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x86, io_apic: Introduce x86_io_apic_ops.disable()

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This function pointer is used to call a system-specific
function for disabling the IO-APIC. Currently this is used
for IRQ remapping which has its own disable routine.

Also introduce the necessary infrastructure in the interrupt
remapping code to overwrite this and other function pointers
as necessary by interrupt remapping.

Signed-off-by: Joerg Roedel <joro@8bytes.org>
Acked-by: Sebastian Andrzej Siewior <sebastian@breakpoint.cc>
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
This commit is contained in:
Joerg Roedel 2012-09-26 12:44:35 +02:00
parent 336224ba5e
commit 1c4248ca4e
5 changed files with 62 additions and 32 deletions
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9
arch/x86/kernel/x86_init.c
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@ -118,8 +118,9 @@ struct x86_msi_ops x86_msi = {
};
struct x86_io_apic_ops x86_io_apic_ops = {
.init = native_io_apic_init_mappings,
.read = native_io_apic_read,
.write = native_io_apic_write,
.modify = native_io_apic_modify,
.init = native_io_apic_init_mappings,
.read = native_io_apic_read,
.write = native_io_apic_write,
.modify = native_io_apic_modify,
.disable = native_disable_io_apic,
};