From: David Hildenbrand <david@redhat.com> To: Christian Borntraeger <borntraeger@de.ibm.com>, Janosch Frank <frankja@linux.vnet.ibm.com> Cc: KVM <kvm@vger.kernel.org>, Cornelia Huck <cohuck@redhat.com>, Thomas Huth <thuth@redhat.com>, Ulrich Weigand <Ulrich.Weigand@de.ibm.com>, Claudio Imbrenda <imbrenda@linux.ibm.com>, linux-s390 <linux-s390@vger.kernel.org>, Michael Mueller <mimu@linux.ibm.com>, Vasily Gorbik <gor@linux.ibm.com>, Janosch Frank <frankja@linux.ibm.com> Subject: Re: [PATCH v2 28/42] KVM: s390: protvirt: Add program exception injection Date: Tue, 18 Feb 2020 10:33:28 +0100 Message-ID: <0911c8c1-0877-047b-0da5-4c7f79aef3ae@redhat.com> (raw) In-Reply-To: <20200214222658.12946-29-borntraeger@de.ibm.com> On 14.02.20 23:26, Christian Borntraeger wrote: > From: Janosch Frank <frankja@linux.ibm.com> > > Only two program exceptions can be injected for a protected guest: > specification and operand. > > For both, a code needs to be specified in the interrupt injection > control of the state description, as the guest prefix page is not > accessible to KVM for such guests. > > Signed-off-by: Janosch Frank <frankja@linux.ibm.com> > Reviewed-by: Cornelia Huck <cohuck@redhat.com> > Reviewed-by: Thomas Huth <thuth@redhat.com> > [borntraeger@de.ibm.com: patch merging, splitting, fixing] > Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> > --- > arch/s390/kvm/interrupt.c | 18 ++++++++++++++++++ > 1 file changed, 18 insertions(+) > > diff --git a/arch/s390/kvm/interrupt.c b/arch/s390/kvm/interrupt.c > index 3e160d9a214f..7a10096fa204 100644 > --- a/arch/s390/kvm/interrupt.c > +++ b/arch/s390/kvm/interrupt.c > @@ -836,6 +836,21 @@ static int __must_check __deliver_external_call(struct kvm_vcpu *vcpu) > return rc ? -EFAULT : 0; > } > > +static int __deliver_prog_pv(struct kvm_vcpu *vcpu, u16 code) > +{ > + switch (code) { > + case PGM_SPECIFICATION: > + vcpu->arch.sie_block->iictl = IICTL_CODE_SPECIFICATION; > + break; > + case PGM_OPERAND: > + vcpu->arch.sie_block->iictl = IICTL_CODE_OPERAND; > + break; > + default: > + return -EINVAL; > + } > + return 0; > +} > + > static int __must_check __deliver_prog(struct kvm_vcpu *vcpu) > { > struct kvm_s390_local_interrupt *li = &vcpu->arch.local_int; > @@ -856,6 +871,9 @@ static int __must_check __deliver_prog(struct kvm_vcpu *vcpu) > trace_kvm_s390_deliver_interrupt(vcpu->vcpu_id, KVM_S390_PROGRAM_INT, > pgm_info.code, 0); > > + if (kvm_s390_pv_is_protected(vcpu->kvm)) Can we actually ever have PER set, and what would happen if so? Shouldn't we also return -EINVAL? > + return __deliver_prog_pv(vcpu, pgm_info.code & ~PGM_PER); > + > switch (pgm_info.code & ~PGM_PER) { > case PGM_AFX_TRANSLATION: > case PGM_ASX_TRANSLATION: > -- Thanks, David / dhildenb
next prev parent reply index Thread overview: 132+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-02-14 22:26 [PATCH v2 00/42] KVM: s390: Add support for protected VMs Christian Borntraeger 2020-02-14 22:26 ` [PATCH v2 01/42] mm:gup/writeback: add callbacks for inaccessible pages Christian Borntraeger 2020-02-17 9:14 ` David Hildenbrand 2020-02-17 11:10 ` Christian Borntraeger 2020-02-18 8:27 ` David Hildenbrand 2020-02-18 15:46 ` Sean Christopherson 2020-02-18 16:02 ` Will Deacon 2020-02-18 16:15 ` Christian Borntraeger 2020-02-18 21:35 ` Sean Christopherson 2020-02-19 8:31 ` David Hildenbrand 2020-02-14 22:26 ` [PATCH v2 02/42] KVM: s390/interrupt: do not pin adapter interrupt pages Christian Borntraeger 2020-02-17 9:43 ` David Hildenbrand 2020-02-20 12:18 ` David Hildenbrand 2020-02-20 13:31 ` Christian Borntraeger 2020-02-20 13:34 ` David Hildenbrand 2020-02-14 22:26 ` [PATCH v2 03/42] s390/protvirt: introduce host side setup Christian Borntraeger 2020-02-17 9:53 ` David Hildenbrand 2020-02-17 11:11 ` Christian Borntraeger 