From f0a8d3c9ec1f82d2a41faa6c46b8db7bd5b1eb8d Mon Sep 17 00:00:00 2001 From: Tony Luck Date: Mon, 25 Apr 2005 13:22:44 -0700 Subject: [PATCH] [IA64] Need to handle lfetch in "no_context" case. 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 --- arch/ia64/mm/fault.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/arch/ia64/mm/fault.c b/arch/ia64/mm/fault.c index da859125aae..4174ec999dd 100644 --- a/arch/ia64/mm/fault.c +++ b/arch/ia64/mm/fault.c @@ -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; -- 2.41.0