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KVM: s390: make use of ipte lock

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Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Reviewed-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
This commit is contained in:
Heiko Carstens
2014-01-10 14:33:28 +01:00
committed by Christian Borntraeger
parent 217a440683
commit 8a242234b4
5 changed files with 142 additions and 1 deletions
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18
arch/s390/kvm/priv.c
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@@ -173,6 +173,19 @@ static int handle_skey(struct kvm_vcpu *vcpu)
return 0;
}
static int handle_ipte_interlock(struct kvm_vcpu *vcpu)
{
psw_t *psw = &vcpu->arch.sie_block->gpsw;
vcpu->stat.instruction_ipte_interlock++;
if (psw_bits(*psw).p)
return kvm_s390_inject_program_int(vcpu, PGM_PRIVILEGED_OP);
wait_event(vcpu->kvm->arch.ipte_wq, !ipte_lock_held(vcpu));
psw->addr = __rewind_psw(*psw, 4);
VCPU_EVENT(vcpu, 4, "%s", "retrying ipte interlock operation");
return 0;
}
static int handle_test_block(struct kvm_vcpu *vcpu)
{
unsigned long hva;
@@ -509,6 +522,7 @@ static const intercept_handler_t b2_handlers[256] = {
[0x10] = handle_set_prefix,
[0x11] = handle_store_prefix,
[0x12] = handle_store_cpu_address,
[0x21] = handle_ipte_interlock,
[0x29] = handle_skey,
[0x2a] = handle_skey,
[0x2b] = handle_skey,
@@ -526,6 +540,7 @@ static const intercept_handler_t b2_handlers[256] = {
[0x3a] = handle_io_inst,
[0x3b] = handle_io_inst,
[0x3c] = handle_io_inst,
[0x50] = handle_ipte_interlock,
[0x5f] = handle_io_inst,
[0x74] = handle_io_inst,
[0x76] = handle_io_inst,
@@ -686,7 +701,10 @@ static int handle_essa(struct kvm_vcpu *vcpu)
}
static const intercept_handler_t b9_handlers[256] = {
[0x8a] = handle_ipte_interlock,
[0x8d] = handle_epsw,
[0x8e] = handle_ipte_interlock,
[0x8f] = handle_ipte_interlock,
[0xab] = handle_essa,
[0xaf] = handle_pfmf,
};