Documentation/kernel-parameters.txt: document libata's ignore_hpa option

By default the kernel honors the HPA (host protected area) of hard
drives.  Using libata's ignore_hpa module option it's possible to
change this behaviour.

Document usage and options of libata.ignore_hpa in
Documentation/kernel-parameters.txt.

Signed-off-by: Michael Prokop <mika@grml.org>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index dd1a6d4..7936b80 100644 (file)
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -1115,6 +1115,10 @@ and is between 256 and 4096 characters. It is defined in the file
                        libata.dma=4      Compact Flash DMA only 
                        Combinations also work, so libata.dma=3 enables DMA
                        for disks and CDROMs, but not CFs.
+       
+       libata.ignore_hpa=      [LIBATA] Ignore HPA limit
+                       libata.ignore_hpa=0       keep BIOS limits (default)
+                       libata.ignore_hpa=1       ignore limits, using full disk
 
        libata.noacpi   [LIBATA] Disables use of ACPI in libata suspend/resume
                        when set.