C++ HYPERVISOR_grant_table_op函数代码示例

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本文整理汇总了C++中HYPERVISOR_grant_table_op函数的典型用法代码示例。如果您正苦于以下问题：C++ HYPERVISOR_grant_table_op函数的具体用法？C++ HYPERVISOR_grant_table_op怎么用？C++ HYPERVISOR_grant_table_op使用的例子？那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。

在下文中一共展示了HYPERVISOR_grant_table_op函数的20个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于我们的系统推荐出更棒的C++代码示例。

示例1: map_frontend_pages

/*
 * map  one page for ring
 */
static int map_frontend_pages(struct xen_chrif *chrif, grant_ref_t ring_ref)
{
	struct gnttab_map_grant_ref op;
    gnttab_set_map_op(&op, (unsigned long)chrif->comms_area->addr, GNTMAP_host_map, ring_ref, chrif->domid);
   
	if(HYPERVISOR_grant_table_op(GNTTABOP_map_grant_ref, &op, 1)){
       	printk(KERN_DEBUG "\nxen: dom0: HYPERVISOR map grant ref failed");
        return -EFAULT;
    }

    if (op.status) {
		struct gnttab_unmap_grant_ref unop;
		gnttab_set_unmap_op(&unop, (unsigned long)chrif->comms_area->addr, GNTMAP_host_map, op.handle);
		HYPERVISOR_grant_table_op(GNTTABOP_unmap_grant_ref, &unop, 1);
        printk(KERN_DEBUG "\nxen: dom0: op.status fail");
        return op.status;
    }

	/* record ring_ref and handle */
	chrif->shmem_ref = ring_ref;
	chrif->shmem_handle = op.handle;
    
	printk(KERN_DEBUG "\nxen: dom0: map page success, page=%x, handle = %x, status = %x", 
        (unsigned int)chrif->comms_area->addr, op.handle, op.status);
    
    printk("\nxen: dom0: map frontend pages finished,otherend_id");
	return 0;
}

开发者ID:huier103，项目名称:virtual，代码行数:31，代码来源:dom0.c

示例2: alloc_tube

tube_t *tube_attach(domid_t peer_domid,
		uint32_t page_ref, uint32_t peer_port_rx, uint32_t peer_port_tx, void *data)
{
	tube_t *tb = alloc_tube(0);
	if (tb == 0)
		return 0;
	tube_shared_t *page = tb->page;

	tb->page_map.ref = page_ref;
	tb->page_map.dom = peer_domid;
	tb->page_map.flags = GNTMAP_host_map;
	tb->page_map.host_addr = (uint64_t)page;
	int rs = HYPERVISOR_grant_table_op(GNTTABOP_map_grant_ref, &tb->page_map, 1);
	assert(rs == 0);
	assert(tb->page_map.status == GNTST_okay);

	for (int i = 0; i < TUBE_SLOTS; i++)
	{
		struct gnttab_map_grant_ref *m = &tb->bufs_map[i];
		m->ref = page->tx.slots[i].gref;
		m->dom = peer_domid;
		m->flags = GNTMAP_host_map;
		m->host_addr = (uint64_t)tb->tx_buffers[i];
	}
	for (int i = 0; i < TUBE_SLOTS; i++)
	{
		struct gnttab_map_grant_ref *m = &tb->bufs_map[i+TUBE_SLOTS];
		m->ref = page->rx.slots[i].gref;
		m->dom = peer_domid;
		m->flags = GNTMAP_host_map;
		m->host_addr = (uint64_t)tb->rx_buffers[i];
	}
	
	rs = HYPERVISOR_grant_table_op(GNTTABOP_map_grant_ref, tb->bufs_map, 2*TUBE_SLOTS);
	assert(rs == 0);
	for (int i = 0; i < 2*TUBE_SLOTS; i++)
	{
		assert(tb->bufs_map[i].status == GNTST_okay);
		rmb();	//dark
	}

	tb->evtchn_tx = event_bind_interdomain(peer_domid, peer_port_tx);
	tb->evtchn_rx = event_bind_interdomain(peer_domid, peer_port_rx);

