On 31.07.23 17:57, Thomas Gleixner wrote:
On Mon, Jul 31 2023 at 14:50, Thomas Gleixner wrote:
Why can't XENPV pretend that it has a smp configuration detected,
i.e. setting smp_found_config as any other special get_smp_config()
implementation does?
The below should do the trick, no?
Something like that, yes.
I'm just hunting another regression in the series. With patch 23 of the
topology series applied the APs of a Xen PV guests won't be onlined. I
guess this is due to missing topology data initialization somewhere in
the Xen related code.
I'll check your suggestion after finding the reason for the regression.
--- a/arch/x86/xen/smp_pv.c
+++ b/arch/x86/xen/smp_pv.c
@@ -182,7 +182,8 @@ static void __init _get_smp_config(unsig
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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