From: shuo.a.liu@intel.com
To: linux-kernel@vger.kernel.org, x86@kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
"H . Peter Anvin" <hpa@zytor.com>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
Sean Christopherson <sean.j.christopherson@intel.com>,
Yu Wang <yu1.wang@intel.com>,
Reinette Chatre <reinette.chatre@intel.com>,
Shuo Liu <shuo.a.liu@intel.com>, Zhi Wang <zhi.a.wang@intel.com>,
Zhenyu Wang <zhenyuw@linux.intel.com>
Subject: [PATCH v5 14/17] virt: acrn: Introduce I/O ranges operation interfaces
Date: Mon, 19 Oct 2020 14:18:00 +0800 [thread overview]
Message-ID: <20201019061803.13298-15-shuo.a.liu@intel.com> (raw)
In-Reply-To: <20201019061803.13298-1-shuo.a.liu@intel.com>
From: Shuo Liu <shuo.a.liu@intel.com>
An I/O request of a User VM, which is constructed by hypervisor, is
distributed by the ACRN Hypervisor Service Module to an I/O client
corresponding to the address range of the I/O request.
I/O client maintains a list of address ranges. Introduce
acrn_ioreq_range_{add,del}() to manage these address ranges.
Signed-off-by: Shuo Liu <shuo.a.liu@intel.com>
Reviewed-by: Reinette Chatre <reinette.chatre@intel.com>
Cc: Zhi Wang <zhi.a.wang@intel.com>
Cc: Zhenyu Wang <zhenyuw@linux.intel.com>
Cc: Yu Wang <yu1.wang@intel.com>
Cc: Reinette Chatre <reinette.chatre@intel.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/virt/acrn/acrn_drv.h | 4 +++
drivers/virt/acrn/ioreq.c | 60 ++++++++++++++++++++++++++++++++++++
2 files changed, 64 insertions(+)
diff --git a/drivers/virt/acrn/acrn_drv.h b/drivers/virt/acrn/acrn_drv.h
index 701c83319115..5b824fa1ee57 100644
--- a/drivers/virt/acrn/acrn_drv.h
+++ b/drivers/virt/acrn/acrn_drv.h
@@ -199,6 +199,10 @@ struct acrn_ioreq_client *acrn_ioreq_client_create(struct acrn_vm *vm,
void *data, bool is_default,
const char *name);
void acrn_ioreq_client_destroy(struct acrn_ioreq_client *client);
+int acrn_ioreq_range_add(struct acrn_ioreq_client *client,
+ u32 type, u64 start, u64 end);
+void acrn_ioreq_range_del(struct acrn_ioreq_client *client,
+ u32 type, u64 start, u64 end);
int acrn_msi_inject(struct acrn_vm *vm, u64 msi_addr, u64 msi_data);
diff --git a/drivers/virt/acrn/ioreq.c b/drivers/virt/acrn/ioreq.c
index b2dbac205078..aa21c8ccc63a 100644
--- a/drivers/virt/acrn/ioreq.c
+++ b/drivers/virt/acrn/ioreq.c
@@ -101,6 +101,66 @@ int acrn_ioreq_request_default_complete(struct acrn_vm *vm, u16 vcpu)
return ret;
}
+/**
+ * acrn_ioreq_range_add() - Add an iorange monitored by an ioreq client
+ * @client: The ioreq client
+ * @type: Type (ACRN_IOREQ_TYPE_MMIO or ACRN_IOREQ_TYPE_PORTIO)
+ * @start: Start address of iorange
+ * @end: End address of iorange
+ *
+ * Return: 0 on success, <0 on error
+ */
+int acrn_ioreq_range_add(struct acrn_ioreq_client *client,
+ u32 type, u64 start, u64 end)
+{
+ struct acrn_ioreq_range *range;
+
+ if (end < start) {
+ dev_err(acrn_dev.this_device,
+ "Invalid IO range [0x%llx,0x%llx]\n", start, end);
+ return -EINVAL;
+ }
+
+ range = kzalloc(sizeof(*range), GFP_KERNEL);
+ if (!range)
+ return -ENOMEM;
+
+ range->type = type;
+ range->start = start;
+ range->end = end;
+
+ write_lock_bh(&client->range_lock);
+ list_add(&range->list, &client->range_list);
+ write_unlock_bh(&client->range_lock);
+
+ return 0;
+}
+
+/**
+ * acrn_ioreq_range_del() - Del an iorange monitored by an ioreq client
+ * @client: The ioreq client
+ * @type: Type (ACRN_IOREQ_TYPE_MMIO or ACRN_IOREQ_TYPE_PORTIO)
+ * @start: Start address of iorange
+ * @end: End address of iorange
+ */
+void acrn_ioreq_range_del(struct acrn_ioreq_client *client,
+ u32 type, u64 start, u64 end)
+{
+ struct acrn_ioreq_range *range;
+
+ write_lock_bh(&client->range_lock);
+ list_for_each_entry(range, &client->range_list, list) {
+ if (type == range->type &&
+ start == range->start &&
+ end == range->end) {
+ list_del(&range->list);
+ kfree(range);
+ break;
+ }
+ }
+ write_unlock_bh(&client->range_lock);
+}
+
/*
* ioreq_task() is the execution entity of handler thread of an I/O client.