2020-02-17 11:13 ` David Hildenbrand 2020-02-14 22:26 ` [PATCH v2 04/42] s390/protvirt: add ultravisor initialization Christian Borntraeger 2020-02-17 9:57 ` David Hildenbrand 2020-02-17 11:13 ` Christian Borntraeger 2020-02-14 22:26 ` [PATCH v2 05/42] s390/mm: provide memory management functions for protected KVM guests Christian Borntraeger 2020-02-17 10:21 ` David Hildenbrand 2020-02-17 11:28 ` Christian Borntraeger 2020-02-17 12:07 ` David Hildenbrand 2020-02-14 22:26 ` [PATCH v2 06/42] s390/mm: add (non)secure page access exceptions handlers Christian Borntraeger 2020-02-14 22:26 ` [PATCH v2 07/42] KVM: s390: protvirt: Add UV debug trace Christian Borntraeger 2020-02-17 10:41 ` David Hildenbrand 2020-02-14 22:26 ` [PATCH v2 08/42] KVM: s390: add new variants of UV CALL Christian Borntraeger 2020-02-17 10:42 ` David Hildenbrand 2020-02-14 22:26 ` [PATCH v2 09/42] KVM: s390: protvirt: Add initial vm and cpu lifecycle handling Christian Borntraeger 2020-02-17 10:56 ` David Hildenbrand 2020-02-17 12:04 ` Christian Borntraeger 2020-02-17 12:09 ` David Hildenbrand 2020-02-17 14:53 ` [PATCH 0/2] example changes Christian Borntraeger 2020-02-17 14:53 ` [PATCH 1/2] lock changes Christian Borntraeger 2020-02-17 14:53 ` [PATCH 2/2] merge vm/cpu create Christian Borntraeger 2020-02-17 15:00 ` Janosch Frank 2020-02-17 15:02 ` Christian Borntraeger 2020-02-19 11:02 ` Christian Borntraeger 2020-02-17 19:18 ` [PATCH 0/2] example changes David Hildenbrand 2020-02-18 8:09 ` [PATCH v2 09/42] KVM: s390: protvirt: Add initial vm and cpu lifecycle handling Christian Borntraeger 2020-02-18 8:39 ` [PATCH v2.1] " Christian Borntraeger 2020-02-18 9:12 ` David Hildenbrand 2020-02-18 21:18 ` Christian Borntraeger 2020-02-19 8:32 ` David Hildenbrand 2020-02-19 11:01 ` Christian Borntraeger 2020-02-18 9:56 ` David Hildenbrand 2020-02-18 20:26 ` Christian Borntraeger 2020-02-14 22:26 ` [PATCH v2 10/42] KVM: s390: protvirt: Add KVM api documentation Christian Borntraeger 2020-02-14 22:26 ` [PATCH v2 11/42] KVM: s390: protvirt: Secure memory is not mergeable Christian Borntraeger 2020-02-14 22:26 ` [PATCH v2 12/42] KVM: s390/mm: Make pages accessible before destroying the guest Christian Borntraeger 2020-02-14 22:26 ` [PATCH v2 13/42] KVM: s390: protvirt: Handle SE notification interceptions Christian Borntraeger 2020-02-14 22:26 ` [PATCH v2 14/42] KVM: s390: protvirt: Instruction emulation Christian Borntraeger 2020-02-14 22:26 ` [PATCH v2 15/42] KVM: s390: protvirt: Add interruption injection controls Christian Borntraeger 2020-02-17 10:59 ` David Hildenbrand 2020-02-14 22:26 ` [PATCH v2 16/42] KVM: s390: protvirt: Implement interruption injection Christian Borntraeger 2020-02-14 22:26 ` [PATCH v2 17/42] KVM: s390: protvirt: Add SCLP interrupt handling Christian Borntraeger 2020-02-14 22:26 ` [PATCH v2 18/42] KVM: s390: protvirt: Handle spec exception loops Christian Borntraeger 2020-02-14 22:26 ` [PATCH v2 19/42] KVM: s390: protvirt: Add new gprs location handling Christian Borntraeger 2020-02-17 11:01 ` David Hildenbrand 2020-02-17 11:33 ` Christian Borntraeger 2020-02-17 14:37 ` Janosch Frank 2020-02-14 22:26 ` [PATCH v2 20/42] KVM: S390: protvirt: Introduce instruction data area bounce buffer Christian Borntraeger 2020-02-17 11:08 ` David Hildenbrand 2020-02-17 14:47 ` Janosch Frank 2020-02-17 15:00 ` Christian Borntraeger 2020-02-17 15:38 ` Janosch Frank 2020-02-17 16:58 ` Christian Borntraeger 2020-02-14 22:26 ` [PATCH v2 21/42] KVM: s390: protvirt: handle secure guest prefix pages Christian Borntraeger 2020-02-17 11:11 ` David Hildenbrand 2020-02-14 22:26 ` [PATCH v2 22/42] KVM: s390/mm: handle guest unpin events Christian Borntraeger 2020-02-17 14:23 ` David Hildenbrand 2020-02-14 22:26 ` [PATCH v2 23/42] KVM: s390: protvirt: Write sthyi data to instruction