From: Thomas Gleixner <tglx@linutronix.de>
To: Juergen Gross <jgross@suse.com>, LKML <linux-kernel@vger.kernel.org>
Cc: x86@kernel.org, Andrew Cooper <andrew.cooper3@citrix.com>,
Tom Lendacky <thomas.lendacky@amd.com>,
Paolo Bonzini <pbonzini@redhat.com>, Wei Liu <wei.liu@kernel.org>,
Arjan van de Ven <arjan@linux.intel.com>,
Michael Kelley <mikelley@microsoft.com>,
Peter Keresztes Schmidt <peter@keresztesschmidt.de>,
"Peter Zijlstra (Intel)" <peterz@infradead.org>
Subject: Re: [patch V2 16/58] x86/apic: Sanitize num_processors handling
Date: Mon, 31 Jul 2023 17:57:13 +0200 [thread overview]
Message-ID: <87mszcnkfa.ffs@tglx> (raw)
In-Reply-To: <87y1iwnt34.ffs@tglx>
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?
--- 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)
next prev parent reply other threads:[~2023-07-31 15:57 UTC|newest]
Thread overview: 81+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-07-24 13:33 [patch V2 00/58] x86/apic: Decrapification and static calls Thomas Gleixner
2023-07-24 13:33 ` [patch V2 01/58] x86/cpu: Make identify_boot_cpu() static Thomas Gleixner
2023-07-24 13:33 ` [patch V2 02/58] x86/cpu: Remove unused physid_*() nonsense Thomas Gleixner
2023-07-24 13:33 ` [patch V2 03/58] x86/apic: Rename disable_apic Thomas Gleixner
2023-07-24 13:33 ` [patch V2 04/58] x86/apic/ioapic: Rename skip_ioapic_setup Thomas Gleixner
2023-07-24 13:33 ` [patch V2 05/58] x86/apic: Remove pointless x86_bios_cpu_apicid Thomas Gleixner
2023-07-24 13:33 ` [patch V2 06/58] x86/apic: Get rid of hard_smp_processor_id() Thomas Gleixner
2023-07-24 13:33 ` [patch V2 07/58] x86/apic: Remove unused max_physical_apicid Thomas Gleixner
2023-07-24 13:33 ` [patch V2 08/58] x86/apic: Nuke unused apic::inquire_remote_apic() Thomas Gleixner
2023-07-24 13:33 ` [patch V2 09/58] x86/apic: Get rid of boot_cpu_physical_apicid madness Thomas Gleixner
2023-07-24 13:34 ` [patch V2 10/58] x86/apic: Register boot CPU APIC early Thomas Gleixner
2023-07-24 13:34 ` [patch V2 11/58] x86/apic: Remove the pointless APIC version check Thomas Gleixner
2023-07-24 13:34 ` [patch V2 12/58] x86/of: Fix the APIC address registration Thomas Gleixner
2023-07-24 13:34 ` [patch V2 13/58] x86/apic: Make some APIC init functions bool Thomas Gleixner
2023-07-24 13:34 ` [patch V2 14/58] x86/apic: Split register_apic_address() Thomas Gleixner
2023-07-24 13:34 ` [patch V2 15/58] x86/apic: Sanitize APIC address setup Thomas Gleixner
2023-07-24 13:34 ` [patch V2 16/58] x86/apic: Sanitize num_processors handling Thomas Gleixner
2023-07-31 10:17 ` Juergen Gross
2023-07-31 12:50 ` Thomas Gleixner
2023-07-31 15:57 ` Thomas Gleixner [this message]
2023-07-31 18:19 ` Juergen Gross
2023-08-01 6:12 ` Juergen Gross
2023-07-24 13:34 ` [patch V2 17/58] x86/apic: Nuke another processor check Thomas Gleixner
2023-07-24 13:34 ` [patch V2 18/58] x86/apic: Remove check_phys_apicid_present() Thomas Gleixner
2023-07-24 13:34 ` [patch V2 19/58] x86/apic: Get rid of apic_phys Thomas Gleixner
2023-07-24 13:34 ` [patch V2 20/58] x86/apic/32: Sanitize logical APIC ID handling Thomas Gleixner
2023-07-24 13:34 ` [patch V2 21/58] x86/apic/32: Remove x86_cpu_to_logical_apicid Thomas Gleixner
2023-07-24 13:34 ` [patch V2 22/58] x86/apic/ipi: Code cleanup Thomas Gleixner
2023-07-24 13:34 ` [patch V2 23/58] x86/apic: Mop up early_per_cpu() abuse Thomas Gleixner
2023-07-24 13:34 ` [patch V2 24/58] x86/apic/32: Remove pointless default_acpi_madt_oem_check() Thomas Gleixner
2023-07-24 13:34 ` [patch V2 25/58] x86/apic/32: Decrapify the def_bigsmp mechanism Thomas Gleixner
2023-07-24 13:34 ` [patch V2 26/58] x86/apic/32: Remove bigsmp_cpu_present_to_apicid() Thomas Gleixner
2023-07-24 13:34 ` [patch V2 27/58] x86/apic: Nuke empty init_apic_ldr() callbacks Thomas Gleixner
2023-07-24 13:34 ` [patch V2 28/58] x86/apic: Nuke apic::apicid_to_cpu_present() Thomas Gleixner
