KVM: s390: some ext irqs have to clear the ext cpu addr
The cpu address of a source cpu (responsible for an external irq) is only to be stored if bit 6 of the ext irq code is set. If bit 6 is not set, it is to be zeroed out. The special external irq code used for virtio and pfault uses the cpu addr as a parameter field. As bit 6 is set, this implementation is correct. Reviewed-by: Thomas Huth <thuth@linux.vnet.ibm.com> Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
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1 changed files with 3 additions and 0 deletions
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@ -281,6 +281,7 @@ static int __must_check __deliver_cpu_timer(struct kvm_vcpu *vcpu)
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rc = put_guest_lc(vcpu, EXT_IRQ_CPU_TIMER,
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rc = put_guest_lc(vcpu, EXT_IRQ_CPU_TIMER,
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(u16 *)__LC_EXT_INT_CODE);
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(u16 *)__LC_EXT_INT_CODE);
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rc |= put_guest_lc(vcpu, 0, (u16 *)__LC_EXT_CPU_ADDR);
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rc |= write_guest_lc(vcpu, __LC_EXT_OLD_PSW,
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rc |= write_guest_lc(vcpu, __LC_EXT_OLD_PSW,
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&vcpu->arch.sie_block->gpsw, sizeof(psw_t));
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&vcpu->arch.sie_block->gpsw, sizeof(psw_t));
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rc |= read_guest_lc(vcpu, __LC_EXT_NEW_PSW,
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rc |= read_guest_lc(vcpu, __LC_EXT_NEW_PSW,
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@ -299,6 +300,7 @@ static int __must_check __deliver_ckc(struct kvm_vcpu *vcpu)
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rc = put_guest_lc(vcpu, EXT_IRQ_CLK_COMP,
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rc = put_guest_lc(vcpu, EXT_IRQ_CLK_COMP,
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(u16 __user *)__LC_EXT_INT_CODE);
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(u16 __user *)__LC_EXT_INT_CODE);
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rc |= put_guest_lc(vcpu, 0, (u16 *)__LC_EXT_CPU_ADDR);
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rc |= write_guest_lc(vcpu, __LC_EXT_OLD_PSW,
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rc |= write_guest_lc(vcpu, __LC_EXT_OLD_PSW,
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&vcpu->arch.sie_block->gpsw, sizeof(psw_t));
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&vcpu->arch.sie_block->gpsw, sizeof(psw_t));
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rc |= read_guest_lc(vcpu, __LC_EXT_NEW_PSW,
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rc |= read_guest_lc(vcpu, __LC_EXT_NEW_PSW,
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@ -585,6 +587,7 @@ static int __must_check __deliver_service(struct kvm_vcpu *vcpu,
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inti->ext.ext_params, 0);
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inti->ext.ext_params, 0);
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rc = put_guest_lc(vcpu, EXT_IRQ_SERVICE_SIG, (u16 *)__LC_EXT_INT_CODE);
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rc = put_guest_lc(vcpu, EXT_IRQ_SERVICE_SIG, (u16 *)__LC_EXT_INT_CODE);
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rc |= put_guest_lc(vcpu, 0, (u16 *)__LC_EXT_CPU_ADDR);
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rc |= write_guest_lc(vcpu, __LC_EXT_OLD_PSW,
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rc |= write_guest_lc(vcpu, __LC_EXT_OLD_PSW,
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&vcpu->arch.sie_block->gpsw, sizeof(psw_t));
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&vcpu->arch.sie_block->gpsw, sizeof(psw_t));
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rc |= read_guest_lc(vcpu, __LC_EXT_NEW_PSW,
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rc |= read_guest_lc(vcpu, __LC_EXT_NEW_PSW,
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