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Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Thu, 30 Jan 2020 14:58:47 -0000 Received: from b06wcsmtp001.portsmouth.uk.ibm.com (b06wcsmtp001.portsmouth.uk.ibm.com [9.149.105.160]) by b06cxnps3075.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 00UEwkRs37224536 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 30 Jan 2020 14:58:46 GMT Received: from b06wcsmtp001.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id B5C7CA405B; Thu, 30 Jan 2020 14:58:46 +0000 (GMT) Received: from b06wcsmtp001.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 73A63A4054; Thu, 30 Jan 2020 14:58:46 +0000 (GMT) Received: from dyn-9-152-224-44.boeblingen.de.ibm.com (unknown [9.152.224.44]) by b06wcsmtp001.portsmouth.uk.ibm.com (Postfix) with ESMTP; Thu, 30 Jan 2020 14:58:46 +0000 (GMT) Subject: Re: [PATCH v8 2/4] selftests: KVM: Add fpu and one reg set/get library functions To: Andrew Jones Cc: Thomas Huth , kvm@vger.kernel.org, borntraeger@de.ibm.com, david@redhat.com, cohuck@redhat.com, linux-s390@vger.kernel.org References: <20200129200312.3200-1-frankja@linux.ibm.com> <20200129200312.3200-3-frankja@linux.ibm.com> <72ff36e1-9170-dfb0-4050-f398f9a467eb@redhat.com> <20200130135512.diyyu3wvwqlwpqlx@kamzik.brq.redhat.com> <9d9e0e7a-b006-98b1-6bf0-8c46006835bc@linux.ibm.com> <20200130143008.xy6lrnrrwer6xkdp@kamzik.brq.redhat.com> From: Janosch Frank Autocrypt: addr=frankja@linux.ibm.com; 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Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.2.2 MIME-Version: 1.0 In-Reply-To: <20200130143008.xy6lrnrrwer6xkdp@kamzik.brq.redhat.com> Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="DFFeZVNJbOFSMeSfgn2mZqzUmgjMjFylz" X-TM-AS-GCONF: 00 x-cbid: 20013014-0028-0000-0000-000003D5F05A X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 20013014-0029-0000-0000-0000249A3F77 Message-Id: <8095f321-0d31-1285-7fa5-a751aeb6e56f@linux.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.138,18.0.572 definitions=2020-01-30_04:2020-01-28,2020-01-30 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 priorityscore=1501 suspectscore=3 mlxlogscore=999 bulkscore=0 lowpriorityscore=0 malwarescore=0 clxscore=1015 adultscore=0 spamscore=0 mlxscore=0 impostorscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-1911200001 definitions=main-2001300107 Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --DFFeZVNJbOFSMeSfgn2mZqzUmgjMjFylz Content-Type: multipart/mixed; boundary="d3X8xQHbW6SgQZrVZcGVnUpQYQrABFSHE" --d3X8xQHbW6SgQZrVZcGVnUpQYQrABFSHE Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: quoted-printable On 1/30/20 3:30 PM, Andrew Jones wrote: > On Thu, Jan 30, 2020 at 03:10:55PM +0100, Janosch Frank wrote: >> On 1/30/20 2:55 PM, Andrew Jones wrote: >>> On Thu, Jan 30, 2020 at 11:36:21AM +0100, Thomas Huth wrote: >>>> On 29/01/2020 21.03, Janosch Frank wrote: >>>>> Add library access to more registers. >>>>> >>>>> Signed-off-by: Janosch Frank >>>>> --- >>>>> .../testing/selftests/kvm/include/kvm_util.h | 6 +++ >>>>> tools/testing/selftests/kvm/lib/kvm_util.c | 48 +++++++++++++++= ++++ >>>>> 2 files changed, 54 insertions(+) >>>>> >>>>> diff --git a/tools/testing/selftests/kvm/include/kvm_util.h