Merge tag 'iwlwifi-next-for-kalle-2014-12-30' of https://git.kernel.org/pub/scm/linux...

[cascardo/linux.git] / arch / s390 / kvm / interrupt.c

diff --git a/arch/s390/kvm/interrupt.c b/arch/s390/kvm/interrupt.c
index 1aa7f28..f00f31e 100644 (file)
--- a/arch/s390/kvm/interrupt.c
+++ b/arch/s390/kvm/interrupt.c
@@ -281,12 +281,13 @@ static int __must_check __deliver_cpu_timer(struct kvm_vcpu *vcpu)
 
        rc  = put_guest_lc(vcpu, EXT_IRQ_CPU_TIMER,
                           (u16 *)__LC_EXT_INT_CODE);
+       rc |= put_guest_lc(vcpu, 0, (u16 *)__LC_EXT_CPU_ADDR);
        rc |= write_guest_lc(vcpu, __LC_EXT_OLD_PSW,
                             &vcpu->arch.sie_block->gpsw, sizeof(psw_t));
        rc |= read_guest_lc(vcpu, __LC_EXT_NEW_PSW,
                            &vcpu->arch.sie_block->gpsw, sizeof(psw_t));
        clear_bit(IRQ_PEND_EXT_CPU_TIMER, &li->pending_irqs);
-       return rc;
+       return rc ? -EFAULT : 0;
 }
 
 static int __must_check __deliver_ckc(struct kvm_vcpu *vcpu)
@@ -299,12 +300,13 @@ static int __must_check __deliver_ckc(struct kvm_vcpu *vcpu)
 
        rc  = put_guest_lc(vcpu, EXT_IRQ_CLK_COMP,
                           (u16 __user *)__LC_EXT_INT_CODE);
+       rc |= put_guest_lc(vcpu, 0, (u16 *)__LC_EXT_CPU_ADDR);
        rc |= write_guest_lc(vcpu, __LC_EXT_OLD_PSW,
                             &vcpu->arch.sie_block->gpsw, sizeof(psw_t));
        rc |= read_guest_lc(vcpu, __LC_EXT_NEW_PSW,
                            &vcpu->arch.sie_block->gpsw, sizeof(psw_t));
        clear_bit(IRQ_PEND_EXT_CLOCK_COMP, &li->pending_irqs);
-       return rc;
+       return rc ? -EFAULT : 0;
 }
 
 static int __must_check __deliver_pfault_init(struct kvm_vcpu *vcpu)
@@ -332,7 +334,7 @@ static int __must_check __deliver_pfault_init(struct kvm_vcpu *vcpu)
        rc |= read_guest_lc(vcpu, __LC_EXT_NEW_PSW,
                            &vcpu->arch.sie_block->gpsw, sizeof(psw_t));
        rc |= put_guest_lc(vcpu, ext.ext_params2, (u64 *) __LC_EXT_PARAMS2);
-       return rc;
+       return rc ? -EFAULT : 0;
 }
 
 static int __must_check __deliver_machine_check(struct kvm_vcpu *vcpu)
@@ -369,7 +371,7 @@ static int __must_check __deliver_machine_check(struct kvm_vcpu *vcpu)
                             &vcpu->arch.sie_block->gpsw, sizeof(psw_t));
        rc |= read_guest_lc(vcpu, __LC_MCK_NEW_PSW,
                            &vcpu->arch.sie_block->gpsw, sizeof(psw_t));
-       return rc;
+       return rc ? -EFAULT : 0;
 }
 
 static int __must_check __deliver_restart(struct kvm_vcpu *vcpu)
@@ -387,7 +389,7 @@ static int __must_check __deliver_restart(struct kvm_vcpu *vcpu)
        rc |= read_guest_lc(vcpu, offsetof(struct _lowcore, restart_psw),
                            &vcpu->arch.sie_block->gpsw, sizeof(psw_t));
        clear_bit(IRQ_PEND_RESTART, &li->pending_irqs);
-       return rc;
+       return rc ? -EFAULT : 0;
 }
 
 static int __must_check __deliver_stop(struct kvm_vcpu *vcpu)
@@ -448,7 +450,7 @@ static int __must_check __deliver_emergency_signal(struct kvm_vcpu *vcpu)
                             &vcpu->arch.sie_block->gpsw, sizeof(psw_t));
        rc |= read_guest_lc(vcpu, __LC_EXT_NEW_PSW,
                            &vcpu->arch.sie_block->gpsw, sizeof(psw_t));
-       return rc;
+       return rc ? -EFAULT : 0;
 }
 
 static int __must_check __deliver_external_call(struct kvm_vcpu *vcpu)
@@ -476,7 +478,7 @@ static int __must_check __deliver_external_call(struct kvm_vcpu *vcpu)
                             &vcpu->arch.sie_block->gpsw, sizeof(psw_t));
        rc |= read_guest_lc(vcpu, __LC_EXT_NEW_PSW, &vcpu->arch.sie_block->gpsw,
                            sizeof(psw_t));
-       return rc;
+       return rc ? -EFAULT : 0;
 }
 
 static int __must_check __deliver_prog(struct kvm_vcpu *vcpu)
@@ -570,7 +572,7 @@ static int __must_check __deliver_prog(struct kvm_vcpu *vcpu)
                             &vcpu->arch.sie_block->gpsw, sizeof(psw_t));
        rc |= read_guest_lc(vcpu, __LC_PGM_NEW_PSW,
                            &vcpu->arch.sie_block->gpsw, sizeof(psw_t));
-       return rc;
+       return rc ? -EFAULT : 0;
 }
 
