1 2 - default "1" + default 2 if TILEGX + default 1 if !TILEGX ---help--- - This setting determines the processor protection level the - kernel will be built to run at. Generally you should use - the default value here. + Since MDE 4.2, the Tilera hypervisor runs the kernel + at PL2 by default. If running under an older hypervisor, + or as a KVM guest, you must run at PL1. (The current + hypervisor may also be recompiled with "make HV_PL=2" to + allow it to run a kernel at PL1, but clients running at PL1 + are not expected to be supported indefinitely.) + + If you're not sure, don't change the default. source "arch/tile/gxio/Kconfig" |