A-Team_Digital_Solutions/android_kernel_motorola_sm6375
Watch
2
0
Fork
You've already forked android_kernel_motorola_sm6375
 0
mirror of https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git synced 2026-10-28 01:33:00 -04:00
Code Issues Projects Releases Packages Wiki Activity

KVM: s390: do not set intervention requests for GISA interrupts

Browse source 
If GISA is available, we do not have to kick CPUs out of SIE to deliver
interrupts. The hardware can deliver such interrupts while running.

Cc: Michael Mueller <[email protected]>
Reviewed-by: David Hildenbrand <[email protected]>
Reviewed-by: Cornelia Huck <[email protected]>
Signed-off-by: Christian Borntraeger <[email protected]>
This commit is contained in:
Christian Borntraeger 2018-02-12 12:33:39 +00:00
commit 8846f3175c
1 changed files with 8 additions and 3 deletions
Download patch file Download diff file Expand all files Collapse all files

11
arch/s390/kvm/interrupt.c
View file

@ -236,10 +236,15 @@ static inline int kvm_s390_gisa_tac_ipm_gisc(struct kvm_s390_gisa *gisa, u32 gis
return test_and_clear_bit_inv(IPM_BIT_OFFSET + gisc, (unsigned long *) gisa);
}
static inline unsigned long pending_irqs(struct kvm_vcpu *vcpu)
static inline unsigned long pending_irqs_no_gisa(struct kvm_vcpu *vcpu)
{
return vcpu->kvm->arch.float_int.pending_irqs |
vcpu->arch.local_int.pending_irqs |
vcpu->arch.local_int.pending_irqs;
}
static inline unsigned long pending_irqs(struct kvm_vcpu *vcpu)
{
return pending_irqs_no_gisa(vcpu) |
kvm_s390_gisa_get_ipm(vcpu->kvm->arch.gisa) << IRQ_PEND_IO_ISC_7;
}
@ -337,7 +342,7 @@ static void __reset_intercept_indicators(struct kvm_vcpu *vcpu)
static void set_intercept_indicators_io(struct kvm_vcpu *vcpu)
{
if (!(pending_irqs(vcpu) & IRQ_PEND_IO_MASK))
if (!(pending_irqs_no_gisa(vcpu) & IRQ_PEND_IO_MASK))
return;
else if (psw_ioint_disabled(vcpu))
kvm_s390_set_cpuflags(vcpu, CPUSTAT_IO_INT);