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| author | Thomas Gleixner <tglx@linutronix.de> | 2017-09-13 23:29:33 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2017-09-25 20:51:54 +0200 |
| commit | 3534be05e4adc303d41fae65901598695adea685 (patch) | |
| tree | d5efa0f780e83ab68a78cb7e8ffa7b35bab22ee0 /arch/x86/kernel/apic | |
| parent | dccfe3147b42b78458ab8e4440822c805ee76d72 (diff) | |
| download | talos-op-linux-3534be05e4adc303d41fae65901598695adea685.tar.gz talos-op-linux-3534be05e4adc303d41fae65901598695adea685.zip | |
x86/ioapic: Mark legacy vectors at reallocation time
When the legacy PIC vectors are taken over by the IO APIC the current
vector assignement code is tricked to reuse the vector by allocating the
apic data in the early boot process. This can be avoided by marking the
allocation as legacy PIC take over. Preparatory patch for further cleanups.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Juergen Gross <jgross@suse.com>
Tested-by: Yu Chen <yu.c.chen@intel.com>
Acked-by: Juergen Gross <jgross@suse.com>
Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: Alok Kataria <akataria@vmware.com>
Cc: Joerg Roedel <joro@8bytes.org>
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Rui Zhang <rui.zhang@intel.com>
Cc: "K. Y. Srinivasan" <kys@microsoft.com>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Len Brown <lenb@kernel.org>
Link: https://lkml.kernel.org/r/20170913213154.700501979@linutronix.de
Diffstat (limited to 'arch/x86/kernel/apic')
| -rw-r--r-- | arch/x86/kernel/apic/io_apic.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c index 81f35ae3f884..a4b0c60ab8e1 100644 --- a/arch/x86/kernel/apic/io_apic.c +++ b/arch/x86/kernel/apic/io_apic.c @@ -1013,6 +1013,7 @@ static int alloc_isa_irq_from_domain(struct irq_domain *domain, info->ioapic_pin)) return -ENOMEM; } else { + info->flags |= X86_IRQ_ALLOC_LEGACY; irq = __irq_domain_alloc_irqs(domain, irq, 1, node, info, true, NULL); if (irq >= 0) { |
