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| author | Thomas Huth <thuth@linux.vnet.ibm.com> | 2014-10-01 14:48:42 +0200 |
|---|---|---|
| committer | Christian Borntraeger <borntraeger@de.ibm.com> | 2014-10-28 13:08:59 +0100 |
| commit | a6b7e459ff6d569227980f711664f927100c73a8 (patch) | |
| tree | e453086ed69408f2573ad4470fc7fb5e401a309d /arch/s390/include/asm | |
| parent | Linux 3.18-rc2 (diff) | |
| download | linux-a6b7e459ff6d569227980f711664f927100c73a8.tar.xz linux-a6b7e459ff6d569227980f711664f927100c73a8.zip | |
KVM: s390: Make the simple ipte mutex specific to a VM instead of global
The ipte-locking should be done for each VM seperately, not globally.
This way we avoid possible congestions when the simple ipte-lock is used
and multiple VMs are running.
Suggested-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Acked-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Diffstat (limited to 'arch/s390/include/asm')
| -rw-r--r-- | arch/s390/include/asm/kvm_host.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/s390/include/asm/kvm_host.h b/arch/s390/include/asm/kvm_host.h index 2175f911a73a..584b820eeaf8 100644 --- a/arch/s390/include/asm/kvm_host.h +++ b/arch/s390/include/asm/kvm_host.h @@ -434,6 +434,8 @@ struct kvm_arch{ int user_cpu_state_ctrl; struct s390_io_adapter *adapters[MAX_S390_IO_ADAPTERS]; wait_queue_head_t ipte_wq; + int ipte_lock_count; + struct mutex ipte_mutex; spinlock_t start_stop_lock; struct kvm_s390_crypto crypto; }; |