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Tue, 05 May 2020 07:18:14 +0000 Received: from b03ledav005.gho.boulder.ibm.com (b03ledav005.gho.boulder.ibm.com [9.17.130.236]) by b03cxnp07028.gho.boulder.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 0457ICrO50921954 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 5 May 2020 07:18:12 GMT Received: from b03ledav005.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id CEBE9BE051; Tue, 5 May 2020 07:18:12 +0000 (GMT) Received: from b03ledav005.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id A9A5DBE04F; Tue, 5 May 2020 07:18:10 +0000 (GMT) Received: from skywalker.ibmuc.com (unknown [9.85.81.70]) by b03ledav005.gho.boulder.ibm.com (Postfix) with ESMTP; Tue, 5 May 2020 07:18:10 +0000 (GMT) From: "Aneesh Kumar K.V" To: linuxppc-dev@lists.ozlabs.org, mpe@ellerman.id.au Subject: [PATCH v4 12/22] powerpc/kvm/book3s: Add helper for host page table walk Date: Tue, 5 May 2020 12:47:19 +0530 Message-Id: <20200505071729.54912-13-aneesh.kumar@linux.ibm.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200505071729.54912-1-aneesh.kumar@linux.ibm.com> References: <20200505071729.54912-1-aneesh.kumar@linux.ibm.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.138, 18.0.676 definitions=2020-05-05_03:2020-05-04, 2020-05-05 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 adultscore=0 impostorscore=0 mlxscore=0 phishscore=0 spamscore=0 bulkscore=0 lowpriorityscore=0 mlxlogscore=999 malwarescore=0 clxscore=1015 priorityscore=1501 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2003020000 definitions=main-2005050056 X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: "Aneesh Kumar K.V" , npiggin@gmail.com Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" Signed-off-by: Aneesh Kumar K.V --- arch/powerpc/include/asm/kvm_book3s_64.h | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/arch/powerpc/include/asm/kvm_book3s_64.h b/arch/powerpc/include/asm/kvm_book3s_64.h index 2860521992b6..1ca1f6495012 100644 --- a/arch/powerpc/include/asm/kvm_book3s_64.h +++ b/arch/powerpc/include/asm/kvm_book3s_64.h @@ -647,6 +647,22 @@ static inline pte_t *find_kvm_secondary_pte(struct kvm *kvm, unsigned long ea, return pte; } +static inline pte_t *find_kvm_host_pte(struct kvm *kvm, unsigned long mmu_seq, + unsigned long ea, unsigned *hshift) +{ + pte_t *pte; + + VM_WARN(!spin_is_locked(&kvm->mmu_lock), + "%s called with kvm mmu_lock not held \n", __func__); + + if (mmu_notifier_retry(kvm, mmu_seq)) + return NULL; + + pte = __find_linux_pte(kvm->mm->pgd, ea, NULL, hshift); + + return pte; +} + extern pte_t *find_kvm_nested_guest_pte(struct kvm *kvm, unsigned long lpid, unsigned long ea, unsigned *hshift); -- 2.26.2