summaryrefslogtreecommitdiffstats
path: root/include/uapi/linux/kvm.h
diff options
context:
space:
mode:
authorKen Hofsass2018-02-01 01:03:35 +0100
committerRadim Krčmář2018-03-06 18:40:43 +0100
commit7b7e39522a61f402d41dd9a67f3fa2133ef9d4e8 (patch)
tree2416acd62546483498495af33f6561ed00986b87 /include/uapi/linux/kvm.h
parentkvm: x86: hyperv: guest->host event signaling via eventfd (diff)
downloadkernel-qcow2-linux-7b7e39522a61f402d41dd9a67f3fa2133ef9d4e8.tar.gz
kernel-qcow2-linux-7b7e39522a61f402d41dd9a67f3fa2133ef9d4e8.tar.xz
kernel-qcow2-linux-7b7e39522a61f402d41dd9a67f3fa2133ef9d4e8.zip
KVM: x86: add SYNC_REGS_SIZE_BYTES #define.
Replace hardcoded padding size value for struct kvm_sync_regs with #define SYNC_REGS_SIZE_BYTES. Also update the value specified in api.txt from outdated hardcoded value to SYNC_REGS_SIZE_BYTES. Signed-off-by: Ken Hofsass <hofsass@google.com> Reviewed-by: David Hildenbrand <david@redhat.com> Acked-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
Diffstat (limited to 'include/uapi/linux/kvm.h')
-rw-r--r--include/uapi/linux/kvm.h6
1 files changed, 5 insertions, 1 deletions
diff --git a/include/uapi/linux/kvm.h b/include/uapi/linux/kvm.h
index 2d2d926113ba..088c2c92db55 100644
--- a/include/uapi/linux/kvm.h
+++ b/include/uapi/linux/kvm.h
@@ -396,6 +396,10 @@ struct kvm_run {
char padding[256];
};
+ /* 2048 is the size of the char array used to bound/pad the size
+ * of the union that holds sync regs.
+ */
+ #define SYNC_REGS_SIZE_BYTES 2048
/*
* shared registers between kvm and userspace.
* kvm_valid_regs specifies the register classes set by the host
@@ -407,7 +411,7 @@ struct kvm_run {
__u64 kvm_dirty_regs;
union {
struct kvm_sync_regs regs;
- char padding[2048];
+ char padding[SYNC_REGS_SIZE_BYTES];
} s;
};