From: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Date: Thu, 10 Oct 2024 07:01:26 +0000 (+0200)
Subject: powerpc/pseries/lparcfg: Use num_possible_cpus() for potential processors
X-Git-Tag: v6.13-rc1~172^2~5
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=e07359f171f2440f4dbc98339b10c8c3cdd48a20;p=thirdparty%2Fkernel%2Flinux.git

powerpc/pseries/lparcfg: Use num_possible_cpus() for potential processors

The systemcfg processorCount variable tracks currently online variables,
not possible ones, so the stored value is wrong.
The code preferably tries to use the ibm,lrdr-capacity field 4 which
"represents the maximum number of processors that the guest can have."
Switch from processorCount to the better matching num_possible_cpus().

Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/all/20241010-vdso-generic-base-v1-24-b64f0842d512@linutronix.de
---

diff --git a/arch/powerpc/platforms/pseries/lparcfg.c b/arch/powerpc/platforms/pseries/lparcfg.c
index acc640fccca17..cc22924f159f5 100644
--- a/arch/powerpc/platforms/pseries/lparcfg.c
+++ b/arch/powerpc/platforms/pseries/lparcfg.c
@@ -29,7 +29,6 @@
 #include <asm/firmware.h>
 #include <asm/rtas.h>
 #include <asm/time.h>
-#include <asm/vdso_datapage.h>
 #include <asm/vio.h>
 #include <asm/mmu.h>
 #include <asm/machdep.h>
@@ -530,7 +529,7 @@ static int pseries_lparcfg_data(struct seq_file *m, void *v)
 		lrdrp = of_get_property(rtas_node, "ibm,lrdr-capacity", NULL);
 
 	if (lrdrp == NULL) {
-		partition_potential_processors = vdso_data->processorCount;
+		partition_potential_processors = num_possible_cpus();
 	} else {
 		partition_potential_processors = be32_to_cpup(lrdrp + 4);
 	}