From: Thomas Gleixner <tglx@linutronix.de>
To: LKML <linux-kernel@vger.kernel.org>
Cc: x86@kernel.org, Nadav Amit <namit@vmware.com>,
Ricardo Neri <ricardo.neri-calderon@linux.intel.com>,
Stephane Eranian <eranian@google.com>,
Feng Tang <feng.tang@intel.com>
Subject: [patch V2 14/25] x86/apic: Remove dest argument from __default_send_IPI_shortcut()
Date: Thu, 04 Jul 2019 17:51:59 +0200 [thread overview]
Message-ID: <20190704155609.652485496@linutronix.de> (raw)
In-Reply-To: 20190704155145.617706117@linutronix.de
The SDM states:
"The destination shorthand field of the ICR allows the delivery mode to be
by-passed in favor of broadcasting the IPI to all the processors on the
system bus and/or back to itself (see Section 10.6.1, Interrupt Command
Register (ICR)). Three destination shorthands are supported: self, all
excluding self, and all including self. The destination mode is ignored
when a destination shorthand is used."
So there is no point to supply the destination mode to the shorthand
delivery function.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
arch/x86/kernel/apic/apic_flat_64.c | 6 ++----
arch/x86/kernel/apic/ipi.c | 15 +++++++--------
arch/x86/kernel/apic/local.h | 2 +-
arch/x86/kernel/apic/probe_64.c | 2 +-
4 files changed, 11 insertions(+), 14 deletions(-)
--- a/arch/x86/kernel/apic/apic_flat_64.c
+++ b/arch/x86/kernel/apic/apic_flat_64.c
@@ -90,8 +90,7 @@ static void flat_send_IPI_allbutself(int
_flat_send_IPI_mask(mask, vector);
}
} else if (num_online_cpus() > 1) {
- __default_send_IPI_shortcut(APIC_DEST_ALLBUT,
- vector, apic->dest_logical);
+ __default_send_IPI_shortcut(APIC_DEST_ALLBUT, vector);
}
}
@@ -100,8 +99,7 @@ static void flat_send_IPI_all(int vector
if (vector == NMI_VECTOR) {
flat_send_IPI_mask(cpu_online_mask, vector);
} else {
- __default_send_IPI_shortcut(APIC_DEST_ALLINC,
- vector, apic->dest_logical);
+ __default_send_IPI_shortcut(APIC_DEST_ALLINC, vector);
}
}
--- a/arch/x86/kernel/apic/ipi.c
+++ b/arch/x86/kernel/apic/ipi.c
@@ -16,7 +16,7 @@ static inline void __xapic_wait_icr_idle
cpu_relax();
}
-void __default_send_IPI_shortcut(unsigned int shortcut, int vector, unsigned int dest)
+void __default_send_IPI_shortcut(unsigned int shortcut, int vector)
{
/*
* Subtle. In the case of the 'never do double writes' workaround
@@ -33,9 +33,10 @@ void __default_send_IPI_shortcut(unsigne
__xapic_wait_icr_idle();
/*
- * No need to touch the target chip field
+ * No need to touch the target chip field. Also the destination
+ * mode is ignored when a shorthand is used.
*/
- cfg = __prepare_ICR(shortcut, vector, dest);
+ cfg = __prepare_ICR(shortcut, vector, 0);
/*
* Send the IPI. The write to APIC_ICR fires this off.
@@ -202,8 +203,7 @@ void default_send_IPI_allbutself(int vec
if (no_broadcast || vector == NMI_VECTOR) {
apic->send_IPI_mask_allbutself(cpu_online_mask, vector);
} else {
- __default_send_IPI_shortcut(APIC_DEST_ALLBUT, vector,
- apic->dest_logical);
+ __default_send_IPI_shortcut(APIC_DEST_ALLBUT, vector);
}
}
@@ -212,14 +212,13 @@ void default_send_IPI_all(int vector)
if (no_broadcast || vector == NMI_VECTOR) {
apic->send_IPI_mask(cpu_online_mask, vector);
} else {
- __default_send_IPI_shortcut(APIC_DEST_ALLINC, vector,
- apic->dest_logical);
+ __default_send_IPI_shortcut(APIC_DEST_ALLINC, vector);
}
}
void default_send_IPI_self(int vector)
{
- __default_send_IPI_shortcut(APIC_DEST_SELF, vector, apic->dest_logical);
+ __default_send_IPI_shortcut(APIC_DEST_SELF, vector);
}
/* must come after the send_IPI functions above for inlining */
--- a/arch/x86/kernel/apic/local.h
+++ b/arch/x86/kernel/apic/local.h
@@ -38,7 +38,7 @@ static inline unsigned int __prepare_ICR
return icr;
}
-void __default_send_IPI_shortcut(unsigned int shortcut, int vector, unsigned int dest);
