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authorMichael Holzheu <holzheu@linux.vnet.ibm.com>2011-10-30 15:16:40 +0100
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2011-10-30 15:16:42 +0100
commit60a0c68df2632feaa4a986af084650d1165d89c5 (patch)
treef55907defeab43de02a5a3127c8d5a694a21b3a2 /arch/s390/kernel/base.S
parent7f0bf656c66e4292e965c95fd9de55c72b6578bb (diff)
downloadlinux-60a0c68df2632feaa4a986af084650d1165d89c5.tar.bz2
[S390] kdump backend code
This patch provides the architecture specific part of the s390 kdump support. Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/kernel/base.S')
-rw-r--r--arch/s390/kernel/base.S6
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/s390/kernel/base.S b/arch/s390/kernel/base.S
index 255435663bf8..f8828d38fa6e 100644
--- a/arch/s390/kernel/base.S
+++ b/arch/s390/kernel/base.S
@@ -86,6 +86,8 @@ s390_base_pgm_handler_fn:
ENTRY(diag308_reset)
larl %r4,.Lctlregs # Save control registers
stctg %c0,%c15,0(%r4)
+ larl %r4,.Lfpctl # Floating point control register
+ stfpc 0(%r4)
larl %r4,.Lrestart_psw # Setup restart PSW at absolute 0
lghi %r3,0
lg %r4,0(%r4) # Save PSW
@@ -99,6 +101,8 @@ ENTRY(diag308_reset)
sam64 # Switch to 64 bit addressing mode
larl %r4,.Lctlregs # Restore control registers
lctlg %c0,%c15,0(%r4)
+ larl %r4,.Lfpctl # Restore floating point ctl register
+ lfpc 0(%r4)
br %r14
.align 16
.Lrestart_psw:
@@ -110,6 +114,8 @@ ENTRY(diag308_reset)
.rept 16
.quad 0
.endr
+.Lfpctl:
+ .long 0
.previous
#else /* CONFIG_64BIT */