diff options
| author |   Eugene (jno) Dvurechenski <jno@linux.vnet.ibm.com> | 2015-04-22 18:08:39 +0200 |
|---|---|---|
| committer |   Christian Borntraeger <borntraeger@de.ibm.com> | 2015-11-30 12:47:08 +0100 |
| commit | 5e0443152367ab9fef597a41a4e09a32df2bf887 (patch) | |
| tree | 143843125470e817394a2854c380baf9030c56e8 /arch/s390/include/asm/kvm_host.h | |
| parent | KVM: s390: Make provisions for ESCA utilization (diff) | |
| download | linux-dev-5e0443152367ab9fef597a41a4e09a32df2bf887.tar.xz linux-dev-5e0443152367ab9fef597a41a4e09a32df2bf887.zip | |
KVM: s390: Introduce switching code
This patch adds code that performs transparent switch to Extended
SCA on addition of 65th VCPU in a VM. Disposal of ESCA is added too.
The entier ESCA functionality, however, is still not enabled.
The enablement will be provided in a separate patch.
This patch also uses read/write lock protection of SCA and its subfields for
possible disposal at the BSCA-to-ESCA transition. While only Basic SCA needs such
a protection (for the swap), any SCA access is now guarded.
Signed-off-by: Eugene (jno) Dvurechenski <jno@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Diffstat (limited to 'arch/s390/include/asm/kvm_host.h')
| -rw-r--r-- | arch/s390/include/asm/kvm_host.h | 1 |
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 25fdbf808693..86c33863a0ad 100644 --- a/arch/s390/include/asm/kvm_host.h +++ b/arch/s390/include/asm/kvm_host.h @@ -622,6 +622,7 @@ struct kvm_s390_crypto_cb { struct kvm_arch{ void *sca; int use_esca; + rwlock_t sca_lock; debug_info_t *dbf; struct kvm_s390_float_interrupt float_int; struct kvm_device *flic; |