Merge tag 'stable/for-linus-3.14-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip

Pull Xen bugfixes from Konrad Rzeszutek Wilk:
 "This has an healthy amount of code being removed - which we do not use
  anymore (the only user of it was ia64 Xen which had been removed
  already).  The other bug-fixes are to make Xen ARM be able to use the
  new event channel mechanism and proper export of header files to
  user-space.

  Summary:
   - Fix ARM and Xen FIFO not working.
   - Remove more Xen ia64 vestigates.
   - Fix UAPI missing Xen files"

* tag 'stable/for-linus-3.14-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
  ia64/xen: Remove Xen support for ia64 even more
  xen: install xen/gntdev.h and xen/gntalloc.h
  xen/events: bind all new interdomain events to VCPU0

3 files changed, 2 insertions, 220 deletions

diff --git a/drivers/xen/Makefile b/drivers/xen/Makefile
index d75c811bfa56..45e00afa7f2d 100644
--- a/drivers/xen/Makefile
+++ b/drivers/xen/Makefile
@@ -16,7 +16,6 @@ xen-pad-$(CONFIG_X86) += xen-acpi-pad.o
 dom0-$(CONFIG_X86) += pcpu.o
 obj-$(CONFIG_XEN_DOM0)                  += $(dom0-y)
 obj-$(CONFIG_BLOCK)                     += biomerge.o
-obj-$(CONFIG_XEN_XENCOMM)               += xencomm.o
 obj-$(CONFIG_XEN_BALLOON)               += xen-balloon.o
 obj-$(CONFIG_XEN_SELFBALLOONING)        += xen-selfballoon.o
 obj-$(CONFIG_XEN_DEV_EVTCHN)            += xen-evtchn.o
diff --git a/drivers/xen/events/events_base.c b/drivers/xen/events/events_base.c
index 4672e003c0ad..f4a9e3311297 100644
--- a/drivers/xen/events/events_base.c
+++ b/drivers/xen/events/events_base.c
@@ -862,6 +862,8 @@ int bind_evtchn_to_irq(unsigned int evtchn)
                         irq = ret;
                         goto out;
                 }
+                /* New interdomain events are bound to VCPU 0. */
+                bind_evtchn_to_cpu(evtchn, 0);
         } else {
                 struct irq_info *info = info_for_irq(irq);
                 WARN_ON(info == NULL || info->type != IRQT_EVTCHN);
diff --git a/drivers/xen/xencomm.c b/drivers/xen/xencomm.c
deleted file mode 100644
index 4793fc594549..000000000000
--- a/drivers/xen/xencomm.c
+++ /dev/null
@@ -1,219 +0,0 @@
-/*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
- *
- * Copyright (C) IBM Corp. 2006
- *
- * Authors: Hollis Blanchard <hollisb@us.ibm.com>
- */
-
-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-
-#include <linux/mm.h>
-#include <linux/slab.h>
-#include <asm/page.h>
-#include <xen/xencomm.h>
-#include <xen/interface/xen.h>
-#include <asm/xen/xencomm.h>    /* for xencomm_is_phys_contiguous() */
-
-static int xencomm_init(struct xencomm_desc *desc,
-                        void *buffer, unsigned long bytes)
-{
-        unsigned long recorded = 0;
-        int i = 0;
-
-        while ((recorded < bytes) && (i < desc->nr_addrs)) {
-                unsigned long vaddr = (unsigned long)buffer + recorded;
-                unsigned long paddr;
-                int offset;
-                int chunksz;
-
-                offset = vaddr % PAGE_SIZE; /* handle partial pages */
-                chunksz = min(PAGE_SIZE - offset, bytes - recorded);
-
-                paddr = xencomm_vtop(vaddr);
-                if (paddr == ~0UL) {
-                        printk(KERN_DEBUG "%s: couldn't translate vaddr %lx\n",
-                               __func__, vaddr);
-                        return -EINVAL;
-                }
-
-                desc->address[i++] = paddr;
-                recorded += chunksz;
-        }
-
-        if (recorded < bytes) {
-                printk(KERN_DEBUG
-                       "%s: could only translate %ld of %ld bytes\n",