b/tools= /testing/selftests/kvm/include/kvm_util.h >>>>> index 29cccaf96baf..ae0d14c2540a 100644 >>>>> --- a/tools/testing/selftests/kvm/include/kvm_util.h >>>>> +++ b/tools/testing/selftests/kvm/include/kvm_util.h >>>>> @@ -125,6 +125,12 @@ void vcpu_sregs_set(struct kvm_vm *vm, uint32_= t vcpuid, >>>>> struct kvm_sregs *sregs); >>>>> int _vcpu_sregs_set(struct kvm_vm *vm, uint32_t vcpuid, >>>>> struct kvm_sregs *sregs); >>>>> +void vcpu_fpu_get(struct kvm_vm *vm, uint32_t vcpuid, >>>>> + struct kvm_fpu *fpu); >>>>> +void vcpu_fpu_set(struct kvm_vm *vm, uint32_t vcpuid, >>>>> + struct kvm_fpu *fpu); >=20 > nit: no need for the above line breaks. We don't even get to 80 char. >=20 >>>>> +void vcpu_get_reg(struct kvm_vm *vm, uint32_t vcpuid, struct kvm_o= ne_reg *reg); >>>>> +void vcpu_set_reg(struct kvm_vm *vm, uint32_t vcpuid, struct kvm_o= ne_reg *reg); >>>>> #ifdef __KVM_HAVE_VCPU_EVENTS >>>>> void vcpu_events_get(struct kvm_vm *vm, uint32_t vcpuid, >>>>> struct kvm_vcpu_events *events); >>>>> diff --git a/tools/testing/selftests/kvm/lib/kvm_util.c b/tools/tes= ting/selftests/kvm/lib/kvm_util.c >>>>> index 41cf45416060..dae117728ec6 100644 >>>>> --- a/tools/testing/selftests/kvm/lib/kvm_util.c >>>>> +++ b/tools/testing/selftests/kvm/lib/kvm_util.c >>>>> @@ -1373,6 +1373,54 @@ int _vcpu_sregs_set(struct kvm_vm *vm, uint3= 2_t vcpuid, struct kvm_sregs *sregs) >>>>> return ioctl(vcpu->fd, KVM_SET_SREGS, sregs); >>>>> } >>>>> =20 >>>>> +void vcpu_fpu_get(struct kvm_vm *vm, uint32_t vcpuid, struct kvm_f= pu *fpu) >>>>> +{ >>>>> + struct vcpu *vcpu =3D vcpu_find(vm, vcpuid); >>>>> + int ret; >>>>> + >>>>> + TEST_ASSERT(vcpu !=3D NULL, "vcpu not found, vcpuid: %u", vcpuid)= ; >>>>> + >>>>> + ret =3D ioctl(vcpu->fd, KVM_GET_FPU, fpu); >>>>> + TEST_ASSERT(ret =3D=3D 0, "KVM_GET_FPU failed, rc: %i errno: %i",= >>>>> + ret, errno); >>>>> +} >>>>> + >>>>> +void vcpu_fpu_set(struct kvm_vm *vm, uint32_t vcpuid, struct kvm_f= pu *fpu) >>>>> +{ >>>>> + struct vcpu *vcpu =3D vcpu_find(vm, vcpuid); >>>>> + int ret; >>>>> + >>>>> + TEST_ASSERT(vcpu !=3D NULL, "vcpu not found, vcpuid: %u", vcpuid)= ; >>>>> + >>>>> + ret =3D ioctl(vcpu->fd, KVM_SET_FPU, fpu); >>>>> + TEST_ASSERT(ret =3D=3D 0, "KVM_SET_FPU failed, rc: %i errno: %i",= >>>>> + ret, errno); >>>>> +} >>>>> + >>>>> +void vcpu_get_reg(struct kvm_vm *vm, uint32_t vcpuid, struct kvm_o= ne_reg *reg) >>>>> +{ >>>>> + struct vcpu *vcpu =3D vcpu_find(vm, vcpuid); >>>>> + int ret; >>>>> + >>>>> + TEST_ASSERT(vcpu !=3D NULL, "vcpu not found, vcpuid: %u", vcpuid)= ; >>>>> + >>>>> + ret =3D ioctl(vcpu->fd, KVM_GET_ONE_REG, reg); >>>>> + TEST_ASSERT(ret =3D=3D 0, "KVM_GET_ONE_REG failed, rc: %i errno: = %i", >>>>> + ret, errno); >>>>> +} >>>>> + >>>>> +void vcpu_set_reg(struct kvm_vm *vm, uint32_t vcpuid, struct kvm_o= ne_reg *reg) >>>>> +{ >>>>> + struct vcpu *vcpu =3D vcpu_find(vm, vcpuid); >>>>> + int ret; >>>>> + >>>>> + TEST_ASSERT(vcpu !