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[IA64] Need to handle lfetch in "no_context" case.

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Thanks to Mark for tracking down this one.  Users of __copy_from_user_inatomic()
will be sad if we don't handle lfetch faults for the "no_context" case.

Signed-off-by: Tony Luck <tony.luck@intel.com>
This commit is contained in:
Tony Luck 2005-04-25 13:22:44 -07:00
parent 0985ea8f2d
commit f0a8d3c9ec
1 changed files with 6 additions and 3 deletions
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9
arch/ia64/mm/fault.c
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@ -209,10 +209,13 @@ ia64_do_page_fault (unsigned long address, unsigned long isr, struct pt_regs *re
}
no_context:
if (isr & IA64_ISR_SP) {
if ((isr & IA64_ISR_SP)
|| ((isr & IA64_ISR_NA) && (isr & IA64_ISR_CODE_MASK) == IA64_ISR_CODE_LFETCH))
{
/*
* This fault was due to a speculative load set the "ed" bit in the psr to
* ensure forward progress (target register will get a NaT).
* This fault was due to a speculative load or lfetch.fault, set the "ed"
* bit in the psr to ensure forward progress. (Target register will get a
* NaT for ld.s, lfetch will be canceled.)
*/
ia64_psr(regs)->ed = 1;
return;