2023-07-24 13:34 ` [patch V2 29/58] x86/ioapic/32: Decrapify phys_id_present_map operation Thomas Gleixner
2023-07-24 13:34 ` [patch V2 30/58] x86/apic: Mop up *setup_apic_routing() Thomas Gleixner
2023-07-24 13:34 ` [patch V2 31/58] x86/apic: Mop up apic::apic_id_registered() Thomas Gleixner
2023-07-24 13:34 ` [patch V2 32/58] x86/apic/ipi: Tidy up the code and fixup comments Thomas Gleixner
2023-07-24 13:34 ` [patch V2 33/58] x86/apic: Consolidate wait_icr_idle() implementations Thomas Gleixner
2023-07-24 13:34 ` [patch V2 34/58] x86/apic: Allow apic::wait_icr_idle() to be NULL Thomas Gleixner
2023-07-24 13:34 ` [patch V2 35/58] x86/apic: Allow apic::safe_wait_icr_idle() " Thomas Gleixner
2023-07-24 13:34 ` [patch V2 36/58] x86/apic: Move safe wait_icr_idle() next to apic_mem_wait_icr_idle() Thomas Gleixner
2023-07-24 13:34 ` [patch V2 37/58] x86/apic/uv: Get rid of wrapper callbacks Thomas Gleixner
2023-07-24 13:34 ` [patch V2 38/58] x86/apic/x2apic: Share all common IPI functions Thomas Gleixner
2023-07-24 13:34 ` [patch V2 39/58] x86/apic/64: Uncopypaste probing Thomas Gleixner
2023-07-24 13:34 ` [patch V2 40/58] x86/apic: Wrap APIC ID validation into an inline Thomas Gleixner
2023-07-24 13:34 ` [patch V2 41/58] x86/apic: Add max_apic_id member Thomas Gleixner
2023-07-24 13:34 ` [patch V2 42/58] x86/apic: Simplify X2APIC ID validation Thomas Gleixner
2023-07-24 13:34 ` [patch V2 43/58] x86/apic: Prepare x2APIC for using apic::max_apic_id Thomas Gleixner
2023-07-24 13:35 ` [patch V2 44/58] x86/apic: Sanitize APID ID range validation Thomas Gleixner
2023-07-24 13:35 ` [patch V2 45/58] x86/apic: Remove pointless NULL initializations Thomas Gleixner
2023-07-24 13:35 ` [patch V2 46/58] x86/apic/noop: Tidy up the code Thomas Gleixner
2023-07-24 13:35 ` [patch V2 47/58] x86/apic: Remove pointless arguments from [native_]eoi_write() Thomas Gleixner
2023-07-24 13:35 ` [patch V2 48/58] x86/apic: Nuke ack_APIC_irq() Thomas Gleixner
2023-07-24 13:35 ` [patch V2 49/58] x86/apic: Wrap apic->native_eoi() into a helper Thomas Gleixner
2023-07-24 13:35 ` [patch V2 50/58] x86/apic: Provide common init infrastructure Thomas Gleixner
2023-07-31 11:31 ` Juergen Gross
2023-07-31 13:01 ` Thomas Gleixner
2023-07-31 13:10 ` Juergen Gross
2023-07-31 15:48 ` Thomas Gleixner
2023-08-01 6:41 ` Thomas Gleixner
2023-08-01 6:49 ` Juergen Gross
2023-08-01 7:08 ` Juergen Gross
2023-08-01 7:32 ` Thomas Gleixner
2023-08-01 7:37 ` Juergen Gross
2023-08-01 8:23 ` Thomas Gleixner
2023-08-01 8:25 ` Juergen Gross
2023-08-01 8:54 ` Thomas Gleixner
2023-08-01 8:59 ` Juergen Gross
2023-08-09 20:36 ` [tip: x86/apic] x86/xen/apic: Use standard apic driver mechanism for Xen PV tip-bot2 for Juergen Gross
2023-08-01 7:30 ` [patch V2 50/58] x86/apic: Provide common init infrastructure Thomas Gleixner
2023-07-24 13:35 ` [patch V2 51/58] x86/apic: Provide apic_update_callback() Thomas Gleixner
2023-07-24 13:35 ` [patch V2 52/58] x86/apic: Replace acpi_wake_cpu_handler_update() and apic_set_eoi_cb() Thomas Gleixner
2023-07-24 13:35 ` [patch V2 53/58] x86/apic: Convert other overrides to apic_update_callback() Thomas Gleixner
2023-07-24 13:35 ` [patch V2 54/58] x86/xen/apic: Mark apic __ro_after_init Thomas Gleixner
2023-07-24 13:35 ` [patch V2 55/58] x86/apic: Mark all hotpath APIC callback wrappers __always_inline Thomas Gleixner
2023-07-24 13:35 ` [patch V2 56/58] x86/apic: Wrap IPI calls into helper functions Thomas Gleixner
2023-07-24 13:35 ` [patch V2 57/58] x86/apic: Provide static call infrastructure for APIC callbacks Thomas Gleixner
2023-07-24 13:35 ` [patch V2 58/58] x86/apic: Turn on static calls Thomas Gleixner
2023-07-25 0:40 ` [patch V2 00/58] x86/apic: Decrapification and " Sohil Mehta
2023-07-31 12:20 ` Juergen Gross
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