=3D NULL, "vcpu not found, vcpuid: %u", vcpuid)= ; >>>>> + >>>>> + ret =3D ioctl(vcpu->fd, KVM_SET_ONE_REG, reg); >>>>> + TEST_ASSERT(ret =3D=3D 0, "KVM_SET_ONE_REG failed, rc: %i errno: = %i", >>>>> + ret, errno); >>>>> +} >>>>> + >>>>> /* >>>>> * VCPU Ioctl >>>>> * >>>>> >>>> >>>> Reviewed-by: Thomas Huth >>>> >>> >>> How about what's below instead. It should be equivalent. >> >> With your proposed changes we loose a bit verbosity in the error >> messages. I need to think about which I like more. >=20 > Looks like both error messages are missing something. The ones above ar= e > missing the string version of errno. The ones below are missing the str= ing > version of cmd. It's easy to add the string version of errno, which is > an argument for keeping the functions above (but we could at least use > _vcpu_ioctl to avoid duplicating the vcpu_find and vcpu!=3DNULL assert)= =2E Will do > Or, we could consider adding a kvm_ioctl_cmd_to_string() function, > which might be nice for other ioctl wrappers now and in the future. > It shouldn't be too bad to generate a string table from kvm.h, but of > course we'd have to keep it maintained. I'm currently occupied with managing a lot of patches, so something like that is not very high on my todo list. >=20 > Thanks, > drew >=20 >> >>> >>> Thanks, >>> drew >>> >>> diff --git a/tools/testing/selftests/kvm/include/kvm_util.h b/tools/t= esting/selftests/kvm/include/kvm_util.h >>> index 29cccaf96baf..d96a072e69bf 100644 >>> --- a/tools/testing/selftests/kvm/include/kvm_util.h >>> +++ b/tools/testing/selftests/kvm/include/kvm_util.h >>> @@ -125,6 +125,31 @@ void vcpu_sregs_set(struct kvm_vm *vm, uint32_t = vcpuid, >>> struct kvm_sregs *sregs); >>> int _vcpu_sregs_set(struct kvm_vm *vm, uint32_t vcpuid, >>> struct kvm_sregs *sregs); >>> + >>> +static inline void >>> +vcpu_fpu_get(struct kvm_vm *vm, uint32_t vcpuid, struct kvm_fpu *fpu= ) >>> +{ >>> + vcpu_ioctl(vm, vcpuid, KVM_GET_FPU, fpu); >>> +} >>> + >>> +static inline void >>> +vcpu_fpu_set(struct kvm_vm *vm, uint32_t vcpuid, struct kvm_fpu *fpu= ) >>> +{ >>> + vcpu_ioctl(vm, vcpuid, KVM_SET_FPU, fpu); >>> +} >>> + >>> +static inline void >>> +vcpu_get_reg(struct kvm_vm *vm, uint32_t vcpuid, struct kvm_one_reg = *reg) >>> +{ >>> + vcpu_ioctl(vm, vcpuid, KVM_GET_ONE_REG, reg); >>> +} >>> + >>> +static inline void >>> +vcpu_set_reg(struct kvm_vm *vm, uint32_t vcpuid, struct kvm_one_reg = *reg) >>> +{ >>> + vcpu_ioctl(vm, vcpuid, KVM_SET_ONE_REG, reg); >>> +} >>> + >>> #ifdef __KVM_HAVE_VCPU_EVENTS >>> void vcpu_events_get(struct kvm_vm *vm, uint32_t vcpuid, >>> struct kvm_vcpu_events *events); >>> >> >> >=20 >=20 >=20 --d3X8xQHbW6SgQZrVZcGVnUpQYQrABFSHE-- --DFFeZVNJbOFSMeSfgn2mZqzUmgjMjFylz Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAEBCAAdFiEEwGNS88vfc9+v45Yq41TmuOI4ufgFAl4y7yYACgkQ41TmuOI4 ufjhkBAAvd2ToMIzb0TeOgOoW6N1GnI3RXbF1eQ7GSqkHf65rU4teZJScMyJ1YXR 3HI/u9ihamU4SDOiVJsu341/eKsB4LHaVikSlQJCOdSz+LJHBiX4ZL+aPDWpwSDe aSvATURKF3GFctI4EVk+wjPO5Dqs6qcm6lLYqUftm3Ck98AhivggjjsKXzxBmBcy habv5Boc531O0vLcdjqKFy843Lf04WUtP9nZvPvh2jSpLxETE3imrSrYxF92z1c0 JW83GfeuQ0DA+GhIuDv22VyyDnD9sTnsXXlDiR7w87vdOldsxivZCHQHqUn2xz2O QuqfhhC2ISkmD3y2WW8zD4VcC509dP9FALWFUAhGxdDvbN6W2AO/TK50w6iOp6VQ VyK1fDDNVUgsYZ+83qs8qaM+puJaJY0QZMKSJDgE7NEOi5g6EFg065gOWupx9YF5 GJHSRVqKQ1vgrpKz/LI9VR/LUSZvUKcx5xhg5iuv46ks9om3/9q5mzvxNcgLOn6E jnF9MsRrW7+qwsAbqzYZ1997/Qt66UykHgr2qlAeP1IPg8b2Nas+QV+M8IKQ/Pgm ETOmZSyx71nuqEUQTZrdP56ntOnZU2BXWR9BEvEt0fyZr8ik2BsiIwYQrnQ4rWqI Oe1SYQEdpr93WHLHUIQqHKKRJXvAd6MINQVet9UT/WeGqGebFf0= =4l8F -----END PGP SIGNATURE----- --DFFeZVNJbOFSMeSfgn2mZqzUmgjMjFylz--