	event_bind(tb->evtchn_rx, tube_int, data);
	event_bind(tb->evtchn_tx, tube_send_int, data);

	return tb;
}

开发者ID:EarlGray，项目名称:ling，代码行数:49，代码来源:tube.c

示例3: gnttab_map_refs

int gnttab_map_refs(struct gnttab_map_grant_ref *map_ops,
		    struct gnttab_map_grant_ref *kmap_ops,
		    struct page **pages, unsigned int count)
{
	int i, ret;

	ret = HYPERVISOR_grant_table_op(GNTTABOP_map_grant_ref, map_ops, count);
	if (ret)
		return ret;

	for (i = 0; i < count; i++) {
		/* Retry eagain maps */
		if (map_ops[i].status == GNTST_eagain)
			gnttab_retry_eagain_gop(GNTTABOP_map_grant_ref, map_ops + i,
						&map_ops[i].status, __func__);

		if (map_ops[i].status == GNTST_okay) {
			struct xen_page_foreign *foreign;

			SetPageForeign(pages[i]);
			foreign = xen_page_foreign(pages[i]);
			foreign->domid = map_ops[i].dom;
			foreign->gref = map_ops[i].ref;
		}
	}

	return set_foreign_p2m_mapping(map_ops, kmap_ops, pages, count);
}

开发者ID:DenisLug，项目名称:mptcp，代码行数:28，代码来源:grant-table.c

示例4: unmap_ring_vfree

static int unmap_ring_vfree(struct xenbus_device *dev, struct vm_struct *area,
			    unsigned int nr, grant_handle_t handles[])
{
	unsigned int i;
	int err = 0;

	for (i = 0; i < nr; ++i) {
		struct gnttab_unmap_grant_ref op;

		gnttab_set_unmap_op(&op,
				    (unsigned long)area->addr + i * PAGE_SIZE,
				    GNTMAP_host_map, handles[i]);

		if (HYPERVISOR_grant_table_op(GNTTABOP_unmap_grant_ref,
					      &op, 1))
			BUG();
		if (op.status == GNTST_okay)
			continue;

		xenbus_dev_error(dev, op.status,
				 "unmapping page %u (handle %#x)",
				 i, handles[i]);
		err = -EINVAL;
	}

	if (!err) {
		free_vm_area(area);
		kfree(handles);
	}

	return err;
}

开发者ID:Jinjian0609，项目名称:UVP-Tools，代码行数:32，代码来源:xenbus_backend_client.c

示例5: grants_init

void grants_init(void)
{
	unsigned long frames[NR_GRANT_PAGES];

	gnttab_setup_table_t op;
	op.dom = DOMID_SELF;
	op.nr_frames = NR_GRANT_PAGES;
	set_xen_guest_handle(op.frame_list, frames);
	int rs = HYPERVISOR_grant_table_op(GNTTABOP_setup_table, &op, 1);
	if (rs < 0)
		fatal_error("grants_init: setup_table failed: %d\n", rs);

	for (int i = NR_GRANT_ENTRIES-1; i >= NR_RESERVED_ENTRIES; i--)
	{
		free_list[i] = free_entry;
		free_entry = i;
	}

	grant_entries = mm_alloc_pages(NR_GRANT_PAGES);
	if (grant_entries == 0)
		fatal_error("grants_init: grant entries page allocation failed\n");
	for (int i = 0; i < NR_GRANT_PAGES; i++)
	{
		unsigned long ma_grant_table = frames[i] << PAGE_SHIFT;
		rs = HYPERVISOR_update_va_mapping((unsigned long)grant_entries + i*PAGE_SIZE,
			__pte(ma_grant_table | 7), UVMF_INVLPG);
		if (rs < 0)
			fatal_error("grants_init: update mapping failed: %d\n", rs);
	}
}

