On 9/5/24 10:28, Sughosh Ganu wrote:
Add a Kconfig symbol to enable getting updates on any memory map
changes that might be done by the LMB module. This notification
mechanism can then be used to have a synchronous view of allocated and
free memory.

Signed-off-by: Sughosh Ganu <sughosh.g...@linaro.org>
---
  lib/Kconfig | 11 +++++++++++
  1 file changed, 11 insertions(+)

diff --git a/lib/Kconfig b/lib/Kconfig
index 5f282ecb54..2e73cda580 100644
--- a/lib/Kconfig
+++ b/lib/Kconfig
@@ -74,6 +74,17 @@ config HAVE_PRIVATE_LIBGCC
  config LIB_UUID
        bool

+config MEM_MAP_UPDATE_NOTIFY
+       bool "Get notified of any changes to the LMB memory map"
+       depends on LMB && EFI_LOADER
+       select EVENT
+       default y
+       help
+         Enable this option to get notification on any changes to the
+         memory that is allocated or freed by the LMB module. This will
+         allow different modules that allocate memory or maintain a memory
+         map to have a synchronous view of available and allocated memory.

We should have only one store for all LMB allocations. They should not
be duplicated in the EFI sub-system.

The event is only needed to notify EFI_EVENT_GROUP_MEMORY_MAP_CHANGE.

Best regards

Heinrich


+
  config RANDOM_UUID
        bool "GPT Random UUID generation"
        select LIB_UUID

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