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authorHeiko Carstens <heiko.carstens@de.ibm.com>2010-02-26 22:37:43 +0100
committerMartin Schwidefsky <sky@mschwide.boeblingen.de.ibm.com>2010-02-26 22:37:31 +0100
commitcbb870c8221147ae337612e04b2bb0211f31a74b (patch)
treeaa0c80fde4a271d8a366afc76912c5dacdb7542a /drivers/s390/kvm
parentd96221ab1e7d86dc0d4666466979117cd1915386 (diff)
downloadlinux-cbb870c8221147ae337612e04b2bb0211f31a74b.tar.bz2
[S390] Cleanup struct _lowcore usage and defines.
Use asm offsets to make sure the offset defines to struct _lowcore and its layout don't get out of sync. Also add a BUILD_BUG_ON() which checks that the size of the structure is sane. And while being at it change those sites which use odd casts to access the current lowcore. These should use S390_lowcore instead. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390/kvm')
-rw-r--r--drivers/s390/kvm/kvm_virtio.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/s390/kvm/kvm_virtio.c b/drivers/s390/kvm/kvm_virtio.c
index 2930fc763ac5..b2fc4fd63f7f 100644
--- a/drivers/s390/kvm/kvm_virtio.c
+++ b/drivers/s390/kvm/kvm_virtio.c
@@ -340,11 +340,11 @@ static void kvm_extint_handler(u16 code)
return;
/* The LSB might be overloaded, we have to mask it */
- vq = (struct virtqueue *) ((*(long *) __LC_PFAULT_INTPARM) & ~1UL);
+ vq = (struct virtqueue *)(S390_lowcore.ext_params2 & ~1UL);
/* We use the LSB of extparam, to decide, if this interrupt is a config
* change or a "standard" interrupt */
- config_changed = (*(int *) __LC_EXT_PARAMS & 1);
+ config_changed = S390_lowcore.ext_params & 1;
if (config_changed) {
struct virtio_driver *drv;