freebsd-nq/sys/alpha
John Baldwin 0f98ef505a In exception_return(), test for usermode before testing the IPL to see if
we should call ast().  This allows us to branch to a separate Lkernelret
label so we can fixup the saved t7 register in the trapframe.  Otherwise
we can run into a problem on SMP systems where a process is interrupted by
a trap or interrupt on one CPU, migrates to another CPU, and then returns
with the t7 in the stack clobbering the CPU's t7.  As a result, two CPU's
would both point to the same per-CPU data and things would go downhill from
there.

Sleuthing help by:	gallatin
2001-04-17 02:44:35 +00:00
..
alpha In exception_return(), test for usermode before testing the IPL to see if 2001-04-17 02:44:35 +00:00
conf Turn on kernel debugging support (DDB, INVARIANTS, INVARIANT_SUPPORT, WITNESS) 2001-04-15 19:37:28 +00:00
include Rename the IPI API from smp_ipi_* to ipi_* since the smp_ prefix is just 2001-04-11 17:06:02 +00:00
isa Use the MI ithread helper functions in the alpha hardware interrupt code. 2001-02-09 17:53:23 +00:00
linux Regen after adding linux_sched_get_priority_max() and 2001-04-03 18:01:41 +00:00
mcbus Doug found that doing a W1C on MCPCIA_INT_REQ just around the time you 2001-02-13 22:48:12 +00:00
osf1 Grab the process lock while calling psignal and before calling psignal. 2001-03-07 03:37:06 +00:00
pci Switch from save/disable/restore_intr() to critical_enter/exit(). 2001-03-28 03:06:10 +00:00
tc Another round of the <sys/queue.h> FOREACH transmogriffer. 2001-02-04 16:08:18 +00:00
tlsb Send the remains (such as I have located) of "block major numbers" to 2001-03-26 12:41:29 +00:00
Makefile Add a dopey makefile to do the tags dance, which is probably not perfect 2000-12-31 23:26:34 +00:00