Merge branch 'stable-3.2' into pandora-3.2

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

diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 81c287f..74f6fdd 100644 (file)
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -503,6 +503,11 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
                        Also note the kernel might malfunction if you disable
                        some critical bits.
 
                        Also note the kernel might malfunction if you disable
                        some critical bits.
 

+       cma=nn[MG]      [ARM,KNL]
+                       Sets the size of kernel global memory area for contiguous
+                       memory allocations. For more information, see
+                       include/linux/dma-contiguous.h
+

        cmo_free_hint=  [PPC] Format: { yes | no }
                        Specify whether pages are marked as being inactive
                        when they are freed.  This is used in CMO environments
        cmo_free_hint=  [PPC] Format: { yes | no }
                        Specify whether pages are marked as being inactive
                        when they are freed.  This is used in CMO environments


@@ -510,6 +515,10 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
                        a hypervisor.
                        Default: yes
 
                        a hypervisor.
                        Default: yes
 

+       coherent_pool=nn[KMG]   [ARM,KNL]
+                       Sets the size of memory pool for coherent, atomic dma
+                       allocations if Contiguous Memory Allocator (CMA) is used.
+

        code_bytes      [X86] How many bytes of object code to print
                        in an oops report.
                        Range: 0 - 8192
        code_bytes      [X86] How many bytes of object code to print
                        in an oops report.
                        Range: 0 - 8192


@@ -552,6 +561,8 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
                        UART at the specified I/O port or MMIO address,
                        switching to the matching ttyS device later.  The
                        options are the same as for ttyS, above.
                        UART at the specified I/O port or MMIO address,
                        switching to the matching ttyS device later.  The
                        options are the same as for ttyS, above.

+               hvc<n>  Use the hypervisor console device <n>. This is for
+                       both Xen and PowerPC hypervisors.

 
                 If the device connected to the port is not a TTY but a braille
                 device, prepend "brl," before the device type, for instance
 
                 If the device connected to the port is not a TTY but a braille
                 device, prepend "brl," before the device type, for instance


@@ -623,6 +634,25 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
        no_debug_objects
                        [KNL] Disable object debugging
 
        no_debug_objects
                        [KNL] Disable object debugging
 

+       debug_guardpage_minorder=
+                       [KNL] When CONFIG_DEBUG_PAGEALLOC is set, this
+                       parameter allows control of the order of pages that will
+                       be intentionally kept free (and hence protected) by the
+                       buddy allocator. Bigger value increase the probability
+                       of catching random memory corruption, but reduce the
+                       amount of memory for normal system use. The maximum
+                       possible value is MAX_ORDER/2.  Setting this parameter
+                       to 1 or 2 should be enough to identify most random
+                       memory corruption problems caused by bugs in kernel or
+                       driver code when a CPU writes to (or reads from) a
+                       random memory location. Note that there exists a class
+                       of memory corruptions problems caused by buggy H/W or
+                       F/W or by drivers badly programing DMA (basically when
+                       memory is written at bus level and the CPU MMU is
+                       bypassed) which are not detectable by
+                       CONFIG_DEBUG_PAGEALLOC, hence this option will not help
+                       tracking down these problems.
+

        debugpat        [X86] Enable PAT debugging
 
        decnet.addr=    [HW,NET]
        debugpat        [X86] Enable PAT debugging
 
        decnet.addr=    [HW,NET]


@@ -703,6 +733,7 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
 
        earlyprintk=    [X86,SH,BLACKFIN]
                        earlyprintk=vga
 
        earlyprintk=    [X86,SH,BLACKFIN]
                        earlyprintk=vga

+                       earlyprintk=xen

                        earlyprintk=serial[,ttySn[,baudrate]]
                        earlyprintk=ttySn[,baudrate]
                        earlyprintk=dbgp[debugController#]
                        earlyprintk=serial[,ttySn[,baudrate]]
                        earlyprintk=ttySn[,baudrate]
                        earlyprintk=dbgp[debugController#]


@@ -720,6 +751,8 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
                        The VGA output is eventually overwritten by the real
                        console.
 
                        The VGA output is eventually overwritten by the real
                        console.
 

+                       The xen output can only be used by Xen PV guests.
+

        ekgdboc=        [X86,KGDB] Allow early kernel console debugging
                        ekgdboc=kbd
 
        ekgdboc=        [X86,KGDB] Allow early kernel console debugging
                        ekgdboc=kbd
 


@@ -943,6 +976,20 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
        i8k.restricted  [HW] Allow controlling fans only if SYS_ADMIN
                        capability is set.
 
        i8k.restricted  [HW] Allow controlling fans only if SYS_ADMIN
                        capability is set.
 

+       i915.invert_brightness=
+                       [DRM] Invert the sense of the variable that is used to
+                       set the brightness of the panel backlight. Normally a
+                       brightness value of 0 indicates backlight switched off,
+                       and the maximum of the brightness value sets the backlight
+                       to maximum brightness. If this parameter is set to 0
+                       (default) and the machine requires it, or this parameter
+                       is set to 1, a brightness value of 0 sets the backlight
+                       to maximum brightness, and the maximum of the brightness
+                       value switches the backlight off.
+                       -1 -- never invert brightness
+                        0 -- machine default
+                        1 -- force brightness inversion
+

        icn=            [HW,ISDN]
                        Format: <io>[,<membase>[,<icn_id>[,<icn_id2>]]]
 
        icn=            [HW,ISDN]
                        Format: <io>[,<membase>[,<icn_id>[,<icn_id2>]]]