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tile: fix "odd fault" warning for stack backtraces

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We were setting ex1 in new kernel threads to KERNEL_PL.
But since we just do a simple context-switch, not an iret,
any value set here is ignored anyway, and its presence causes
stack backtraces to end with a warning about an "odd fault".

Signed-off-by: Chris Metcalf <cmetcalf@ezchip.com>
This commit is contained in:
Chris Metcalf 2015-05-07 14:34:59 -04:00
parent 9a5d2cbe6a
commit e8200baa2f
1 changed files with 0 additions and 1 deletions
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arch/tile/kernel/process.c
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@ -133,7 +133,6 @@ int copy_thread(unsigned long clone_flags, unsigned long sp,
(CALLEE_SAVED_REGS_COUNT - 2) * sizeof(unsigned long));
callee_regs[0] = sp; /* r30 = function */
callee_regs[1] = arg; /* r31 = arg */
childregs->ex1 = PL_ICS_EX1(KERNEL_PL, 0);
p->thread.pc = (unsigned long) ret_from_kernel_thread;
return 0;
}