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Subject[tip: x86/apic] x86/xen/pv: Pretend that it found SMP configuration
The following commit has been merged into the x86/apic branch of tip:

Commit-ID: 24889a3a5314f71e7bca586b607882d87c71799c
Gitweb: https://git.kernel.org/tip/24889a3a5314f71e7bca586b607882d87c71799c
Author: Thomas Gleixner <tglx@linutronix.de>
AuthorDate: Tue, 08 Aug 2023 15:03:49 -07:00
Committer: Dave Hansen <dave.hansen@linux.intel.com>
CommitterDate: Wed, 09 Aug 2023 11:58:21 -07:00

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)
---
arch/x86/xen/smp_pv.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/x86/xen/smp_pv.c b/arch/x86/xen/smp_pv.c
index c6b42c6..a0f07bb 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)
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