Message ID | 20231201132618.555031-5-vaibhav@linux.ibm.com |
---|---|
State | New |
Headers | show
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Fri, 1 Dec 2023 13:26:47 GMT Received: from smtpav01.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id C4B372004B; Fri, 1 Dec 2023 13:26:47 +0000 (GMT) Received: from smtpav01.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 0A84620043; Fri, 1 Dec 2023 13:26:44 +0000 (GMT) Received: from vaibhav?linux.ibm.com (unknown [9.171.33.138]) by smtpav01.fra02v.mail.ibm.com (Postfix) with SMTP; Fri, 1 Dec 2023 13:26:43 +0000 (GMT) Received: by vaibhav@linux.ibm.com (sSMTP sendmail emulation); Fri, 01 Dec 2023 18:56:43 +0530 From: Vaibhav Jain <vaibhav@linux.ibm.com> To: linuxppc-dev@lists.ozlabs.org, kvm@vger.kernel.org, kvm-ppc@vger.kernel.org Cc: Vaibhav Jain <vaibhav@linux.ibm.com>, Nicholas Piggin <npiggin@gmail.com>, Michael Ellerman <mpe@ellerman.id.au>, Jordan Niethe <jniethe5@gmail.com>, Vaidyanathan Srinivasan <svaidy@linux.vnet.ibm.com>, mikey@neuling.org, paulus@ozlabs.org, sbhat@linux.ibm.com, gautam@linux.ibm.com, kconsul@linux.vnet.ibm.com, amachhiw@linux.vnet.ibm.com, David.Laight@ACULAB.COM Subject: [PATCH 04/12] KVM: PPC: Book3S HV nestedv2: Get the PID only if needed to copy tofrom a guest Date: Fri, 1 Dec 2023 18:56:09 +0530 Message-ID: <20231201132618.555031-5-vaibhav@linux.ibm.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20231201132618.555031-1-vaibhav@linux.ibm.com> References: <20231201132618.555031-1-vaibhav@linux.ibm.com> Precedence: bulk X-Mailing-List: kvm-ppc@vger.kernel.org List-Id: <kvm-ppc.vger.kernel.org> List-Subscribe: <mailto:kvm-ppc+subscribe@vger.kernel.org> List-Unsubscribe: <mailto:kvm-ppc+unsubscribe@vger.kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-GUID: TrRXnPsIrL19Fjyn1cOpDsqc0lf3F24S X-Proofpoint-ORIG-GUID: Hz5eLC7NM-2brcZ3txD_leRiQMvWgDBQ X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.997,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2023-12-01_11,2023-11-30_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxscore=0 phishscore=0 spamscore=0 bulkscore=0 lowpriorityscore=0 mlxlogscore=961 clxscore=1015 impostorscore=0 malwarescore=0 priorityscore=1501 adultscore=0 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2311060000 definitions=main-2312010091 |
Series |
KVM: PPC: Nested APIv2 : Performance improvements
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diff --git a/arch/powerpc/kvm/book3s_64_mmu_radix.c b/arch/powerpc/kvm/book3s_64_mmu_radix.c index 175a8eb2681f..916af6c153a5 100644 --- a/arch/powerpc/kvm/book3s_64_mmu_radix.c +++ b/arch/powerpc/kvm/book3s_64_mmu_radix.c @@ -97,7 +97,7 @@ static long kvmhv_copy_tofrom_guest_radix(struct kvm_vcpu *vcpu, gva_t eaddr, void *to, void *from, unsigned long n) { int lpid = vcpu->kvm->arch.lpid; - int pid = kvmppc_get_pid(vcpu); + int pid; /* This would cause a data segment intr so don't allow the access */ if (eaddr & (0x3FFUL << 52)) @@ -110,6 +110,8 @@ static long kvmhv_copy_tofrom_guest_radix(struct kvm_vcpu *vcpu, gva_t eaddr, /* If accessing quadrant 3 then pid is expected to be 0 */ if (((eaddr >> 62) & 0x3) == 0x3) pid = 0; + else + pid = kvmppc_get_pid(vcpu); eaddr &= ~(0xFFFUL << 52);