From: Janosch Frank <frankja@linux.ibm.com>
To: Cornelia Huck <cohuck@redhat.com>
Cc: thuth@redhat.com, pmorel@linux.ibm.com, david@redhat.com,
qemu-devel@nongnu.org, borntraeger@de.ibm.com,
qemu-s390x@nongnu.org, mihajlov@linux.ibm.com
Subject: Re: [PATCH 06/15] s390x: protvirt: Support unpack facility
Date: Fri, 22 Nov 2019 14:49:21 +0100 [thread overview]
Message-ID: <eeff2c12-9f8d-76c3-b307-a6bbc54e2e0c@linux.ibm.com> (raw)
In-Reply-To: <20191122143949.4880aa1b.cohuck@redhat.com>
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On 11/22/19 2:39 PM, Cornelia Huck wrote:
> On Wed, 20 Nov 2019 06:43:25 -0500
> Janosch Frank <frankja@linux.ibm.com> wrote:
>
>> When a guest has saved a ipib of type 5 and call diagnose308 with
>> subcode 10, we have to setup the protected processing environment via
>> Ultravisor calls. The calls are done by KVM and are exposed via an API.
>>
>> The following steps are necessary:
>> 1. Create a VM (register it with the Ultravisor)
>> 2. Create secure CPUs for all of our current cpus
>> 3. Forward the secure header to the Ultravisor (has all information on
>> how to decrypt the image and VM information)
>> 4. Protect image pages from the host and decrypt them
>> 5. Verify the image integrity
>>
>> Only after step 5 a protected VM is allowed to run.
>>
>> Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
>> ---
>> hw/s390x/Makefile.objs | 1 +
>> hw/s390x/ipl.c | 33 ++++++++
>> hw/s390x/ipl.h | 2 +
>> hw/s390x/pv.c | 118 ++++++++++++++++++++++++++++
>> hw/s390x/pv.h | 26 ++++++
>> hw/s390x/s390-virtio-ccw.c | 45 ++++++++---
>> target/s390x/cpu_features_def.inc.h | 1 +
>> 7 files changed, 216 insertions(+), 10 deletions(-)
>> create mode 100644 hw/s390x/pv.c
>> create mode 100644 hw/s390x/pv.h
>>
>
>> +static int s390_pv_cmd(uint32_t cmd, void *data)
>> +{
>> + int rc;
>> + struct kvm_pv_cmd pv_cmd = {
>> + .cmd = cmd,
>> + .data = (uint64_t)data,
>> + };
>> +
>> + rc = kvm_vm_ioctl(kvm_state, KVM_S390_PV_COMMAND, &pv_cmd);
>> + if (rc) {
>> + error_report("KVM PV command failed cmd: %d rc: %d", cmd, rc);
>> + exit(1);
>> + }
>> + return rc;
>> +}
>> +
>> +static int s390_pv_cmd_vcpu(CPUState *cs, uint32_t cmd, void *data)
>> +{
>> + int rc;
>> + struct kvm_pv_cmd pv_cmd = {
>> + .cmd = cmd,
>> + .data = (uint64_t)data,
>> + };
>> +
>> + rc = kvm_vcpu_ioctl(cs, KVM_S390_PV_COMMAND_VCPU, &pv_cmd);
>> + if (rc) {
>> + error_report("KVM PV VCPU command failed cmd: %d rc: %d", cmd, rc);
>> + exit(1);
>> + }
>> + return rc;
>> +}
>
> If you do a hard exit for any rc != 0 anyway, returning rc does not
> sound very useful :)
>
Yeah, that's also what Pierre said.
I'll need to rethink if there's actually a call where we could recover
from an error and if not make everything void.
