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authorEkaterina Tumanova <tumanova@linux.vnet.ibm.com>2015-01-30 16:55:56 +0100
committerChristian Borntraeger <borntraeger@de.ibm.com>2015-03-17 16:26:51 +0100
commite44fc8c9dab215ac0e398622a05574cffd5f5184 (patch)
treed452385decc56c0e01927738d78fda73d0cd813b /arch/s390/include
parentKVM: s390: Add MEMOP ioctls for reading/writing guest memory (diff)
downloadlinux-e44fc8c9dab215ac0e398622a05574cffd5f5184.tar.xz
linux-e44fc8c9dab215ac0e398622a05574cffd5f5184.zip
KVM: s390: introduce post handlers for STSI
The Store System Information (STSI) instruction currently collects all information it relays to the caller in the kernel. Some information, however, is only available in user space. An example of this is the guest name: The kernel always sets "KVMGuest", but user space knows the actual guest name. This patch introduces a new exit, KVM_EXIT_S390_STSI, guarded by a capability that can be enabled by user space if it wants to be able to insert such data. User space will be provided with the target buffer and the requested STSI function code. Reviewed-by: Eric Farman <farman@linux.vnet.ibm.com> Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Ekaterina Tumanova <tumanova@linux.vnet.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Diffstat (limited to 'arch/s390/include')
-rw-r--r--arch/s390/include/asm/kvm_host.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/s390/include/asm/kvm_host.h b/arch/s390/include/asm/kvm_host.h
index 347a3333d618..2356a8c660b3 100644
--- a/arch/s390/include/asm/kvm_host.h
+++ b/arch/s390/include/asm/kvm_host.h
@@ -565,6 +565,7 @@ struct kvm_arch{
int use_vectors;
int user_cpu_state_ctrl;
int user_sigp;
+ int user_stsi;
struct s390_io_adapter *adapters[MAX_S390_IO_ADAPTERS];
wait_queue_head_t ipte_wq;
int ipte_lock_count;