[MULTIBOOT2,DOC,v3,10/13] multiboot2: Say that memory maps may not be available on EFI platforms
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Message ID 1481064781-16949-11-git-send-email-daniel.kiper@oracle.com
State New, archived
Headers show

Commit Message

Daniel Kiper Dec. 6, 2016, 10:52 p.m. UTC
Signed-off-by: Daniel Kiper <daniel.kiper@oracle.com>
---
v2 - suggestions/fixes:
   - add missing the articles
     (suggested by Andrew Cooper).
---
 doc/multiboot.texi |   11 +++++++++++
 1 file changed, 11 insertions(+)

Patch
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diff --git a/doc/multiboot.texi b/doc/multiboot.texi
index 13e4e80..35f2bed 100644
--- a/doc/multiboot.texi
+++ b/doc/multiboot.texi
@@ -941,6 +941,10 @@  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 the loaded image (EFI boot services
+not terminated tag exists in Multiboot2 information structure).
+
 @subsection BIOS Boot device
 @example
 @group
@@ -1092,6 +1096,10 @@  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 the loaded image (EFI boot services
+not terminated tag exists in Multiboot2 information structure).
+
 @subsection Boot loader name
 @example
 @group
@@ -1324,6 +1332,9 @@  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 the loaded image (EFI boot services
+not terminated tag exists in Multiboot2 information structure).
 
 @subsection EFI boot services not terminated
 @example