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next prev parent reply other threads:[~2019-11-22 13:53 UTC|newest]
Thread overview: 90+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-20 11:43 [PATCH 00/15] s390x: Protected Virtualization support Janosch Frank
2019-11-20 11:43 ` [PATCH 01/15] s390x: Cleanup cpu resets Janosch Frank
2019-11-21 11:10 ` Cornelia Huck
2019-11-21 11:32 ` Janosch Frank
2019-11-21 12:18 ` Cornelia Huck
2019-11-21 12:53 ` Thomas Huth
2019-11-21 13:11 ` Janosch Frank
2019-11-21 13:17 ` Thomas Huth
2019-11-20 11:43 ` [PATCH 02/15] s390x: Beautify diag308 handling Janosch Frank
2019-11-21 11:17 ` Cornelia Huck
2019-11-21 11:27 ` Janosch Frank
2019-11-21 11:21 ` David Hildenbrand
2019-11-21 11:28 ` Janosch Frank
2019-11-21 13:12 ` Thomas Huth
2019-11-21 13:20 ` Thomas Huth
2019-11-21 13:53 ` Janosch Frank
2019-11-20 11:43 ` [PATCH 03/15] s390x: protvirt: Add diag308 subcodes 8 - 10 Janosch Frank
2019-11-21 12:47 ` Cornelia Huck
2019-11-21 14:36 ` Thomas Huth
2020-02-07 7:56 ` Janosch Frank
2019-11-20 11:43 ` [PATCH 04/15] Header sync protvirt Janosch Frank
2019-11-21 12:59 ` Cornelia Huck
2019-11-21 13:12 ` Janosch Frank
2019-11-21 13:17 ` Cornelia Huck
2019-11-20 11:43 ` [PATCH 05/15] s390x: protvirt: Sync PV state Janosch Frank
2019-11-21 13:25 ` Cornelia Huck
2019-11-21 13:43 ` Janosch Frank
2019-11-21 14:43 ` Thomas Huth
2019-11-20 11:43 ` [PATCH 06/15] s390x: protvirt: Support unpack facility Janosch Frank
2019-11-20 13:43 ` Cornelia Huck
2019-11-21 11:33 ` Janosch Frank
2019-11-21 11:27 ` David Hildenbrand
2019-11-21 14:25 ` Janosch Frank
2019-11-21 14:28 ` David Hildenbrand
2019-11-21 14:31 ` Christian Borntraeger
2019-11-21 14:32 ` Janosch Frank
2019-11-22 13:39 ` Cornelia Huck
2019-11-22 13:49 ` Janosch Frank [this message]
2019-11-28 14:07 ` Thomas Huth
2019-11-28 14:20 ` Janosch Frank
2019-11-20 11:43 ` [PATCH 07/15] s390x: protvirt: Handle diag 308 subcodes 0,1,3,4 Janosch Frank
2019-11-21 13:50 ` Cornelia Huck
2019-11-21 14:00 ` Janosch Frank
2019-11-21 14:04 ` Janosch Frank
2019-11-21 14:17 ` Cornelia Huck
2019-11-21 14:23 ` Janosch Frank
2019-11-20 11:43 ` [PATCH 08/15] s390x: protvirt: KVM intercept changes Janosch Frank
2019-11-21 14:07 ` Cornelia Huck
2019-11-21 14:29 ` Janosch Frank
2019-11-21 15:11 ` Thomas Huth
2019-11-28 16:38 ` Janosch Frank
2019-11-28 16:45 ` Cornelia Huck
2019-11-28 16:54 ` Janosch Frank
2019-11-20 11:43 ` [PATCH 09/15] s390x: protvirt: SCLP interpretation Janosch Frank
2019-11-21 14:11 ` Cornelia Huck
2019-11-21 14:24 ` Janosch Frank
2019-11-22 13:48 ` Pierre Morel
2019-11-20 11:43 ` [PATCH 10/15] s390x: protvirt: Add new VCPU reset functions Janosch Frank
2019-11-20 11:43 ` [PATCH 11/15] RFC: s390x: Exit on vcpu reset error Janosch Frank
2019-11-21 12:14 ` David Hildenbrand
2019-11-21 12:19 ` Janosch Frank
2019-11-21 12:22 ` David Hildenbrand
2019-11-20 11:43 ` [PATCH 12/15] s390x: protvirt: Set guest IPL PSW Janosch Frank
2019-11-28 14:30 ` Thomas Huth
2019-11-28 15:39 ` Janosch Frank
2019-11-20 11:43 ` [PATCH 13/15] s390x: protvirt: Move diag 308 data over SIDAD Janosch Frank
2019-11-28 14:40 ` Thomas Huth
2019-11-28 16:08 ` Janosch Frank
2019-11-28 16:14 ` David Hildenbrand
2019-11-20 11:43 ` [PATCH 14/15] s390x: protvirt: Disable address checks for PV guest IO emulation Janosch Frank
2019-11-28 15:28 ` Thomas Huth
2019-11-28 15:36 ` Janosch Frank
2019-11-28 16:10 ` Janosch Frank
2019-11-28 16:18 ` Cornelia Huck
2019-11-28 16:24 ` Janosch Frank
2019-11-28 20:08 ` Thomas Huth
2019-11-20 11:43 ` [PATCH 15/15] s390x: protvirt: Handle SIGP store status correctly Janosch Frank
2019-11-21 11:24 ` David Hildenbrand
2019-11-21 11:29 ` Janosch Frank
2019-11-28 15:30 ` Thomas Huth
2019-11-20 13:26 ` [PATCH 00/15] s390x: Protected Virtualization support Cornelia Huck
2019-11-20 13:33 ` Janosch Frank
2019-11-21 9:13 ` Janosch Frank
2019-11-21 9:39 ` Cornelia Huck
2019-11-29 11:08 ` Daniel P. Berrangé
2019-11-29 12:14 ` Janosch Frank
2019-11-29 12:35 ` Daniel P. Berrangé
2019-11-29 14:02 ` Janosch Frank
2019-11-29 14:30 ` Viktor Mihajlovski
2019-12-03 10:49 ` Daniel P. Berrangé
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