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arch/tile: parameterize system PLs to support KVM port

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While not a port to KVM (yet), this change modifies the kernel
to be able to build either at PL1 or at PL2 with a suitable
config switch.  Pushing up this change avoids handling branch
merge issues going forward with the KVM work.

Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
This commit is contained in:
Chris Metcalf
2010-10-14 16:23:03 -04:00
parent bf65e440e8
commit a78c942df6
23 changed files with 337 additions and 131 deletions
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arch/tile/kernel/traps.c
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@@ -278,7 +278,7 @@ void __kprobes do_trap(struct pt_regs *regs, int fault_num,
case INT_DOUBLE_FAULT:
/*
* For double fault, "reason" is actually passed as
* SYSTEM_SAVE_1_2, the hypervisor's double-fault info, so
* SYSTEM_SAVE_K_2, the hypervisor's double-fault info, so
* we can provide the original fault number rather than
* the uninteresting "INT_DOUBLE_FAULT" so the user can
* learn what actually struck while PL0 ICS was set.