开发者ID:EarlGray，项目名称:ling，代码行数:30，代码来源:grant.c

示例6: gnttab_request_version

static void gnttab_request_version(void)
{
	int rc;
	struct gnttab_set_version gsv;

	gsv.version = 1;

	rc = HYPERVISOR_grant_table_op(GNTTABOP_set_version, &gsv, 1);
	if (rc == 0 && gsv.version == 2) {
		grant_table_version = 2;
		grefs_per_grant_frame = PAGE_SIZE / sizeof(union grant_entry_v2);
		gnttab_interface = &gnttab_v2_ops;
	} else if (grant_table_version == 2) {
		/*
		 * If we've already used version 2 features,
		 * but then suddenly discover that they're not
		 * available (e.g. migrating to an older
		 * version of Xen), almost unbounded badness
		 * can happen.
		 */
		panic("we need grant tables version 2, but only version 1 is available");
	} else {
		grant_table_version = 1;
		grefs_per_grant_frame = PAGE_SIZE / sizeof(struct grant_entry_v1);
		gnttab_interface = &gnttab_v1_ops;
	}
	pr_info("Grant tables using version %d layout\n", grant_table_version);
}

开发者ID:7799，项目名称:linux，代码行数:28，代码来源:grant-table.c

示例7: gnttab_request_version

static void gnttab_request_version(void)
{
	int rc;
	struct gnttab_set_version gsv;

	if (xen_hvm_domain())
		gsv.version = 1;
	else
		gsv.version = 2;
	rc = HYPERVISOR_grant_table_op(GNTTABOP_set_version, &gsv, 1);
	if (rc == 0 && gsv.version == 2) {
		grant_table_version = 2;
		gnttab_interface = &gnttab_v2_ops;
	} else if (grant_table_version == 2) {
		/*
		 * If we've already used version 2 features,
		 * but then suddenly discover that they're not
		 * available (e.g. migrating to an older
		 * version of Xen), almost unbounded badness
		 * can happen.
		 */
		panic("we need grant tables version 2, but only version 1 is available");
	} else {
		grant_table_version = 1;
		gnttab_interface = &gnttab_v1_ops;
	}
	printk(KERN_INFO "Grant tables using version %d layout.\n",
		grant_table_version);
}

开发者ID:ARMWorks，项目名称:FA_2451_Linux_Kernel，代码行数:29，代码来源:grant-table.c

示例8: gnttab_map

static int gnttab_map(unsigned int start_idx, unsigned int end_idx)
{
	struct gnttab_setup_table setup;
	unsigned long *frames;
	unsigned int nr_gframes = end_idx + 1;
	int rc;

	frames = kmalloc(nr_gframes * sizeof(unsigned long), GFP_ATOMIC);
	if (!frames)
		return -ENOMEM;

	setup.dom        = DOMID_SELF;
	setup.nr_frames  = nr_gframes;
	set_xen_guest_handle(setup.frame_list, frames);

	rc = HYPERVISOR_grant_table_op(GNTTABOP_setup_table, &setup, 1);
	if (rc == -ENOSYS) {
		kfree(frames);
		return -ENOSYS;
	}

	BUG_ON(rc || setup.status);

	rc = arch_gnttab_map_shared(frames, nr_gframes, max_nr_grant_frames(),
				    &shared);
	BUG_ON(rc);

	kfree(frames);

	return 0;
}

开发者ID:mikuhatsune001，项目名称:linux-2.6，代码行数:31，代码来源:grant-table.c

示例9: gnttab_unmap_refs

int gnttab_unmap_refs(struct gnttab_unmap_grant_ref *unmap_ops,
		      struct gnttab_map_grant_ref *kmap_ops,
		      struct page **pages, unsigned int count)
{
	int i, ret;
	bool lazy = false;

	ret = HYPERVISOR_grant_table_op(GNTTABOP_unmap_grant_ref, unmap_ops, count);
	if (ret)
		return ret;

	if (xen_feature(XENFEAT_auto_translated_physmap))
		return ret;

	if (!in_interrupt() && paravirt_get_lazy_mode() == PARAVIRT_LAZY_NONE) {
		arch_enter_lazy_mmu_mode();
		lazy = true;
	}

	for (i = 0; i < count; i++) {
		ret = m2p_remove_override(pages[i], kmap_ops ?
				       &kmap_ops[i] : NULL);
		if (ret)
			return ret;
	}

	if (lazy)
		arch_leave_lazy_mmu_mode();

