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| author | Heiko Carstens <heiko.carstens@de.ibm.com> | 2014-01-01 16:08:37 +0100 |
|---|---|---|
| committer | Christian Borntraeger <borntraeger@de.ibm.com> | 2014-04-22 13:24:36 +0200 |
| commit | 5f4e87a227757198f4cf0495f7fd6c47a28aacb6 (patch) | |
| tree | ca4f365481dc75887659a6ae248c8b131de64a97 | |
| parent | 1365632bdeb42e5e252566bb08c0d7d68640edd3 (diff) | |
| download | linux-5f4e87a227757198f4cf0495f7fd6c47a28aacb6.tar.gz | |
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>
| -rw-r--r-- | arch/s390/include/asm/ctl_reg.h | 14 |
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) |