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authorRusty Russell <rusty@rustcorp.com.au>2008-12-30 09:26:02 -0600
committerRusty Russell <rusty@rustcorp.com.au>2008-12-30 09:26:03 +1030
commitdb40598863e8cbbd11053ad3c8bae89000f603f9 (patch)
tree47c61f5d8c3f031ef7f45f108e70d3785112037c /arch
parent2966af73e70dee461c256b5eb877b2ff757f8c82 (diff)
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op-kernel-dev-db40598863e8cbbd11053ad3c8bae89000f603f9.tar.gz
virtio: use KVM_S390_VIRTIO_RING_ALIGN instead of relying on pagesize
This doesn't really matter, since s390 pagesize is 4k anyway. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Diffstat (limited to 'arch')
-rw-r--r--arch/s390/include/asm/kvm_virtio.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/s390/include/asm/kvm_virtio.h b/arch/s390/include/asm/kvm_virtio.h
index c13568b..0503936 100644
--- a/arch/s390/include/asm/kvm_virtio.h
+++ b/arch/s390/include/asm/kvm_virtio.h
@@ -50,6 +50,10 @@ struct kvm_vqconfig {
#define KVM_S390_VIRTIO_RESET 1
#define KVM_S390_VIRTIO_SET_STATUS 2
+/* The alignment to use between consumer and producer parts of vring.
+ * This is pagesize for historical reasons. */
+#define KVM_S390_VIRTIO_RING_ALIGN 4096
+
#ifdef __KERNEL__
/* early virtio console setup */
#ifdef CONFIG_S390_GUEST
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