lmb: add a flag to allow suppressing memory map change notification
Add a flag LMB_NONOTIFY that can be passed to the LMB API's for
reserving memory. This will then result in no notification being sent
from the LMB module for the changes to the LMB's memory map.
While here, also add a description of the memory attributes that the
flags signify.
Signed-off-by: Sughosh Ganu <sughosh.ganu@linaro.org>
diff --git a/include/lmb.h b/include/lmb.h
index 0e8426f..ec477c1 100644
--- a/include/lmb.h
+++ b/include/lmb.h
@@ -18,11 +18,14 @@
* enum lmb_flags - definition of memory region attributes
* @LMB_NONE: no special request
* @LMB_NOMAP: don't add to mmu configuration
+ * @LMB_NOOVERWRITE: the memory region cannot be overwritten/re-reserved
+ * @LMB_NONOTIFY: do not notify other modules of changes to this memory region
*/
enum lmb_flags {
LMB_NONE = 0,
LMB_NOMAP = BIT(1),
LMB_NOOVERWRITE = BIT(2),
+ LMB_NONOTIFY = BIT(3),
};
/**
diff --git a/lib/lmb.c b/lib/lmb.c
index a38537a..e1e6166 100644
--- a/lib/lmb.c
+++ b/lib/lmb.c
@@ -30,7 +30,7 @@
static void lmb_print_region_flags(enum lmb_flags flags)
{
u64 bitpos;
- const char *flag_str[] = { "none", "no-map", "no-overwrite" };
+ const char *flag_str[] = { "none", "no-map", "no-overwrite", "no-notify" };
do {
bitpos = flags ? fls(flags) - 1 : 0;