diff --git a/drivers/firmware/efi/libstub/efi-stub.c b/drivers/firmware/efi/libstub/efi-stub.c
index 975148f986bf..6db10590f89b 100644
--- a/drivers/firmware/efi/libstub/efi-stub.c
+++ b/drivers/firmware/efi/libstub/efi-stub.c
@@ -83,6 +83,14 @@ static void install_memreserve_table(void)
 	struct linux_efi_memreserve *rsv;
 	efi_status_t status;
 
+	/*
+	 * If an earlier boot stage installed a memreserve table already, e.g.,
+	 * a kexec loader passing on the persistent reservations made by the
+	 * previous kernel, use it as is: installing a new one would replace it.
+	 */
+	if (get_efi_config_table(memreserve_table_guid))
+		return;
+
 	status = efi_bs_call(allocate_pool, EFI_LOADER_DATA, sizeof(*rsv),
 			     (void **)&rsv);
 	if (status != EFI_SUCCESS) {