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authorHeiko Carstens <heiko.carstens@de.ibm.com>2014-01-01 16:08:37 +0100
committerChristian Borntraeger <borntraeger@de.ibm.com>2014-04-22 13:24:36 +0200
commit5f4e87a227757198f4cf0495f7fd6c47a28aacb6 (patch)
treeca4f365481dc75887659a6ae248c8b131de64a97 /arch/s390/include/asm/ctl_reg.h
parent1365632bdeb42e5e252566bb08c0d7d68640edd3 (diff)
s390/ctl_reg: add union type for control register 0
Add 'union ctlreg0_bits' to easily allow setting and testing bits of control register 0 bits. This patch only adds the bits needed for the new guest access functions. Other bits and control registers can be added when needed. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Reviewed-by: Thomas Huth <thuth@linux.vnet.ibm.com> Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Diffstat (limited to 'arch/s390/include/asm/ctl_reg.h')
-rw-r--r--arch/s390/include/asm/ctl_reg.h14
1 files changed, 14 insertions, 0 deletions
diff --git a/arch/s390/include/asm/ctl_reg.h b/arch/s390/include/asm/ctl_reg.h
index 4e63f1a13600..31ab9f346d7e 100644
--- a/arch/s390/include/asm/ctl_reg.h
+++ b/arch/s390/include/asm/ctl_reg.h
@@ -57,6 +57,20 @@ static inline void __ctl_clear_bit(unsigned int cr, unsigned int bit)
void smp_ctl_set_bit(int cr, int bit);
void smp_ctl_clear_bit(int cr, int bit);
+union ctlreg0 {
+ unsigned long val;
+ struct {
+#ifdef CONFIG_64BIT
+ unsigned long : 32;
+#endif
+ unsigned long : 3;
+ unsigned long lap : 1; /* Low-address-protection control */
+ unsigned long : 4;
+ unsigned long edat : 1; /* Enhanced-DAT-enablement control */
+ unsigned long : 23;
+ };
+};
+
#ifdef CONFIG_SMP
# define ctl_set_bit(cr, bit) smp_ctl_set_bit(cr, bit)
# define ctl_clear_bit(cr, bit) smp_ctl_clear_bit(cr, bit)

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