The gpa_inside_migration_helper_shared_area will be used to skip
migrating RAM pages that are used by the migration helper at the target.
Signed-off-by: Dov Murik <dovmu...@linux.vnet.ibm.com>
---
migration/confidential-ram.h | 2 ++
migration/confidential-ram.c | 6 ++++++
2 files changed, 8 insertions(+)
diff --git a/migration/confidential-ram.h b/migration/confidential-ram.h
index ebe4073bce..9a1027bdaf 100644
--- a/migration/confidential-ram.h
+++ b/migration/confidential-ram.h
@@ -8,6 +8,8 @@
#include "exec/cpu-common.h"
#include "qemu-file.h"
+bool gpa_inside_migration_helper_shared_area(ram_addr_t gpa);
+
void cgs_mh_init(void);
void cgs_mh_cleanup(void);
diff --git a/migration/confidential-ram.c b/migration/confidential-ram.c
index fe317ee74b..0b821af774 100644
--- a/migration/confidential-ram.c
+++ b/migration/confidential-ram.c
@@ -68,6 +68,12 @@ static CGSMigHelperState cmhs = {0};
#define MH_SHARED_CMD_PARAMS_ADDR 0x820000
#define MH_SHARED_IO_PAGE_HDR_ADDR (MH_SHARED_CMD_PARAMS_ADDR + 0x800)
#define MH_SHARED_IO_PAGE_ADDR (MH_SHARED_CMD_PARAMS_ADDR + 0x1000)
+#define MH_SHARED_LAST_BYTE (MH_SHARED_CMD_PARAMS_ADDR + 0x1fff)
+
+bool gpa_inside_migration_helper_shared_area(ram_addr_t gpa)
+{
+ return gpa >= MH_SHARED_CMD_PARAMS_ADDR && gpa <= MH_SHARED_LAST_BYTE;
+}
void cgs_mh_init(void)
{
--
2.20.1
