x86/mm: Add support for the non-standard protected e820 type

[deliverable/linux.git] / Documentation / kernel-parameters.txt

diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index bfcb1a62a7b48466f3cbe5a08d3e1a632eadc3d2..c87122dd790fcd0621d16b91c5a0ab1747438bcf 100644 (file)
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -1965,6 +1965,12 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
                                 or
                                 memmap=0x10000$0x18690000
 
+       memmap=nn[KMG]!ss[KMG]
+                       [KNL,X86] Mark specific memory as protected.
+                       Region of memory to be used, from ss to ss+nn.
+                       The memory region may be marked as e820 type 12 (0xc)
+                       and is NVDIMM or ADR memory.
+
        memory_corruption_check=0/1 [X86]
                        Some BIOSes seem to corrupt the first 64k of
                        memory when doing things like suspend/resume.