doc, kernel-parameters: Document 'console=hvc<n>'

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

diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index a0c5c5f..ddbf18e 100644 (file)
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -315,12 +315,12 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
                        CPU-intensive style benchmark, and it can vary highly in
                        a microbenchmark depending on workload and compiler.
 
-                       1: only for 32-bit processes
-                       2: only for 64-bit processes
+                       32: only for 32-bit processes
+                       64: only for 64-bit processes
                        on: enable for both 32- and 64-bit processes
                        off: disable for both 32- and 64-bit processes
 
-       amd_iommu=      [HW,X86-84]
+       amd_iommu=      [HW,X86-64]
                        Pass parameters to the AMD IOMMU driver in the system.
                        Possible values are:
                        fullflush - enable flushing of IO/TLB entries when
@@ -552,6 +552,8 @@ 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.
+               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
@@ -703,6 +705,7 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
 
        earlyprintk=    [X86,SH,BLACKFIN]
                        earlyprintk=vga
+                       earlyprintk=xen
                        earlyprintk=serial[,ttySn[,baudrate]]
                        earlyprintk=ttySn[,baudrate]
                        earlyprintk=dbgp[debugController#]
@@ -720,6 +723,8 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
                        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