48 lines
1.5 KiB
Diff
48 lines
1.5 KiB
Diff
commit 4443a68d523043d69195e5a5a27fb9fc7ae8c50f
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Author: Shrikanth Hegde <sshegde@linux.ibm.com>
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Date: Mon Mar 10 22:29:16 2025 +0530
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lparstat: print memory mode correctly (revised)
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Starting from power10, active memory sharing(AMS) is not supported.
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So from power10 onwards the H_GET_MPP hcall fails and hence
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corresponding fields in lparcfg are not populated, such as
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entitled_memory_pool_number etc.
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Use HWCAP mechanism and print memory model as dedicated for power10
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onwards.
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Suggested-by: Peter Bergner <bergner@linux.ibm.com>
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Signed-off-by: Shrikanth Hegde <sshegde@linux.ibm.com>
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Signed-off-by: Tyrel Datwyler <tyreld@linux.ibm.com>
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diff --git a/src/lparstat.c b/src/lparstat.c
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index db22316..8eddd7c 100644
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--- a/src/lparstat.c
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+++ b/src/lparstat.c
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@@ -37,6 +37,11 @@
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#include "pseries_platform.h"
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#include "cpu_info_helpers.h"
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#include <time.h>
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+#include <sys/auxv.h>
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+
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+#ifndef PPC_FEATURE2_ARCH_3_1
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+#define PPC_FEATURE2_ARCH_3_1 0x00040000
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+#endif
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#define LPARCFG_FILE "/proc/ppc64/lparcfg"
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#define SE_NOT_FOUND "???"
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@@ -794,7 +799,11 @@ void get_memory_mode(struct sysentry *se, char *buf)
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struct sysentry *tmp;
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tmp = get_sysentry("entitled_memory_pool_number");
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- if (atoi(tmp->value) == 65535)
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+ /*
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+ * from power10 onwards Active Memory Sharing(AMS) is not
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+ * supported. Hence always display it as dedicated for those
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+ */
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+ if (atoi(tmp->value) == 65535 || (getauxval(AT_HWCAP2) & PPC_FEATURE2_ARCH_3_1))
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sprintf(buf, "Dedicated");
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else
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sprintf(buf, "Shared");
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