From: Thomas Gleixner <tglx@linutronix.de>
Date: Tue, 8 Aug 2023 22:03:49 +0000 (-0700)
Subject: x86/xen/pv: Pretend that it found SMP configuration
X-Git-Tag: v6.6-rc1~141^2~44
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=24889a3a5314f71e7bca586b607882d87c71799c;p=thirdparty%2Flinux.git

x86/xen/pv: Pretend that it found SMP configuration

Unlike all other SMP configuration "parsers" XEN/PV does not set
smp_found_config which is inconsistent and prevents doing proper decision
logic based on this flag.

Make XEN/PV pretend that it found SMP configuration.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Tested-by: Michael Kelley <mikelley@microsoft.com>
Tested-by: Sohil Mehta <sohil.mehta@intel.com>
Tested-by: Juergen Gross <jgross@suse.com> # Xen PV (dom0 and unpriv. guest)
---

diff --git a/arch/x86/xen/smp_pv.c b/arch/x86/xen/smp_pv.c
index c6b42c66c60c5..a0f07bbfcd6e3 100644
--- a/arch/x86/xen/smp_pv.c
+++ b/arch/x86/xen/smp_pv.c
@@ -182,7 +182,8 @@ static void __init _get_smp_config(unsigned int early)
 	if (subtract)
 		set_nr_cpu_ids(nr_cpu_ids - subtract);
 #endif
-
+	/* Pretend to be a proper enumerated system */
+	smp_found_config = 1;
 }
 
 static void __init xen_pv_smp_prepare_boot_cpu(void)