marcel 3704dfdebb Fix handling of external interrupts: we weren't calling ast() when ... interrupting user mode. The net effect of this bug is that a clock interrupt does not cause rescheduling and processes are not preempted. It only takes a "while (1);" to render the machine useless. This bug was introduced by the context changes and EPC syscall code. Handling of ASTs was moved to C for clarity and ease of maintenance, but was not added for the external interrupt case. This needs to be revisited. We now have calls to do_ast() in trap(), break_syscall() and ivt_External_Interrupt(). A single call in exception_restore covers these 3 places without duplication. This is where we handled ASTs prior to the overhaul, except that the meat has been moved to do_ast(), a C function. This was the goal to begin with. Pointy hat: marcel		2003-08-04 00:08:39 +00:00
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acpica	Don't hardcode the address of the local (S)APIC (aka processor	2003-01-05 22:14:30 +00:00
compile	Don't need the .keep_me files. Obrien and I committed past each other.	2001-07-01 23:35:44 +00:00
conf	Remove INVARIANT* and WITNESS. This makes the simulator much more	2003-07-25 07:52:20 +00:00
ia32	Revamp of the syscall path, exception and context handling. The	2003-05-16 21:26:42 +00:00
ia64	Fix handling of external interrupts: we weren't calling ast() when	2003-08-04 00:08:39 +00:00
include	Style sync.	2003-08-03 07:50:19 +00:00
isa	Mega busdma API commit.	2003-07-01 15:52:06 +00:00
pci	Delete legacy pcib code - we can't possibly work without acpi on ia64.	2001-10-06 10:09:57 +00:00