data area Christian Borntraeger 2020-02-17 14:24 ` David Hildenbrand 2020-02-17 18:40 ` Christian Borntraeger 2020-02-17 19:16 ` David Hildenbrand 2020-02-14 22:26 ` [PATCH v2 24/42] KVM: s390: protvirt: STSI handling Christian Borntraeger 2020-02-18 8:35 ` David Hildenbrand 2020-02-18 8:44 ` Christian Borntraeger 2020-02-18 9:08 ` David Hildenbrand 2020-02-18 9:11 ` Christian Borntraeger 2020-02-18 9:13 ` David Hildenbrand 2020-02-14 22:26 ` [PATCH v2 25/42] KVM: s390: protvirt: disallow one_reg Christian Borntraeger 2020-02-18 8:40 ` David Hildenbrand 2020-02-18 8:57 ` Christian Borntraeger 2020-02-14 22:26 ` [PATCH v2 26/42] KVM: s390: protvirt: Do only reset registers that are accessible Christian Borntraeger 2020-02-18 8:42 ` David Hildenbrand 2020-02-18 9:20 ` Christian Borntraeger 2020-02-18 9:28 ` David Hildenbrand 2020-02-14 22:26 ` [PATCH v2 27/42] KVM: s390: protvirt: Only sync fmt4 registers Christian Borntraeger 2020-02-14 22:26 ` [PATCH v2 28/42] KVM: s390: protvirt: Add program exception injection Christian Borntraeger 2020-02-18 9:33 ` David Hildenbrand [this message] 2020-02-18 9:37 ` Christian Borntraeger 2020-02-18 9:39 ` David Hildenbrand 2020-02-14 22:26 ` [PATCH v2 29/42] KVM: s390: protvirt: Add diag 308 subcode 8 - 10 handling Christian Borntraeger 2020-02-18 9:38 ` David Hildenbrand 2020-02-19 12:45 ` Christian Borntraeger 2020-02-14 22:26 ` [PATCH v2 30/42] KVM: s390: protvirt: UV calls in support of diag308 0, 1 Christian Borntraeger 2020-02-18 9:44 ` David Hildenbrand 2020-02-19 11:53 ` Christian Borntraeger 2020-02-14 22:26 ` [PATCH v2 31/42] KVM: s390: protvirt: Report CPU state to Ultravisor Christian Borntraeger 2020-02-18 9:48 ` David Hildenbrand 2020-02-19 19:36 ` Christian Borntraeger 2020-02-19 19:46 ` Christian Borntraeger 2020-02-20 10:52 ` David Hildenbrand 2020-02-14 22:26 ` [PATCH v2 32/42] KVM: s390: protvirt: Support cmd 5 operation state Christian Borntraeger 2020-02-18 9:50 ` David Hildenbrand 2020-02-19 11:06 ` Christian Borntraeger 2020-02-19 11:08 ` David Hildenbrand 2020-02-14 22:26 ` [PATCH v2 33/42] KVM: s390: protvirt: Mask PSW interrupt bits for interception 104 and 112 Christian Borntraeger 2020-02-18 9:53 ` David Hildenbrand 2020-02-18 10:02 ` David Hildenbrand 2020-02-18 10:05 ` Christian Borntraeger 2020-02-14 22:26 ` [PATCH v2 34/42] KVM: s390: protvirt: do not inject interrupts after start Christian Borntraeger 2020-02-18 9:53 ` David Hildenbrand 2020-02-18 10:02 ` David Hildenbrand 2020-02-14 22:26 ` [PATCH v2 35/42] KVM: s390: protvirt: Add UV cpu reset calls Christian Borntraeger 2020-02-18 9:54 ` David Hildenbrand 2020-02-14 22:26 ` [PATCH v2 36/42] DOCUMENTATION: Protected virtual machine introduction and IPL Christian Borntraeger 2020-02-14 22:26 ` [PATCH v2 37/42] s390/uv: Fix handling of length extensions (already in s390 tree) Christian Borntraeger 2020-02-14 22:26 ` [PATCH v2 38/42] s390: protvirt: Add sysfs firmware interface for Ultravisor information Christian Borntraeger 2020-02-14 22:26 ` [PATCH v2 39/42] example for future extension: mm:gup/writeback: add callbacks for inaccessible pages: error cases Christian Borntraeger 2020-02-18 16:25 ` Will Deacon 2020-02-18 16:30 ` Christian Borntraeger 2020-02-18 16:33 ` Will Deacon 2020-02-14 22:26 ` [PATCH v2 40/42] example for future extension: mm:gup/writeback: add callbacks for inaccessible pages: source indication Christian Borntraeger 2020-02-17 14:15 ` Ulrich Weigand 2020-02-17 14:38 ` Christian Borntraeger 2020-02-14 22:26 ` [PATCH v2 41/42] potential fixup for "s390/mm: provide memory management functions for protected KVM guests" Christian Borntraeger 2020-02-14 22:26 ` [PATCH v2 42/42] KVM: s390: rstify new ioctls in api.rst Christian Borntraeger
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