[MULTIBOOT2 DOC PATCH 07/10] multiboot2: Say that memory maps may not be available on EFI platforms

[Daniel Kiper <daniel.kiper@oracle.com>]

Signed-off-by: Daniel Kiper <daniel.kiper@oracle.com>
---
 doc/multiboot.texi |   11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/doc/multiboot.texi b/doc/multiboot.texi
index f1e0e09..c81b2ea 100644
--- a/doc/multiboot.texi
+++ b/doc/multiboot.texi
@@ -927,6 +927,10 @@ possible value for lower memory is 640 kilobytes. The value returned for
 upper memory is maximally the address of the first upper memory hole
 minus 1 megabyte. It is not guaranteed to be this value.
 
+This tag may not be provided by some boot loaders on EFI platforms if EFI
+boot services are enabled and available for loaded image (EFI boot services
+not terminated tag exists in Multiboot information structure).
+
 @subsection BIOS Boot device
 @example
 @group
@@ -1078,6 +1082,10 @@ indicated a reserved area.
 The map provided is guaranteed to list all standard @sc{ram} that should
 be available for normal use. This type however includes the regions occupied by kernel, mbi, segments and modules. Kernel must take care not to overwrite these regions.
 
+This tag may not be provided by some boot loaders on EFI platforms if EFI
+boot services are enabled and available for loaded image (EFI boot services
+not terminated tag exists in Multiboot information structure).
+
 @subsection Boot loader name
 @example
 @group
@@ -1310,6 +1318,9 @@ u32     | descriptor version|
 
 This tag contains EFI memory map as per EFI specification.
 
+This tag may not be provided by some boot loaders on EFI platforms if EFI
+boot services are enabled and available for loaded image (EFI boot services
+not terminated tag exists in Multiboot information structure).
 
 @subsection EFI boot services not terminated
 @example
-- 
1.7.10.4


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