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Commit 9db8c050 authored by Michael Holzheu's avatar Michael Holzheu Committed by Martin Schwidefsky
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s390/kdump: Use 64 bit mode for 0x10000 entry point 



The 0x10000 entry point can be called in z/Arch architecture and 64 bit
addressing mode. Therefore this patch removes the unnecessary 31 bit
switch code from the kdump startup function.

Signed-off-by: default avatarMichael Holzheu <holzheu@linux.vnet.ibm.com>
Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
parent f47586b2

arch/s390/kernel/head_kdump.S

+2 −8
Original line number Diff line number Diff line
@@ -85,16 +85,10 @@ 
.align 2

startup_kdump_relocated:

	basr	%r13,0

0:

	mvc	0(8,%r0),.Lrestart_psw-0b(%r13)	# Setup restart PSW

	sam31					# Switch to 31 bit addr mode

	sr	%r1,%r1				# Erase register r1

	sr	%r2,%r2				# Erase register r2

	sigp	%r1,%r2,SIGP_SET_ARCHITECTURE	# Switch to 31 bit arch mode

	lpsw	0				# Start new kernel...

0:	lpswe	.Lrestart_psw-0b(%r13)		# Start new kernel...

.align	8

.Lrestart_psw:

	.long	0x00080000,0x80000000 + startup

	.quad	0x0000000080000000,0x0000000000000000 + startup

#else

.align 2

.Lep_startup_kdump: