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-rw-r--r--Documentation/intel_txt.txt2
1 files changed, 1 insertions, 1 deletions
diff --git a/Documentation/intel_txt.txt b/Documentation/intel_txt.txt
index 87c8990dbbd..5dc59b04a71 100644
--- a/Documentation/intel_txt.txt
+++ b/Documentation/intel_txt.txt
@@ -126,7 +126,7 @@ o Tboot then applies an (optional) user-defined launch policy to
126o Tboot adjusts the e820 table provided by the bootloader to reserve 126o Tboot adjusts the e820 table provided by the bootloader to reserve
127 its own location in memory as well as to reserve certain other 127 its own location in memory as well as to reserve certain other
128 TXT-related regions. 128 TXT-related regions.
129o As part of it's launch, tboot DMA protects all of RAM (using the 129o As part of its launch, tboot DMA protects all of RAM (using the
130 VT-d PMRs). Thus, the kernel must be booted with 'intel_iommu=on' 130 VT-d PMRs). Thus, the kernel must be booted with 'intel_iommu=on'
131 in order to remove this blanket protection and use VT-d's 131 in order to remove this blanket protection and use VT-d's
132 page-level protection. 132 page-level protection.