Re: [patch 3/4] x86: enable the intr-remap fault handling afterlocal apic setup

[Chris Wright]

* Suresh Siddha (suresh.b.siddha@xxxxxxxxx) wrote:
> From: Kenji Kaneshige <kaneshige.kenji@xxxxxxxxxxxxxx>
> Subject: x86: enable the intr-remap fault handling after local apic setup
> 
> Interrupt-remapping gets enabled very early in the boot, as it determines the
> apic mode that the processor can use. And the current code enables the vt-d
> fault handling before the setup_local_APIC(). And hence the APIC LDR registers
> and data structure in the memory may not be initialized. So the vt-d fault
> handling in logical xapic/x2apic modes were broken.
> 
> Fix this by enabling the vt-d fault handling in the end_local_APIC_setup()
> 
> A cleaner fix of enabling fault handling while enabling intr-remapping
> will be addressed for v2.6.38. [ Enabling intr-remapping determines the
> usage of x2apic mode and the apic mode determines the fault-handling
> configuration. ]
> 
> Signed-off-by: Kenji Kaneshige <kaneshige.kenji@xxxxxxxxxxxxxx>
> Signed-off-by: Suresh Siddha <suresh.b.siddha@xxxxxxxxx>

Acked-by: Chris Wright <chrisw@xxxxxxxxxxxx>
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