	return ret;
}

开发者ID:ARMWorks，项目名称:FA_2451_Linux_Kernel，代码行数:31，代码来源:grant-table.c

示例10: gnttab_map_refs

int gnttab_map_refs(struct gnttab_map_grant_ref *map_ops,
		    struct gnttab_map_grant_ref *kmap_ops,
		    struct page **pages, unsigned int count)
{
	int i, ret;
	pte_t *pte;
	unsigned long mfn;

	ret = HYPERVISOR_grant_table_op(GNTTABOP_map_grant_ref, map_ops, count);
	if (ret)
		return ret;

	if (xen_feature(XENFEAT_auto_translated_physmap))
		return ret;

	for (i = 0; i < count; i++) {
		/* Do not add to override if the map failed. */
		if (map_ops[i].status)
			continue;

		if (map_ops[i].flags & GNTMAP_contains_pte) {
			pte = (pte_t *) (mfn_to_virt(PFN_DOWN(map_ops[i].host_addr)) +
				(map_ops[i].host_addr & ~PAGE_MASK));
			mfn = pte_mfn(*pte);
		} else {
			mfn = PFN_DOWN(map_ops[i].dev_bus_addr);
		}
		ret = m2p_add_override(mfn, pages[i], kmap_ops ?
				       &kmap_ops[i] : NULL);
		if (ret)
			return ret;
	}

	return ret;
}

开发者ID:0xroot，项目名称:Blackphone-BP1-Kernel，代码行数:35，代码来源:grant-table.c

示例11: map

grant_handle_t map(domid_t friend, 
		unsigned int entry, 
		void * shared_page, 
		grant_handle_t * handle)
{
	/* Set up the mapping operation */
	gnttab_map_grant_ref_t map_op;
	map_op.host_addr = shared_page;
	map_op.flags = GNTMAP_host_map;
	map_op.ref = entry;
	map_op.dom = friend;
	/* Perform the map */
	HYPERVISOR_grant_table_op(GNTTABOP_map_grant_ref, &op,1);
	/* Check if it worked */
	if(map_op.status != GNTST_okay)
	{
		return -1;
	}
	else 
	{
		/* Return the handle */
		*handle = map_op.handle;
		return 0;
	}
}

开发者ID:AnilVarmaBiruduraju，项目名称:xen-examples，代码行数:25，代码来源:mapping.c

示例12: clear_foreign_p2m_mapping

int clear_foreign_p2m_mapping(struct gnttab_unmap_grant_ref *unmap_ops,
			      struct gnttab_unmap_grant_ref *kunmap_ops,
			      struct page **pages, unsigned int count)
{
	int i, ret = 0;

	if (xen_feature(XENFEAT_auto_translated_physmap))
		return 0;

	for (i = 0; i < count; i++) {
		unsigned long mfn = __pfn_to_mfn(page_to_pfn(pages[i]));
		unsigned long pfn = page_to_pfn(pages[i]);

		if (mfn == INVALID_P2M_ENTRY || !(mfn & FOREIGN_FRAME_BIT)) {
			ret = -EINVAL;
			goto out;
		}

		set_phys_to_machine(pfn, INVALID_P2M_ENTRY);
	}
	if (kunmap_ops)
		ret = HYPERVISOR_grant_table_op(GNTTABOP_unmap_grant_ref,
						kunmap_ops, count);
out:
	return ret;
}

开发者ID:DenisLug，项目名称:mptcp，代码行数:26，代码来源:p2m.c

示例13: _gntmap_map_grant_ref

static int
_gntmap_map_grant_ref(struct gntmap_entry *entry, 
                      unsigned long host_addr,
                      uint32_t domid,
                      uint32_t ref,
                      int writable)
{
    struct gnttab_map_grant_ref op;
    int rc;

    op.ref = (grant_ref_t) ref;
    op.dom = (domid_t) domid;
    op.host_addr = (uint64_t) host_addr;
    op.flags = GNTMAP_host_map;
    if (!writable)
        op.flags |= GNTMAP_readonly;

