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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2017-07-03 13:40:38 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-07-03 13:40:38 -0700 |
| commit | 25e09ca52459586eb6171209635bc8b436a56d79 (patch) | |
| tree | 405d1a8387cf1df44c9e42f17d83b060d42a098f /Documentation/admin-guide | |
| parent | 48b5259cf0a2b86b978da122f9459e22a2d1e8f6 (diff) | |
| parent | fe2d48b805d01e14ddb8144de01de43171eb516f (diff) | |
Merge branch 'x86-boot-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 boot updates from Ingo Molnar:
"The main changes in this cycle were KASLR improvements for rare
environments with special boot options, by Baoquan He. Also misc
smaller changes/cleanups"
* 'x86-boot-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/debug: Extend the lower bound of crash kernel low reservations
x86/boot: Remove unused copy_*_gs() functions
x86/KASLR: Use the right memcpy() implementation
Documentation/kernel-parameters.txt: Update 'memmap=' boot option description
x86/KASLR: Handle the memory limit specified by the 'memmap=' and 'mem=' boot options
x86/KASLR: Parse all 'memmap=' boot option entries
Diffstat (limited to 'Documentation/admin-guide')
| -rw-r--r-- | Documentation/admin-guide/kernel-parameters.txt | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index f59aad5c2270..9b0b3dea6326 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -2136,6 +2136,12 @@ memmap=nn[KMG]@ss[KMG] [KNL] Force usage of a specific region of memory. Region of memory to be used is from ss to ss+nn. + If @ss[KMG] is omitted, it is equivalent to mem=nn[KMG], + which limits max address to nn[KMG]. + Multiple different regions can be specified, + comma delimited. + Example: + memmap=100M@2G,100M#3G,1G!1024G memmap=nn[KMG]#ss[KMG] [KNL,ACPI] Mark specific memory as ACPI data. @@ -2148,6 +2154,9 @@ memmap=64K$0x18690000 or memmap=0x10000$0x18690000 + Some bootloaders may need an escape character before '$', + like Grub2, otherwise '$' and the following number + will be eaten. memmap=nn[KMG]!ss[KMG] [KNL,X86] Mark specific memory as protected. |