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Commit 2a2d7bef authored by Vasily Gorbik's avatar Vasily Gorbik Committed by Martin Schwidefsky
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s390/nmi: avoid using long-displacement facility 



__LC_MCESAD is currently 4528 /* offsetof(struct lowcore, mcesad) */
that would require long-displacement facility for lg, which we don't
have on z900.

Fixes: 3037a52f ("s390/nmi: do register validation as early as possible")
Signed-off-by: default avatarVasily Gorbik <gor@linux.vnet.ibm.com>
Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
parent 3b42c17a

arch/s390/kernel/entry.S

+1 −1
Original line number Diff line number Diff line
@@ -964,7 +964,7 @@ ENTRY(mcck_int_handler) 
	la	%r14,4095

	lctlg	%c0,%c15,__LC_CREGS_SAVE_AREA-4095(%r14) # validate ctl regs

	ptlb

	lg	%r11,__LC_MCESAD	# extended machine check save area

	lg	%r11,__LC_MCESAD-4095(%r14) # extended machine check save area

	nill	%r11,0xfc00		# MCESA_ORIGIN_MASK

	TSTMSK	__LC_CREGS_SAVE_AREA+16-4095(%r14),CR2_GUARDED_STORAGE

	jno	0f