    rc = HYPERVISOR_grant_table_op(GNTTABOP_map_grant_ref, &op, 1);
    if (rc != 0 || op.status != GNTST_okay) {
        printk("GNTTABOP_map_grant_ref failed: "
               "returned %d, status %" PRId16 "\n",
               rc, op.status);
        return rc != 0 ? rc : op.status;
    }

    entry->host_addr = host_addr;
    entry->handle = op.handle;
    return 0;
}

开发者ID:a2k2，项目名称:xen-unstable，代码行数:29，代码来源:gntmap.c

示例14: map_frontend_page

static int map_frontend_page( struct vscsibk_info *info,
				unsigned long ring_ref)
{
	struct gnttab_map_grant_ref op;
	int err;

	gnttab_set_map_op(&op, (unsigned long)info->ring_area->addr,
				GNTMAP_host_map, ring_ref,
				info->domid);

    do {
	    err = HYPERVISOR_grant_table_op(GNTTABOP_map_grant_ref, &op, 1);
	    BUG_ON(err);
        msleep(10);
    } while(op.status == GNTST_eagain);

	if (op.status) {
		printk(KERN_ERR "scsiback: Grant table operation failure !\n");
		return op.status;
	}

	info->shmem_ref    = ring_ref;
	info->shmem_handle = op.handle;

	return (GNTST_okay);
}

开发者ID:AsadRaza，项目名称:OCTEON-Linux，代码行数:26，代码来源:interface.c

示例15: gnttab_map

static int gnttab_map(unsigned int start_idx, unsigned int end_idx)
{
	struct gnttab_setup_table setup;
	unsigned long *frames;
	unsigned int nr_gframes = end_idx + 1;
	int rc;

	if (xen_hvm_domain()) {
		struct xen_add_to_physmap xatp;
		unsigned int i = end_idx;
		rc = 0;
		/*
		 * Loop backwards, so that the first hypercall has the largest
		 * index, ensuring that the table will grow only once.
		 */
		do {
			xatp.domid = DOMID_SELF;
			xatp.idx = i;
			xatp.space = XENMAPSPACE_grant_table;
			xatp.gpfn = (xen_hvm_resume_frames >> PAGE_SHIFT) + i;
			rc = HYPERVISOR_memory_op(XENMEM_add_to_physmap, &xatp);
			if (rc != 0) {
#ifdef CONFIG_DEBUG_PRINTK
				printk(KERN_WARNING
						"grant table add_to_physmap failed, err=%d\n", rc);
#else
				;
#endif
				break;
			}
		} while (i-- > start_idx);

		return rc;
	}

	frames = kmalloc(nr_gframes * sizeof(unsigned long), GFP_ATOMIC);
	if (!frames)
		return -ENOMEM;

	setup.dom        = DOMID_SELF;
	setup.nr_frames  = nr_gframes;
	set_xen_guest_handle(setup.frame_list, frames);

	rc = HYPERVISOR_grant_table_op(GNTTABOP_setup_table, &setup, 1);
	if (rc == -ENOSYS) {
		kfree(frames);
		return -ENOSYS;
	}

	BUG_ON(rc || setup.status);

	rc = arch_gnttab_map_shared(frames, nr_gframes, gnttab_max_grant_frames(),
				    &shared);
	BUG_ON(rc);

	kfree(frames);

	return 0;
}

开发者ID:nos1609，项目名称:Chrono_Kernel-1，代码行数:59，代码来源:grant-table.c

示例16: gnttab_map

static int gnttab_map(unsigned int start_idx, unsigned int end_idx)
{
	struct gnttab_setup_table setup;
	xen_pfn_t *frames;
	unsigned int nr_gframes = end_idx + 1;
	int rc;

	if (xen_feature(XENFEAT_auto_translated_physmap)) {
		struct xen_add_to_physmap xatp;
		unsigned int i = end_idx;
		rc = 0;
		BUG_ON(xen_auto_xlat_grant_frames.count < nr_gframes);
		/*
		 * Loop backwards, so that the first hypercall has the largest
		 * index, ensuring that the table will grow only once.
		 */
		do {
			xatp.domid = DOMID_SELF;
			xatp.idx = i;
			xatp.space = XENMAPSPACE_grant_table;
			xatp.gpfn = xen_auto_xlat_grant_frames.pfn[i];
			rc = HYPERVISOR_memory_op(XENMEM_add_to_physmap, &xatp);
			if (rc != 0) {
				pr_warn("grant table add_to_physmap failed, err=%d\n",
					rc);
				break;
			}
		} while (i-- > start_idx);

