Merge tag 'master-2014-08-25' of git://git.kernel.org/pub/scm/linux/kernel/git/linvil...

[karo-tx-linux.git] / Documentation / kernel-parameters.txt

diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index a8eb6afce6a412a80ce576911bc17b20294891d6..5ae8608ca9f58a6331cae454ae7a0c84ab2f6c47 100644 (file)
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -2200,6 +2200,21 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
                        and restore using xsave. The kernel will fallback to
                        enabling legacy floating-point and sse state.
 
+       noxsaveopt      [X86] Disables xsaveopt used in saving x86 extended
+                       register states. The kernel will fall back to use
+                       xsave to save the states. By using this parameter,
+                       performance of saving the states is degraded because
+                       xsave doesn't support modified optimization while
+                       xsaveopt supports it on xsaveopt enabled systems.
+
+       noxsaves        [X86] Disables xsaves and xrstors used in saving and
+                       restoring x86 extended register state in compacted
+                       form of xsave area. The kernel will fall back to use
+                       xsaveopt and xrstor to save and restore the states
+                       in standard form of xsave area. By using this
+                       parameter, xsave area per process might occupy more
+                       memory on xsaves enabled systems.
+
        eagerfpu=       [X86]
                        on      enable eager fpu restore
                        off     disable eager fpu restore