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Thu, 19 Mar 2020 03:57:30 +0000 Received: from b01ledav004.gho.pok.ibm.com (b01ledav004.gho.pok.ibm.com [9.57.199.109]) by b01cxnp22034.gho.pok.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 02J3vTAi48497030 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 19 Mar 2020 03:57:30 GMT Received: from b01ledav004.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id D3FB911206D; Thu, 19 Mar 2020 03:57:29 +0000 (GMT) Received: from b01ledav004.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id D24F5112063; Thu, 19 Mar 2020 03:57:26 +0000 (GMT) Received: from skywalker.ibmuc.com (unknown [9.199.34.213]) by b01ledav004.gho.pok.ibm.com (Postfix) with ESMTP; Thu, 19 Mar 2020 03:57:26 +0000 (GMT) From: "Aneesh Kumar K.V" To: linuxppc-dev@lists.ozlabs.org, mpe@ellerman.id.au, linux-mm@kvack.org, linux-kernel@vger.kernel.org, kvm-ppc@vger.kernel.org Cc: npiggin@gmail.com, paulus@ozlabs.org, leonardo@linux.ibm.com, kirill@shutemov.name, "Aneesh Kumar K.V" Subject: [PATCH v2 18/22] powerpc/kvm/book3s: Use find_kvm_host_pte in kvmppc_get_hpa Date: Thu, 19 Mar 2020 09:26:05 +0530 Message-Id: <20200319035609.158654-19-aneesh.kumar@linux.ibm.com> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200319035609.158654-1-aneesh.kumar@linux.ibm.com> References: <20200319035609.158654-1-aneesh.kumar@linux.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.138,18.0.645 definitions=2020-03-18_10:2020-03-18,2020-03-18 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 adultscore=0 lowpriorityscore=0 mlxscore=0 clxscore=1015 priorityscore=1501 spamscore=0 malwarescore=0 impostorscore=0 suspectscore=0 bulkscore=0 mlxlogscore=985 phishscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2003020000 definitions=main-2003190015 Content-Transfer-Encoding: quoted-printable X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: Signed-off-by: Aneesh Kumar K.V --- arch/powerpc/kvm/book3s_hv_rm_mmu.c | 32 ++++++++++------------------- 1 file changed, 11 insertions(+), 21 deletions(-) diff --git a/arch/powerpc/kvm/book3s_hv_rm_mmu.c b/arch/powerpc/kvm/book3= s_hv_rm_mmu.c index 83e987fecf97..3b168c69d503 100644 --- a/arch/powerpc/kvm/book3s_hv_rm_mmu.c +++ b/arch/powerpc/kvm/book3s_hv_rm_mmu.c @@ -878,8 +878,8 @@ long kvmppc_h_clear_mod(struct kvm_vcpu *vcpu, unsign= ed long flags, return ret; } =20 -static int kvmppc_get_hpa(struct kvm_vcpu *vcpu, unsigned long gpa, - int writing, unsigned long *hpa, +static int kvmppc_get_hpa(struct kvm_vcpu *vcpu, unsigned long mmu_seq, + unsigned long gpa, int writing, unsigned long *hpa, struct kvm_memory_slot **memslot_p) { struct kvm *kvm =3D vcpu->kvm; @@ -898,7 +898,7 @@ static int kvmppc_get_hpa(struct kvm_vcpu *vcpu, unsi= gned long gpa, hva =3D __gfn_to_hva_memslot(memslot, gfn); =20 /* Try to find the host pte for that virtual address */ - ptep =3D __find_linux_pte(vcpu->arch.pgdir, hva, NULL, &shift); + ptep =3D find_kvm_host_pte(kvm, mmu_seq, hva, &shift); if (!ptep) return H_TOO_HARD; pte =3D kvmppc_read_update_linux_pte(ptep, writing); @@ -933,16 +933,11 @@ static long kvmppc_do_h_page_init_zero(struct kvm_v= cpu *vcpu, mmu_seq =3D kvm->mmu_notifier_seq; smp_rmb(); =20 - ret =3D kvmppc_get_hpa(vcpu, dest, 1, &pa, &memslot); - if (ret !=3D H_SUCCESS) - return ret; - - /* Check if we've been invalidated */ arch_spin_lock(&kvm->mmu_lock.rlock.raw_lock); - if (mmu_notifier_retry(kvm, mmu_seq)) { - ret =3D H_TOO_HARD; + + ret =3D kvmppc_get_hpa(vcpu, mmu_seq, dest, 1, &pa, &memslot); + if (ret !=3D H_SUCCESS) goto out_unlock; - } =20 /* Zero the page */ for (i =3D 0; i < SZ_4K; i +=3D L1_CACHE_BYTES, pa +=3D L1_CACHE_BYTES) @@ -966,19 +961,14 @@ static long kvmppc_do_h_page_init_copy(struct kvm_v= cpu *vcpu, mmu_seq =3D kvm->mmu_notifier_seq; smp_rmb(); =20 - ret =3D kvmppc_get_hpa(vcpu, dest, 1, &dest_pa, &dest_memslot); - if (ret !=3D H_SUCCESS) - return ret; - ret =3D kvmppc_get_hpa(vcpu, src, 0, &src_pa, NULL); + arch_spin_lock(&kvm->mmu_lock.rlock.raw_lock); + ret =3D kvmppc_get_hpa(vcpu, mmu_seq, dest, 1, &dest_pa, &dest_memslot)= ; if (ret !=3D H_SUCCESS) - return ret; + goto out_unlock; =20 - /* Check if we've been invalidated */ - arch_spin_lock(&kvm->mmu_lock.rlock.raw_lock); - if (mmu_notifier_retry(kvm, mmu_seq)) { - ret =3D H_TOO_HARD; + ret =3D kvmppc_get_hpa(vcpu, mmu_seq, src, 0, &src_pa, NULL); + if (ret !=3D H_SUCCESS) goto out_unlock; - } =20 /* Copy the page */ memcpy((void *)dest_pa, (void *)src_pa, SZ_4K); --=20 2.24.1