		return rc;
	}

	/* No need for kzalloc as it is initialized in following hypercall
	 * GNTTABOP_setup_table.
	 */
	frames = kmalloc(nr_gframes * sizeof(unsigned long), GFP_ATOMIC);
	if (!frames)
		return -ENOMEM;

	setup.dom        = DOMID_SELF;
	setup.nr_frames  = nr_gframes;
	set_xen_guest_handle(setup.frame_list, frames);

	rc = HYPERVISOR_grant_table_op(GNTTABOP_setup_table, &setup, 1);
	if (rc == -ENOSYS) {
		kfree(frames);
		return -ENOSYS;
	}

	BUG_ON(rc || setup.status);

	rc = gnttab_interface->map_frames(frames, nr_gframes);

	kfree(frames);

	return rc;
}

开发者ID:DenisLug，项目名称:mptcp，代码行数:57，代码来源:grant-table.c

示例17: fini_gnttab

void
fini_gnttab(void)
{
    struct gnttab_setup_table setup;

    setup.dom = DOMID_SELF;
    setup.nr_frames = 0;

    HYPERVISOR_grant_table_op(GNTTABOP_setup_table, &setup, 1);
}

开发者ID:a2k2，项目名称:xen-unstable，代码行数:10，代码来源:gnttab.c

示例18: unmap_frontend_page

static void unmap_frontend_page(struct xen_blkif *blkif)
{
	struct gnttab_unmap_grant_ref op;

	gnttab_set_unmap_op(&op, (unsigned long)blkif->blk_ring_area->addr,
			    GNTMAP_host_map, blkif->shmem_handle);

	if (HYPERVISOR_grant_table_op(GNTTABOP_unmap_grant_ref, &op, 1))
		BUG();
}

开发者ID:jthatch12，项目名称:STi，代码行数:10，代码来源:xenbus.c

示例19: xen_map_gref

/*ARGSUSED*/
int
xen_map_gref(uint_t cmd, gnttab_map_grant_ref_t *mapop, uint_t count,
    boolean_t uvaddr)
{
	long rc;

	ASSERT(cmd == GNTTABOP_map_grant_ref);
	rc = HYPERVISOR_grant_table_op(cmd, mapop, count);

	return (rc);
}

开发者ID:bahamas10，项目名称:openzfs，代码行数:12，代码来源:xpv_support.c

示例20: gnttab_batch_copy

void gnttab_batch_copy(struct gnttab_copy *batch, unsigned count)
{
	struct gnttab_copy *op;

	if (HYPERVISOR_grant_table_op(GNTTABOP_copy, batch, count))
		BUG();
	for (op = batch; op < batch + count; op++)
		if (op->status == GNTST_eagain)
			gnttab_retry_eagain_gop(GNTTABOP_copy, op,
						&op->status, __func__);
}

开发者ID:DenisLug，项目名称:mptcp，代码行数:11，代码来源:grant-table.c

注：本文中的HYPERVISOR_grant_table_op函数示例由纯净天空整理自Github/MSDocs等源码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。

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C++ HYPERVISOR_grant_table_op函数代码示例

示例1: map_frontend_pages

示例2: alloc_tube

示例3: gnttab_map_refs

示例4: unmap_ring_vfree

示例5: grants_init

示例6: gnttab_request_version

示例7: gnttab_request_version

示例8: gnttab_map

示例9: gnttab_unmap_refs

示例10: gnttab_map_refs

示例11: map

示例12: clear_foreign_p2m_mapping

示例13: _gntmap_map_grant_ref

示例14: map_frontend_page

示例15: gnttab_map

示例16: gnttab_map

示例17: fini_gnttab

示例18: unmap_frontend_page

示例19: xen_map_gref

示例20: gnttab_batch_copy

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