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Thu, 3 Oct 2019 19:03:26 +0000 Received: from SN6PR2101MB1135.namprd21.prod.outlook.com ([fe80::7d4a:b5b3:1062:e62]) by SN6PR2101MB1135.namprd21.prod.outlook.com ([fe80::7d4a:b5b3:1062:e62%5]) with mapi id 15.20.2327.004; Thu, 3 Oct 2019 19:03:25 +0000 From: Michael Kelley To: "will@kernel.org" , "catalin.marinas@arm.com" , "mark.rutland@arm.com" , "maz@kernel.org" , "linux-arm-kernel@lists.infradead.org" , "gregkh@linuxfoundation.org" , "linux-kernel@vger.kernel.org" , "linux-hyperv@vger.kernel.org" , "devel@linuxdriverproject.org" , "olaf@aepfle.de" , "apw@canonical.com" , vkuznets , "jasowang@redhat.com" , "marcelo.cerri@canonical.com" , KY Srinivasan Subject: [PATCH v5 7/8] Drivers: hv: vmbus: Add hooks for per-CPU IRQ Thread-Topic: [PATCH v5 7/8] Drivers: hv: vmbus: Add hooks for per-CPU IRQ Thread-Index: AQHVeh08iAhZ6pKxjEa5CJwraGxfEg== Date: Thu, 3 Oct 2019 19:03:25 +0000 Message-ID: <1570129355-16005-8-git-send-email-mikelley@microsoft.com> References: <1570129355-16005-1-git-send-email-mikelley@microsoft.com> In-Reply-To: <1570129355-16005-1-git-send-email-mikelley@microsoft.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-clientproxiedby: MWHPR10CA0006.namprd10.prod.outlook.com (2603:10b6:301::16) To SN6PR2101MB1135.namprd21.prod.outlook.com (2603:10b6:805:4::24) authentication-results: spf=none (sender IP is ) smtp.mailfrom=mikelley@microsoft.com; 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DIR:OUT; SFP:1102; SCL:1; SRVR:SN6PR2101MB1102; H:SN6PR2101MB1135.namprd21.prod.outlook.com; FPR:; SPF:None; LANG:en; PTR:InfoNoRecords; A:1; MX:1; received-spf: None (protection.outlook.com: microsoft.com does not designate permitted sender hosts) x-ms-exchange-senderadcheck: 1 x-microsoft-antispam: BCL:0; x-microsoft-antispam-message-info: wTKWdd4+zIZW68WoSUIFCAH4CX3c95fs0vD++DfW9lEyCMrZ836qCjEgkfvFp73/POLLOdJDxFB3xhxpSqLn5XZ4k7YIEJWYczn09KuTQ+ql6DzzFbHxxZq0jk8VUFKQ8ZXmiTN2nwtBatUeoCt9w2mgBg232nFSMi381bJJWBmT696fmojWzkcBOlBEoDC22Jgj4Pidkffuff03oYMYwnsXthNWTqhqVPL20+WtFSkMFd+Na9O+1vNZgsSOWo5IRAUCsARBlWXWwSmIyDxCZsZpSWHnW9wMCiLPK0nQs9mdzJFmIGGrMD/myaXeIn6AeNhO+7Pjy46aAeHafpJYiTMOT2XGw1E+6jTMwec+20sbckU3i4bL2mmJeFfLXK0OE5/cz1tugFtQPOgd1BkeJRrpVi7URiMbdZdxPigBUd0= MIME-Version: 1.0 X-OriginatorOrg: microsoft.com X-MS-Exchange-CrossTenant-Network-Message-Id: 7fcbe12f-f681-4eda-bdb5-08d748345e70 X-MS-Exchange-CrossTenant-originalarrivaltime: 03 Oct 2019 19:03:25.8119 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 72f988bf-86f1-41af-91ab-2d7cd011db47 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: kvb6bKShAQ8AYQreZle1EiX41AC5wMxkNFWlo0hUqcayzNRfxVudKyVqV9NbDtLHexlcwjOWCs6lUs5xGb1W2w== X-MS-Exchange-Transport-CrossTenantHeadersStamped: SN6PR2101MB1102 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20191003_120338_236621_83C5F366 X-CRM114-Status: GOOD ( 10.14 ) X-Spam-Score: -0.2 (/) X-Spam-Report: SpamAssassin version 3.4.2 on bombadil.infradead.org summary: Content analysis details: (-0.2 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at https://www.dnswl.org/, no trust [2a01:111:f400:fe46:0:0:0:730 listed in] [list.dnswl.org] -0.0 SPF_HELO_PASS SPF: HELO matches SPF record -0.0 SPF_PASS SPF: sender matches SPF record -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.0 DKIMWL_WL_HIGH DKIMwl.org - Whitelisted High sender X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Sunil Muthuswamy , "boqun.feng" , Michael Kelley Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org Add hooks to enable/disable a per-CPU IRQ for VMbus. These hooks are in the architecture independent setup and shutdown paths for Hyper-V, and are needed by Linux guests on Hyper-V on ARM64. The x86/x64 implementation is null because VMbus interrupts on x86/x64 don't use an IRQ. Signed-off-by: Michael Kelley --- arch/x86/include/asm/mshyperv.h | 4 ++++ drivers/hv/hv.c | 3 +++ 2 files changed, 7 insertions(+) diff --git a/arch/x86/include/asm/mshyperv.h b/arch/x86/include/asm/mshyperv.h index f4138ae..583e1ce 100644 --- a/arch/x86/include/asm/mshyperv.h +++ b/arch/x86/include/asm/mshyperv.h @@ -56,6 +56,10 @@ typedef int (*hyperv_fill_flush_list_func)( #endif void hyperv_vector_handler(struct pt_regs *regs); +/* On x86/x64, there isn't a real IRQ to be enabled/disable */ +static inline void hv_enable_vmbus_irq(void) {} +static inline void hv_disable_vmbus_irq(void) {} + /* * Routines for stimer0 Direct Mode handling. * On x86/x64, there are no percpu actions to take. diff --git a/drivers/hv/hv.c b/drivers/hv/hv.c index fcc5279..51d8f8a 100644 --- a/drivers/hv/hv.c +++ b/drivers/hv/hv.c @@ -180,6 +180,7 @@ void hv_synic_enable_regs(unsigned int cpu) hv_set_siefp(siefp.as_uint64); /* Setup the shared SINT. */ + hv_enable_vmbus_irq(); hv_get_synint_state(VMBUS_MESSAGE_SINT, shared_sint.as_uint64); shared_sint.vector = HYPERVISOR_CALLBACK_VECTOR; @@ -241,6 +242,8 @@ void hv_synic_disable_regs(unsigned int cpu) hv_get_synic_state(sctrl.as_uint64); sctrl.enable = 0; hv_set_synic_state(sctrl.as_uint64); + + hv_disable_vmbus_irq(); } int hv_synic_cleanup(unsigned int cpu)