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KVM: s390: use facilities and cpu_id per KVM

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The patch introduces facilities and cpu_ids per virtual machine.
Different virtual machines may want to expose different facilities and
cpu ids to the guest, so let's make them per-vm instead of global.

Signed-off-by: Michael Mueller <mimu@linux.vnet.ibm.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
This commit is contained in:
Michael Mueller
2015-02-02 15:42:51 +01:00
committed by Christian Borntraeger
parent 45c9b47c58
commit 9d8d578605
5 changed files with 99 additions and 44 deletions
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13
arch/s390/kvm/kvm-s390.h
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@@ -18,12 +18,10 @@
#include <linux/hrtimer.h>
#include <linux/kvm.h>
#include <linux/kvm_host.h>
#include <asm/facility.h>
typedef int (*intercept_handler_t)(struct kvm_vcpu *vcpu);
/* declare vfacilities extern */
extern unsigned long *vfacilities;
/* Transactional Memory Execution related macros */
#define IS_TE_ENABLED(vcpu) ((vcpu->arch.sie_block->ecb & 0x10))
#define TDB_FORMAT1 1
@@ -127,6 +125,12 @@ static inline void kvm_s390_set_psw_cc(struct kvm_vcpu *vcpu, unsigned long cc)
vcpu->arch.sie_block->gpsw.mask |= cc << 44;
}
/* test availability of facility in a kvm intance */
static inline int test_kvm_facility(struct kvm *kvm, unsigned long nr)
{
return __test_facility(nr, kvm->arch.model.fac->kvm);
}
/* are cpu states controlled by user space */
static inline int kvm_s390_user_cpu_state_ctrl(struct kvm *kvm)
{
@@ -183,7 +187,8 @@ int kvm_s390_vcpu_setup_cmma(struct kvm_vcpu *vcpu);
void kvm_s390_vcpu_unsetup_cmma(struct kvm_vcpu *vcpu);
/* is cmma enabled */
bool kvm_s390_cmma_enabled(struct kvm *kvm);
int test_vfacility(unsigned long nr);
unsigned long kvm_s390_fac_list_mask_size(void);
extern unsigned long kvm_s390_fac_list_mask[];
/* implemented in diag.c */
int kvm_s390_handle_diag(struct kvm_vcpu *vcpu);