xen: use generic functions instead of xen_{alloc, free}_vm_area()
Replace calls to the Xen-specific xen_alloc_vm_area() and xen_free_vm_area() functions with the generic equivalent (alloc_vm_area() and free_vm_area()). On x86, these were identical already. Signed-off-by: David Vrabel <david.vrabel@citrix.com> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
This commit is contained in:
David Vrabel
Konrad Rzeszutek Wilk
parent
a102a9ece5
commit
4dcaebbf65
6 changed files with 4 additions and 103 deletions
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@ -1,29 +0,0 @@
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/******************************************************************************
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* arch/ia64/include/asm/xen/grant_table.h
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*
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* Copyright (c) 2008 Isaku Yamahata <yamahata at valinux co jp>
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* VA Linux Systems Japan K.K.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#ifndef _ASM_IA64_XEN_GRANT_TABLE_H
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#define _ASM_IA64_XEN_GRANT_TABLE_H
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struct vm_struct *xen_alloc_vm_area(unsigned long size);
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void xen_free_vm_area(struct vm_struct *area);
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#endif /* _ASM_IA64_XEN_GRANT_TABLE_H */
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@ -31,68 +31,6 @@
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#include <asm/xen/hypervisor.h>
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struct vm_struct *xen_alloc_vm_area(unsigned long size)
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{
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int order;
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unsigned long virt;
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unsigned long nr_pages;
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struct vm_struct *area;
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order = get_order(size);
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virt = __get_free_pages(GFP_KERNEL, order);
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if (virt == 0)
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goto err0;
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nr_pages = 1 << order;
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scrub_pages(virt, nr_pages);
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area = kmalloc(sizeof(*area), GFP_KERNEL);
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if (area == NULL)
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goto err1;
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area->flags = VM_IOREMAP;
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area->addr = (void *)virt;
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area->size = size;
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area->pages = NULL;
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area->nr_pages = nr_pages;
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area->phys_addr = 0; /* xenbus_map_ring_valloc uses this field! */
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return area;
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err1:
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free_pages(virt, order);
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err0:
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return NULL;
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}
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EXPORT_SYMBOL_GPL(xen_alloc_vm_area);
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void xen_free_vm_area(struct vm_struct *area)
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{
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unsigned int order = get_order(area->size);
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unsigned long i;
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unsigned long phys_addr = __pa(area->addr);
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/* This area is used for foreign page mappping.
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* So underlying machine page may not be assigned. */
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for (i = 0; i < (1 << order); i++) {
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unsigned long ret;
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unsigned long gpfn = (phys_addr >> PAGE_SHIFT) + i;
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struct xen_memory_reservation reservation = {
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.nr_extents = 1,
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.address_bits = 0,
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.extent_order = 0,
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.domid = DOMID_SELF
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};
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set_xen_guest_handle(reservation.extent_start, &gpfn);
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ret = HYPERVISOR_memory_op(XENMEM_populate_physmap,
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&reservation);
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BUG_ON(ret != 1);
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}
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free_pages((unsigned long)area->addr, order);
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kfree(area);
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}
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EXPORT_SYMBOL_GPL(xen_free_vm_area);
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/****************************************************************************
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* grant table hack
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* cmd: GNTTABOP_xxx
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@ -1,7 +0,0 @@
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#ifndef _ASM_X86_XEN_GRANT_TABLE_H
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#define _ASM_X86_XEN_GRANT_TABLE_H
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#define xen_alloc_vm_area(size) alloc_vm_area(size)
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#define xen_free_vm_area(area) free_vm_area(area)
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#endif /* _ASM_X86_XEN_GRANT_TABLE_H */
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@ -71,7 +71,7 @@ int arch_gnttab_map_shared(unsigned long *frames, unsigned long nr_gframes,
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if (shared == NULL) {
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struct vm_struct *area =
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xen_alloc_vm_area(PAGE_SIZE * max_nr_gframes);
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alloc_vm_area(PAGE_SIZE * max_nr_gframes);
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BUG_ON(area == NULL);
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shared = area->addr;
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*__shared = shared;
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@ -443,7 +443,7 @@ int xenbus_map_ring_valloc(struct xenbus_device *dev, int gnt_ref, void **vaddr)
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*vaddr = NULL;
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area = xen_alloc_vm_area(PAGE_SIZE);
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area = alloc_vm_area(PAGE_SIZE);
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if (!area)
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return -ENOMEM;
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@ -453,7 +453,7 @@ int xenbus_map_ring_valloc(struct xenbus_device *dev, int gnt_ref, void **vaddr)
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BUG();
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if (op.status != GNTST_okay) {
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xen_free_vm_area(area);
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free_vm_area(area);
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xenbus_dev_fatal(dev, op.status,
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"mapping in shared page %d from domain %d",
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gnt_ref, dev->otherend_id);
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@ -552,7 +552,7 @@ int xenbus_unmap_ring_vfree(struct xenbus_device *dev, void *vaddr)
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BUG();
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if (op.status == GNTST_okay)
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xen_free_vm_area(area);
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free_vm_area(area);
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else
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xenbus_dev_error(dev, op.status,
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"unmapping page at handle %d error %d",
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@ -43,7 +43,6 @@
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#include <xen/interface/grant_table.h>
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#include <asm/xen/hypervisor.h>
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#include <asm/xen/grant_table.h>
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#include <xen/features.h>
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