diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2019-07-22 20:47:19 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2019-07-25 16:11:59 +0200 |
| commit | 3994ff90acc3b115734fe532720c37a499c502ce (patch) | |
| tree | c14e2cdc05a9fbb7524e55dd9433cbfd9ba9e6c1 /arch/x86/kernel/apic/ipi.c | |
| parent | 60dcaad5736faff5a6b1abba5a292499f57197fe (diff) | |
x86/apic: Remove dest argument from __default_send_IPI_shortcut()
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>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20190722105220.094613426@linutronix.de
Diffstat (limited to 'arch/x86/kernel/apic/ipi.c')
| -rw-r--r-- | arch/x86/kernel/apic/ipi.c | 15 |
1 files changed, 7 insertions, 8 deletions
diff --git a/arch/x86/kernel/apic/ipi.c b/arch/x86/kernel/apic/ipi.c index 6fa9f6ca7eef..50c9dcc6f60e 100644 --- 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(void) 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(unsigned int shortcut, int vector, unsigned int __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 vector) 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 */ |