+void __default_send_IPI_shortcut(unsigned int shortcut, int vector);
/*
* This is used to send an IPI with no shorthand notation (the destination is
--- a/arch/x86/kernel/apic/probe_64.c
+++ b/arch/x86/kernel/apic/probe_64.c
@@ -40,7 +40,7 @@ void __init default_setup_apic_routing(v
void apic_send_IPI_self(int vector)
{
- __default_send_IPI_shortcut(APIC_DEST_SELF, vector, APIC_DEST_PHYSICAL);
+ __default_send_IPI_shortcut(APIC_DEST_SELF, vector);
}
int __init default_acpi_madt_oem_check(char *oem_id, char *oem_table_id)
next prev parent reply other threads:[~2019-07-04 16:35 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-04 15:51 [patch V2 00/25] x86/apic: Support for IPI shorthands Thomas Gleixner
2019-07-04 15:51 ` [patch V2 01/25] x86/kgbd: Use NMI_VECTOR not APIC_DM_NMI Thomas Gleixner
2019-07-05 21:43 ` Thomas Gleixner
2019-07-04 15:51 ` [patch V2 02/25] x86/apic: Invoke perf_events_lapic_init() after enabling APIC Thomas Gleixner
2019-07-04 15:51 ` [patch V2 03/25] x86/apic: Soft disable APIC before initializing it Thomas Gleixner
2019-07-04 15:51 ` [patch V2 04/25] x86/apic: Make apic_pending_intr_clear() more robust Thomas Gleixner
2019-07-05 15:47 ` Andrew Cooper
2019-07-05 19:06 ` Andy Lutomirski
2019-07-05 20:17 ` Andrew Cooper
2019-07-05 20:36 ` Thomas Gleixner
2019-07-05 20:39 ` Andy Lutomirski
2019-07-07 8:27 ` Thomas Gleixner
2019-07-05 19:19 ` Nadav Amit
2019-07-05 20:47 ` Andrew Cooper
2019-07-05 20:25 ` Thomas Gleixner
2019-07-05 20:37 ` Andy Lutomirski
2019-07-05 20:49 ` Paolo Bonzini
2019-07-05 21:16 ` Andrew Cooper
2019-07-07 8:37 ` Thomas Gleixner
2019-07-09 14:43 ` Thomas Gleixner
2019-07-04 15:51 ` [patch V2 05/25] x86/apic: Move IPI inlines into ipi.c Thomas Gleixner
2019-07-04 15:51 ` [patch V2 06/25] x86/apic: Cleanup the include maze Thomas Gleixner
2019-07-04 15:51 ` [patch V2 07/25] x86/apic: Move ipi header into apic directory Thomas Gleixner
2019-07-04 15:51 ` [patch V2 08/25] x86/apic: Move apic_flat_64 " Thomas Gleixner
2019-07-04 15:51 ` [patch V2 09/25] x86/apic: Consolidate the apic local headers Thomas Gleixner
2019-07-04 15:51 ` [patch V2 10/25] x86/apic/uv: Make x2apic_extra_bits static Thomas Gleixner
2019-07-04 15:51 ` [patch V2 11/25] smp/hotplug: Track booted once CPUs in a cpumask Thomas Gleixner
2019-07-04 15:51 ` [patch V2 12/25] x86/cpu: Move arch_smt_update() to a neutral place Thomas Gleixner
2019-07-04 15:51 ` [patch V2 13/25] x86/hotplug: Silence APIC and NMI when CPU is dead Thomas Gleixner
2019-07-04 15:51 ` Thomas Gleixner [this message]
2019-07-04 15:52 ` [patch V2 15/25] x86/apic: Add NMI_VECTOR wait to IPI shorthand Thomas Gleixner
2019-07-04 15:52 ` [patch V2 16/25] x86/apic: Move no_ipi_broadcast() out of 32bit Thomas Gleixner
2019-07-04 15:52 ` [patch V2 17/25] x86/apic: Add static key to Control IPI shorthands Thomas Gleixner
2019-07-04 15:52 ` [patch V2 18/25] x86/apic: Provide and use helper for send_IPI_allbutself() Thomas Gleixner
2019-07-04 15:52 ` [patch V2 19/25] cpumask: Implement cpumask_or_equal() Thomas Gleixner
2019-07-04 15:52 ` [patch V2 20/25] x86/smp: Move smp_function_call implementations into IPI code Thomas Gleixner
2019-07-04 15:52 ` [patch V2 21/25] x86/smp: Enhance native_send_call_func_ipi() Thomas Gleixner
2019-07-05 1:26 ` Nadav Amit
2019-07-04 15:52 ` [patch V2 22/25] x86/apic: Remove the shorthand decision logic Thomas Gleixner
2019-07-04 15:52 ` [patch V2 23/25] x86/apic: Share common IPI helpers Thomas Gleixner
2019-07-04 15:52 ` [patch V2 24/25] x86/apic/flat64: Remove the IPI shorthand decision logic Thomas Gleixner
2019-07-04 15:52 ` [patch V2 25/25] x86/apic/x2apic: Implement IPI shorthands support Thomas Gleixner
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