Commit 9b3cbf72 authored Aug 04, 2008 by Isaku Yamahata Committed by Tony Luck Aug 04, 2008

[IA64] pv_ops: fix ivt.S paravirtualization



Recent kernels are not booting on some HP systems (though
it does boot on others). James and Willy reported the
problem.  James did the bisection to find the commit
that caused the problem:
	498c5170.
	[IA64] pvops: paravirtualize ivt.S

Two instructions were wrongly paravirtualized such that
_FROM_ macro had been used where _TO_ was intended

Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Cc: "Wilcox, Matthew  R" <matthew.r.wilcox@intel.com>
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Tony Luck <tony.luck@intel.com>

parent 8f616cd5

arch/ia64/kernel/ivt.S

+2 −2

Original line number	Diff line number	Diff line
		@@ -1243,11 +1243,11 @@ ENTRY(speculation_vector)

		add r17=r17,r18 // now add the offset
		;;
		MOV_FROM_IIP(r17)
		MOV_TO_IIP(r17, r19)
		dep r16=0,r16,41,2 // clear EI
		;;

		MOV_FROM_IPSR(p0, r16)
		MOV_TO_IPSR(p0, r16, r19)
		;;

		RFI

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