* The handler callback of the I/O client is called within the handler thread.
--
2.28.0
next prev parent reply other threads:[~2020-10-19 6:20 UTC|newest]
Thread overview: 61+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-19 6:17 [PATCH v5 00/17] HSM driver for ACRN hypervisor shuo.a.liu
2020-10-19 6:17 ` [PATCH v5 01/17] docs: acrn: Introduce ACRN shuo.a.liu
2020-10-19 6:17 ` [PATCH v5 02/17] x86/acrn: Introduce acrn_{setup, remove}_intr_handler() shuo.a.liu
2020-10-19 6:17 ` [PATCH v5 03/17] x86/acrn: Introduce an API to check if a VM is privileged shuo.a.liu
2020-11-02 14:37 ` Borislav Petkov
2020-11-03 6:27 ` Shuo A Liu
2020-11-03 10:25 ` Borislav Petkov
2020-11-04 3:50 ` Shuo A Liu
2020-11-04 18:51 ` Borislav Petkov
2020-11-05 3:25 ` Shuo A Liu
2020-10-19 6:17 ` [PATCH v5 04/17] x86/acrn: Introduce hypercall interfaces shuo.a.liu
2020-10-19 21:53 ` Nick Desaulniers
2020-10-19 22:15 ` Arvind Sankar
2020-10-20 1:38 ` Shuo A Liu
2020-10-20 2:08 ` Arvind Sankar
2020-10-20 2:30 ` Shuo A Liu
2020-10-20 14:16 ` Arvind Sankar
2020-10-21 1:16 ` Shuo A Liu
2020-11-02 14:56 ` Borislav Petkov
2020-11-02 16:09 ` Segher Boessenkool
2020-11-02 17:19 ` Borislav Petkov
2020-11-02 18:10 ` Segher Boessenkool
2020-11-02 18:34 ` Borislav Petkov
2020-11-02 20:01 ` Segher Boessenkool
2020-11-02 22:54 ` Borislav Petkov
2020-11-02 23:18 ` Segher Boessenkool
2020-11-03 16:44 ` Borislav Petkov
2020-11-03 18:47 ` Segher Boessenkool
2020-11-03 19:43 ` Borislav Petkov
2020-10-19 6:17 ` [PATCH v5 05/17] virt: acrn: Introduce ACRN HSM basic driver shuo.a.liu
2020-10-19 6:17 ` [PATCH v5 06/17] virt: acrn: Introduce VM management interfaces shuo.a.liu
2020-11-04 19:02 ` Greg Kroah-Hartman
2020-11-05 3:10 ` Shuo A Liu
2020-11-05 6:29 ` Greg Kroah-Hartman
2020-11-05 7:35 ` Shuo A Liu
2020-11-05 8:26 ` Greg Kroah-Hartman
2020-11-05 9:02 ` Shuo A Liu
2020-11-05 9:16 ` Greg Kroah-Hartman
2020-11-05 12:48 ` Shuo A Liu
2020-11-05 13:04 ` Greg Kroah-Hartman
2020-10-19 6:17 ` [PATCH v5 07/17] virt: acrn: Introduce an ioctl to set vCPU registers state shuo.a.liu
2020-11-09 17:09 ` Greg Kroah-Hartman
2020-11-10 13:14 ` Shuo A Liu
2020-11-10 14:54 ` Greg Kroah-Hartman
2020-11-11 9:54 ` Shuo A Liu
2020-11-11 10:28 ` Greg Kroah-Hartman
2020-11-11 12:03 ` Shuo A Liu
2020-11-11 12:29 ` Greg Kroah-Hartman
2020-11-11 16:55 ` Shuo A Liu
2020-10-19 6:17 ` [PATCH v5 08/17] virt: acrn: Introduce EPT mapping management shuo.a.liu
2020-10-19 6:17 ` [PATCH v5 09/17] virt: acrn: Introduce I/O request management shuo.a.liu
2020-10-19 6:17 ` [PATCH v5 10/17] virt: acrn: Introduce PCI configuration space PIO accesses combiner shuo.a.liu
2020-10-19 6:17 ` [PATCH v5 11/17] virt: acrn: Introduce interfaces for PCI device passthrough shuo.a.liu
2020-10-19 6:17 ` [PATCH v5 12/17] virt: acrn: Introduce interrupt injection interfaces shuo.a.liu
2020-10-19 6:17 ` [PATCH v5 13/17] virt: acrn: Introduce interfaces to query C-states and P-states allowed by hypervisor shuo.a.liu
2020-10-19 6:18 ` shuo.a.liu [this message]
2020-10-19 6:18 ` [PATCH v5 15/17] virt: acrn: Introduce ioeventfd shuo.a.liu
2020-10-19 6:18 ` [PATCH v5 16/17] virt: acrn: Introduce irqfd shuo.a.liu
2020-10-19 6:18 ` [PATCH v5 17/17] virt: acrn: Introduce an interface for Service VM to control vCPU shuo.a.liu
2020-10-21 15:19 ` [PATCH v5 00/17] HSM driver for ACRN hypervisor Dave Hansen
2020-10-26 0:39 ` Shuo A Liu
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