s390/qeth: free netdevice when removing a card

[pandora-kernel.git] / Documentation / kernel-parameters.txt

diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 356bf4b..ff397db 100644 (file)
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -1753,6 +1753,11 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
                        register save and restore. The kernel will only save
                        legacy floating-point registers on task switch.
 
+       nospectre_v2    [X86] Disable all mitigations for the Spectre variant 2
+                       (indirect branch prediction) vulnerability. System may
+                       allow data leaks with this option, which is equivalent
+                       to spectre_v2=off.
+
        noxsave         [BUGS=X86] Disables x86 extended register state save
                        and restore using xsave. The kernel will fallback to
                        enabling legacy floating-point and sse state.
@@ -1799,6 +1804,8 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
 
        nointroute      [IA-64]
 
+       noinvpcid       [X86] Disable the INVPCID cpu feature.
+
        nojitter        [IA-64] Disables jitter checking for ITC timers.
 
        no-kvmclock     [X86,KVM] Disable paravirtualized KVM clock driver
@@ -1827,11 +1834,11 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
        nopat           [X86] Disable PAT (page attribute table extension of
                        pagetables) support.
 
+       nopcid          [X86-64] Disable the PCID cpu feature.
+
        norandmaps      Don't use address space randomization.  Equivalent to
                        echo 0 > /proc/sys/kernel/randomize_va_space
 
-       noreplace-paravirt      [X86,IA-64,PV_OPS] Don't patch paravirt_ops
-
        noreplace-smp   [X86-32,SMP] Don't replace SMP instructions
                        with UP alternatives
 
@@ -2239,6 +2246,21 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
        pt.             [PARIDE]
                        See Documentation/blockdev/paride.txt.
 
+       pti=            [X86_64] Control Page Table Isolation of user and
+                       kernel address spaces.  Disabling this feature
+                       removes hardening, but improves performance of
+                       system calls and interrupts.
+
+                       on   - unconditionally enable
+                       off  - unconditionally disable
+                       auto - kernel detects whether your CPU model is
+                              vulnerable to issues that PTI mitigates
+
+                       Not specifying this option is equivalent to pti=auto.
+
+       nopti           [X86_64]
+                       Equivalent to pti=off
+
        pty.legacy_count=
                        [KNL] Number of legacy pty's. Overwrites compiled-in
                        default number.
@@ -2428,9 +2450,6 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
        smart2=         [HW]
                        Format: <io1>[,<io2>[,...,<io8>]]
 
-       smp-alt-once    [X86-32,SMP] On a hotplug CPU system, only
-                       attempt to substitute SMP alternatives once at boot.
-
        smsc-ircc2.nopnp        [HW] Don't use PNP to discover SMC devices
        smsc-ircc2.ircc_cfg=    [HW] Device configuration I/O port
        smsc-ircc2.ircc_sir=    [HW] SIR base I/O port
@@ -2452,6 +2471,29 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
        specialix=      [HW,SERIAL] Specialix multi-serial port adapter
                        See Documentation/serial/specialix.txt.
 
+       spectre_v2=     [X86] Control mitigation of Spectre variant 2
+                       (indirect branch speculation) vulnerability.
+
+                       on   - unconditionally enable
+                       off  - unconditionally disable
+                       auto - kernel detects whether your CPU model is
+                              vulnerable
+
+                       Selecting 'on' will, and 'auto' may, choose a
+                       mitigation method at run time according to the
+                       CPU, the available microcode, the setting of the
+                       CONFIG_RETPOLINE configuration option, and the
+                       compiler with which the kernel was built.
+
+                       Specific mitigations can also be selected manually:
+
+                       retpoline         - replace indirect branches
+                       retpoline,generic - google's original retpoline
+                       retpoline,amd     - AMD-specific minimal thunk
+
+                       Not specifying this option is equivalent to
+                       spectre_v2=auto.
+
        spia_io_base=   [HW,MTD]
        spia_fio_base=
        spia_pedr=