 static int __must_check __deliver_service(struct kvm_vcpu *vcpu,
@@ -585,13 +587,14 @@ static int __must_check __deliver_service(struct kvm_vcpu *vcpu,
                                         inti->ext.ext_params, 0);
 
        rc  = put_guest_lc(vcpu, EXT_IRQ_SERVICE_SIG, (u16 *)__LC_EXT_INT_CODE);
+       rc |= put_guest_lc(vcpu, 0, (u16 *)__LC_EXT_CPU_ADDR);
        rc |= write_guest_lc(vcpu, __LC_EXT_OLD_PSW,
                             &vcpu->arch.sie_block->gpsw, sizeof(psw_t));
        rc |= read_guest_lc(vcpu, __LC_EXT_NEW_PSW,
                            &vcpu->arch.sie_block->gpsw, sizeof(psw_t));
        rc |= put_guest_lc(vcpu, inti->ext.ext_params,
                           (u32 *)__LC_EXT_PARAMS);
-       return rc;
+       return rc ? -EFAULT : 0;
 }
 
 static int __must_check __deliver_pfault_done(struct kvm_vcpu *vcpu,
@@ -611,7 +614,7 @@ static int __must_check __deliver_pfault_done(struct kvm_vcpu *vcpu,
                            &vcpu->arch.sie_block->gpsw, sizeof(psw_t));
        rc |= put_guest_lc(vcpu, inti->ext.ext_params2,
                           (u64 *)__LC_EXT_PARAMS2);
-       return rc;
+       return rc ? -EFAULT : 0;
 }
 
 static int __must_check __deliver_virtio(struct kvm_vcpu *vcpu,
@@ -636,7 +639,7 @@ static int __must_check __deliver_virtio(struct kvm_vcpu *vcpu,
                           (u32 *)__LC_EXT_PARAMS);
        rc |= put_guest_lc(vcpu, inti->ext.ext_params2,
                           (u64 *)__LC_EXT_PARAMS2);
-       return rc;
+       return rc ? -EFAULT : 0;
 }
 
 static int __must_check __deliver_io(struct kvm_vcpu *vcpu,
@@ -664,7 +667,7 @@ static int __must_check __deliver_io(struct kvm_vcpu *vcpu,
                             &vcpu->arch.sie_block->gpsw, sizeof(psw_t));
        rc |= read_guest_lc(vcpu, __LC_IO_NEW_PSW,
                            &vcpu->arch.sie_block->gpsw, sizeof(psw_t));
-       return rc;
+       return rc ? -EFAULT : 0;
 }
 
 static int __must_check __deliver_mchk_floating(struct kvm_vcpu *vcpu,
@@ -689,7 +692,7 @@ static int __must_check __deliver_mchk_floating(struct kvm_vcpu *vcpu,
                             &vcpu->arch.sie_block->gpsw, sizeof(psw_t));
        rc |= read_guest_lc(vcpu, __LC_MCK_NEW_PSW,
                            &vcpu->arch.sie_block->gpsw, sizeof(psw_t));
-       return rc;
+       return rc ? -EFAULT : 0;
 }
 
 typedef int (*deliver_irq_t)(struct kvm_vcpu *vcpu);
@@ -926,7 +929,7 @@ static int __inject_prog(struct kvm_vcpu *vcpu, struct kvm_s390_irq *irq)
        struct kvm_s390_local_interrupt *li = &vcpu->arch.local_int;
 
        li->irq.pgm = irq->u.pgm;
-       __set_bit(IRQ_PEND_PROG, &li->pending_irqs);
+       set_bit(IRQ_PEND_PROG, &li->pending_irqs);
        return 0;
 }
 
@@ -992,7 +995,7 @@ int __inject_extcall(struct kvm_vcpu *vcpu, struct kvm_s390_irq *irq)
                                   irq->u.extcall.code, 0, 2);
 
        *extcall = irq->u.extcall;
-       __set_bit(IRQ_PEND_EXT_EXTERNAL, &li->pending_irqs);
+       set_bit(IRQ_PEND_EXT_EXTERNAL, &li->pending_irqs);
        atomic_set_mask(CPUSTAT_EXT_INT, li->cpuflags);
        return 0;
 }
@@ -1063,11 +1066,19 @@ static int __inject_mchk(struct kvm_vcpu *vcpu, struct kvm_s390_irq *irq)
                                   mchk->mcic, 2);
 
        /*
-        * Combine mcic with previously injected machine checks and
-        * indicate them all together as described in the Principles
-        * of Operation, Chapter 11, Interruption action
+        * Because repressible machine checks can be indicated along with
+        * exigent machine checks (PoP, Chapter 11, Interruption action)
+        * we need to combine cr14, mcic and external damage code.
+        * Failing storage address and the logout area should not be or'ed
+        * together, we just indicate the last occurrence of the corresponding
+        * machine check
         */
+       mchk->cr14 |= irq->u.mchk.cr14;
        mchk->mcic |= irq->u.mchk.mcic;
+       mchk->ext_damage_code |= irq->u.mchk.ext_damage_code;
+       mchk->failing_storage_address = irq->u.mchk.failing_storage_address;
+       memcpy(&mchk->fixed_logout, &irq->u.mchk.fixed_logout,
+              sizeof(mchk->fixed_logout));
        if (mchk->mcic & MCHK_EX_MASK)
                set_bit(IRQ_PEND_MCHK_EX, &li->pending_irqs);
        else if (mchk->mcic & MCHK_REP_MASK)