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Wed, 5 Jun 2024 13:07:04 +0000 (GMT) Subject: [PATCH v2 4/8] KVM: PPC: Book3S HV nestedv2: Keep nested guest DEXCR in sync From: Shivaprasad G Bhat To: kvm@vger.kernel.org, linux-doc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org Cc: pbonzini@redhat.com, naveen.n.rao@linux.ibm.com, christophe.leroy@csgroup.eu, corbet@lwn.net, mpe@ellerman.id.au, namhyung@kernel.org, npiggin@gmail.com, pbonzini@redhat.com, sbhat@linux.ibm.com, jniethe5@gmail.com, atrajeev@linux.vnet.ibm.com, linux-kernel@vger.kernel.org Date: Wed, 05 Jun 2024 13:07:04 +0000 Message-ID: <171759281060.1480.654592298305141881.stgit@linux.ibm.com> In-Reply-To: <171759276071.1480.9356137231993600304.stgit@linux.ibm.com> References: <171759276071.1480.9356137231993600304.stgit@linux.ibm.com> User-Agent: StGit/1.5 Precedence: bulk X-Mailing-List: kvm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: d-QnL1F6SFNwTvmNCisfgUqSQYQNSca- X-Proofpoint-GUID: 9qDg-aPxDAZFStNZWqAg9C3r8j_sOg1R X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1039,Hydra:6.0.680,FMLib:17.12.28.16 definitions=2024-06-05_02,2024-06-05_02,2024-05-17_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 priorityscore=1501 spamscore=0 bulkscore=0 adultscore=0 mlxlogscore=909 mlxscore=0 impostorscore=0 suspectscore=0 malwarescore=0 clxscore=1015 phishscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2405010000 definitions=main-2406050099 The nestedv2 APIs has the guest state element defined for DEXCR for the save-restore with L0. However, its ignored in the code. The patch takes care of this for the DEXCR GSID. Signed-off-by: Shivaprasad G Bhat Reviewed-by: Nicholas Piggin --- arch/powerpc/kvm/book3s_hv_nestedv2.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/arch/powerpc/kvm/book3s_hv_nestedv2.c b/arch/powerpc/kvm/book3s_hv_nestedv2.c index 1091f7a83b25..d207a6d936ff 100644 --- a/arch/powerpc/kvm/book3s_hv_nestedv2.c +++ b/arch/powerpc/kvm/book3s_hv_nestedv2.c @@ -193,6 +193,9 @@ static int gs_msg_ops_vcpu_fill_info(struct kvmppc_gs_buff *gsb, case KVMPPC_GSID_DAWRX1: rc = kvmppc_gse_put_u32(gsb, iden, vcpu->arch.dawrx1); break; + case KVMPPC_GSID_DEXCR: + rc = kvmppc_gse_put_u64(gsb, iden, vcpu->arch.dexcr); + break; case KVMPPC_GSID_CIABR: rc = kvmppc_gse_put_u64(gsb, iden, vcpu->arch.ciabr); break; @@ -441,6 +444,9 @@ static int gs_msg_ops_vcpu_refresh_info(struct kvmppc_gs_msg *gsm, case KVMPPC_GSID_DAWRX1: vcpu->arch.dawrx1 = kvmppc_gse_get_u32(gse); break; + case KVMPPC_GSID_DEXCR: + vcpu->arch.dexcr = kvmppc_gse_get_u64(gse); + break; case KVMPPC_GSID_CIABR: vcpu->arch.ciabr = kvmppc_gse_get_u64(gse); break;