---------------------------
-What: Deprecated snapshot ioctls
-When: 2.6.36
-
-Why: The ioctls in kernel/power/user.c were marked as deprecated long time
- ago. Now they notify users about that so that they need to replace
- their userspace. After some more time, remove them completely.
-
-Who: Jiri Slaby <jirislaby@gmail.com>
-
----------------------------
-
What: The ieee80211_regdom module parameter
When: March 2010 / desktop catchup
What: Code that is now under CONFIG_WIRELESS_EXT_SYSFS
(in net/core/net-sysfs.c)
-When: After the only user (hal) has seen a release with the patches
- for enough time, probably some time in 2010.
+When: 3.5
Why: Over 1K .text/.data size reduction, data is available in other
ways (ioctls)
Who: Johannes Berg <johannes@sipsolutions.net>
----------------------------
- What: KVM paravirt mmu host support
- When: January 2011
- Why: The paravirt mmu host support is slower than non-paravirt mmu, both
- on newer and older hardware. It is already not exposed to the guest,
- and kept only for live migration purposes.
- Who: Avi Kivity <avi@redhat.com>
-
- ----------------------------
-
What: iwlwifi 50XX module parameters
When: 3.0
Why: The "..50" modules parameters were used to configure 5000 series and
information log when acer-wmi initial.
Who: Lee, Chun-Yi <jlee@novell.com>
+---------------------------
+
+What: /sys/devices/platform/_UDC_/udc/_UDC_/is_dualspeed file and
+ is_dualspeed line in /sys/devices/platform/ci13xxx_*/udc/device file.
+When: 3.8
+Why: The is_dualspeed file is superseded by maximum_speed in the same
+ directory and is_dualspeed line in device file is superseded by
+ max_speed line in the same file.
+
+ The maximum_speed/max_speed specifies maximum speed supported by UDC.
+ To check if dualspeeed is supported, check if the value is >= 3.
+ Various possible speeds are defined in <linux/usb/ch9.h>.
+Who: Michal Nazarewicz <mina86@mina86.com>
+
----------------------------
What: The XFS nodelaylog mount option
kvm.ignore_msrs=[KVM] Ignore guest accesses to unhandled MSRs.
Default is 0 (don't ignore, but inject #GP)
- kvm.oos_shadow= [KVM] Disable out-of-sync shadow paging.
- Default is 1 (enabled)
-
kvm.mmu_audit= [KVM] This is a R/W parameter which allows audit
KVM MMU at runtime.
Default is 0 (off)
timer: [X86] Force use of architectural NMI
timer mode (see also oprofile.timer
for generic hr timer mode)
+ [s390] Force legacy basic mode sampling
+ (report cpu_type "timer")
oops=panic Always panic on oopses. Default is to just kill the
process, but there is a small probability of
[USB] Start with the old device initialization
scheme (default 0 = off).
+ usbcore.usbfs_memory_mb=
+ [USB] Memory limit (in MB) for buffers allocated by
+ usbfs (default = 16, 0 = max = 2047).
+
usbcore.use_both_schemes=
[USB] Try the other device initialization scheme
if the first one fails (default 1 = enabled).
functions are at fixed addresses, they make nice
targets for exploits that can control RIP.
- emulate Vsyscalls turn into traps and are emulated
- reasonably safely.
+ emulate [default] Vsyscalls turn into traps and are
+ emulated reasonably safely.
- native [default] Vsyscalls are native syscall
- instructions.
+ native Vsyscalls are native syscall instructions.
This is a little bit faster than trapping
and makes a few dynamic recompilers work
better than they would in emulation mode.