All callers are __init or __cpuinit so there is no need
to hold this code without CPU_HOTPLUG being set.
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
- remove useless read of APIC_LVR
- wrap with preempt_disable/enable
- check for integrated APIC just in place
v2: fix by Yinghai Lu.
fix lapic_is_integrated using
let 64-bit too have pic_mode
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Do not check for SPUTIOUS_APIC_VECTOR definition twice.
Check it once - is what we need.
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
We don't really use it now on 64bit mode but
could reserve it for future.
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
There is no need to hold this code if CPU_HOTPLUG is not
defined.
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Initialize vector_irq for the vmi used vector, to point to correct irq.
Signed-off-by: Alok N Kataria <akataria@vmware.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
otherwise Xen is _completely_ unusable with 5 or more VCPUs.
(when !CONFIG_HAVE_SPARSE_IRQ).
based on Alex Nixon's patch.
also add +1 offset after redir_entries
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Acked-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Acked-by: Alex Nixon <alex.nixon@citrix.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Missed two lines when copying.
Fix panic on one of Ingo's machines that need to adjust ioapic id when
acpi off/ 32bit.
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Suresh Siddha noticed that we should have a spinlock around it.
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
In irq_2_iommu_alloc() and set_irte_irq(), irq_to_desc or
irq_2_iommu pointers may not be allocated. So use the routines
which will allocate them if they are not already allocated.
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
fix warning:
arch/x86/kernel/io_apic.c: In function ‘print_local_APIC’:
arch/x86/kernel/io_apic.c:1786: warning: format ‘%08x’ expects type ‘unsigned int’, but argument 2 has type ‘u64’
arch/x86/kernel/io_apic.c:1787: warning: format ‘%08x’ expects type ‘unsigned int’, but argument 2 has type ‘u64’
By creating uniform behavior on 32-bit and 64-bit and printing out the ICR
value in two 32-bit words.
Code has changed:
text data bss dec hex filename
22901 19650 17040 59591 e8c7 io_apic.o.before
22899 19650 17040 59589 e8c5 io_apic.o.after
Due to the 32-bit cast narrowing the printed out value on 64-bit.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Following commit 9c3f2468d8339866d9ef6a25aae31a8909c6be0d, do_IRQ()
looks up the IRQ number in the per-cpu variable vector_irq.
This commit makes Xen initialise an identity vector_irq map for both X86_32 and X86_64.
Signed-off-by: Alex Nixon <alex.nixon@citrix.com>
Acked-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
When sparse IRQs are enabled, it is not safe to assume an IRQ descriptor
exists for every possible IRQ. This patch causes init_evtchn_cpu_bindings
to skip initialisation of IRQ descriptors which don't exist.
Signed-off-by: Alex Nixon <alex.nixon@citrix.com>
Acked-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Yinghai Lu
Cyrill Gorcunov
Alok Kataria
Suresh Siddha
Ingo Molnar
Alex Nixon