File lparstat-print-memory-mode-correctly.patch of Package powerpc-utils.37742

From b6f50dc565eea17ce35389555489e9d8da3be9f3 Mon Sep 17 00:00:00 2001
From: Shrikanth Hegde <sshegde@linux.ibm.com>
Date: Mon, 3 Mar 2025 09:36:47 +0530
Subject: [PATCH] lparstat: print memory mode correctly

Patch-mainline: expected 1.3.14
Git-commit: b6f50dc565eea17ce35389555489e9d8da3be9f3

Starting from power10, active memory sharing(AMS) is not supported.
So from power10 onwards the H_GET_MPP hcall fails and hence
corresponding fields in lparcfg are not populated, such as
entitled_memory_pool_number etc.

Use gcc builtins and print memory model as dedicated for power10
onwards.

Suggested-by: Peter Bergner <bergner@linux.ibm.com>
Signed-off-by: Shrikanth Hegde <sshegde@linux.ibm.com>
[tyreld: fixup arch test to use newly defined BUILTIN wrapper]
Signed-off-by: Tyrel Datwyler <tyreld@linux.ibm.com>
---
 src/common/cpu_info_helpers.h | 6 ++++++
 src/lparstat.c                | 6 +++++-
 2 files changed, 11 insertions(+), 1 deletion(-)

Index: powerpc-utils-1.3.13/src/lparstat.c
===================================================================
--- powerpc-utils-1.3.13.orig/src/lparstat.c
+++ powerpc-utils-1.3.13/src/lparstat.c
@@ -31,6 +31,7 @@
 #include <fcntl.h>
 #include <sched.h>
 #include <signal.h>
+#include <sys/auxv.h>
 #include <sys/stat.h>
 #include <sys/time.h>
 #include "lparstat.h"
@@ -789,7 +790,11 @@ void get_memory_mode(struct sysentry *se
 	struct sysentry *tmp;
 
 	tmp = get_sysentry("entitled_memory_pool_number");
-	if (atoi(tmp->value) == 65535)
+	/*
+	 * from power10 onwards Active Memory Sharing(AMS) is not
+	 * supported. Hence always display it as dedicated for those
+	 */
+	if (atoi(tmp->value) == 65535 || getauxval(AT_HWCAP2) & PPC_FEATURE2_ARCH_3_1)
 		sprintf(buf, "Dedicated");
 	else
 		sprintf(buf, "Shared");