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https://github.com/edk2-porting/linux-next.git
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4dcaebbf65
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>
95 lines
2.6 KiB
C
95 lines
2.6 KiB
C
/******************************************************************************
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* arch/ia64/xen/grant-table.c
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*
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* Copyright (c) 2006 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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#include <linux/module.h>
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#include <linux/vmalloc.h>
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#include <linux/slab.h>
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#include <linux/mm.h>
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#include <xen/interface/xen.h>
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#include <xen/interface/memory.h>
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#include <xen/grant_table.h>
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#include <asm/xen/hypervisor.h>
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/****************************************************************************
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* grant table hack
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* cmd: GNTTABOP_xxx
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*/
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int arch_gnttab_map_shared(unsigned long *frames, unsigned long nr_gframes,
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unsigned long max_nr_gframes,
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struct grant_entry **__shared)
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{
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*__shared = __va(frames[0] << PAGE_SHIFT);
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return 0;
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}
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void arch_gnttab_unmap_shared(struct grant_entry *shared,
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unsigned long nr_gframes)
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{
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/* nothing */
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}
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static void
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gnttab_map_grant_ref_pre(struct gnttab_map_grant_ref *uop)
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{
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uint32_t flags;
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flags = uop->flags;
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if (flags & GNTMAP_host_map) {
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if (flags & GNTMAP_application_map) {
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printk(KERN_DEBUG
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"GNTMAP_application_map is not supported yet: "
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"flags 0x%x\n", flags);
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BUG();
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}
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if (flags & GNTMAP_contains_pte) {
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printk(KERN_DEBUG
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"GNTMAP_contains_pte is not supported yet: "
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"flags 0x%x\n", flags);
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BUG();
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}
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} else if (flags & GNTMAP_device_map) {
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printk("GNTMAP_device_map is not supported yet 0x%x\n", flags);
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BUG(); /* not yet. actually this flag is not used. */
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} else {
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BUG();
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}
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}
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int
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HYPERVISOR_grant_table_op(unsigned int cmd, void *uop, unsigned int count)
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{
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if (cmd == GNTTABOP_map_grant_ref) {
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unsigned int i;
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for (i = 0; i < count; i++) {
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gnttab_map_grant_ref_pre(
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(struct gnttab_map_grant_ref *)uop + i);
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}
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}
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return xencomm_hypercall_grant_table_op(cmd, uop, count);
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}
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EXPORT_SYMBOL(HYPERVISOR_grant_table_op);
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