-                       __func__, recorded, bytes);
-                return -ENOSPC;
-        }
-
-        /* mark remaining addresses invalid (just for safety) */
-        while (i < desc->nr_addrs)
-                desc->address[i++] = XENCOMM_INVALID;
-
-        desc->magic = XENCOMM_MAGIC;
-
-        return 0;
-}
-
-static struct xencomm_desc *xencomm_alloc(gfp_t gfp_mask,
-                                          void *buffer, unsigned long bytes)
-{
-        struct xencomm_desc *desc;
-        unsigned long buffer_ulong = (unsigned long)buffer;
-        unsigned long start = buffer_ulong & PAGE_MASK;
-        unsigned long end = (buffer_ulong + bytes) | ~PAGE_MASK;
-        unsigned long nr_addrs = (end - start + 1) >> PAGE_SHIFT;
-        unsigned long size = sizeof(*desc) +
-                sizeof(desc->address[0]) * nr_addrs;
-
-        /*
-         * slab allocator returns at least sizeof(void*) aligned pointer.
-         * When sizeof(*desc) > sizeof(void*), struct xencomm_desc might
-         * cross page boundary.
-         */
-        if (sizeof(*desc) > sizeof(void *)) {
-                unsigned long order = get_order(size);
-                desc = (struct xencomm_desc *)__get_free_pages(gfp_mask,
-                                                               order);
-                if (desc == NULL)
-                        return NULL;
-
-                desc->nr_addrs =
-                        ((PAGE_SIZE << order) - sizeof(struct xencomm_desc)) /
-                        sizeof(*desc->address);
-        } else {
-                desc = kmalloc(size, gfp_mask);
-                if (desc == NULL)
-                        return NULL;
-
-                desc->nr_addrs = nr_addrs;
-        }
-        return desc;
-}
-
-void xencomm_free(struct xencomm_handle *desc)
-{
-        if (desc && !((ulong)desc & XENCOMM_INLINE_FLAG)) {
-                struct xencomm_desc *desc__ = (struct xencomm_desc *)desc;
-                if (sizeof(*desc__) > sizeof(void *)) {
-                        unsigned long size = sizeof(*desc__) +
-                                sizeof(desc__->address[0]) * desc__->nr_addrs;
-                        unsigned long order = get_order(size);
-                        free_pages((unsigned long)__va(desc), order);
-                } else
-                        kfree(__va(desc));
-        }
-}
-
-static int xencomm_create(void *buffer, unsigned long bytes,
-                          struct xencomm_desc **ret, gfp_t gfp_mask)
-{
-        struct xencomm_desc *desc;
-        int rc;
-
-        pr_debug("%s: %p[%ld]\n", __func__, buffer, bytes);
-
-        if (bytes == 0) {
-                /* don't create a descriptor; Xen recognizes NULL. */
-                BUG_ON(buffer != NULL);
-                *ret = NULL;
-                return 0;
-        }
-
-        BUG_ON(buffer == NULL); /* 'bytes' is non-zero */
-
-        desc = xencomm_alloc(gfp_mask, buffer, bytes);
-        if (!desc) {
-                printk(KERN_DEBUG "%s failure\n", "xencomm_alloc");
-                return -ENOMEM;
-        }
-
-        rc = xencomm_init(desc, buffer, bytes);
-        if (rc) {
-                printk(KERN_DEBUG "%s failure: %d\n", "xencomm_init", rc);
-                xencomm_free((struct xencomm_handle *)__pa(desc));
-                return rc;
-        }
-
-        *ret = desc;
-        return 0;
-}
-
-static struct xencomm_handle *xencomm_create_inline(void *ptr)
-{
-        unsigned long paddr;
-
-        BUG_ON(!xencomm_is_phys_contiguous((unsigned long)ptr));
-
-        paddr = (unsigned long)xencomm_pa(ptr);
-        BUG_ON(paddr & XENCOMM_INLINE_FLAG);
-        return (struct xencomm_handle *)(paddr | XENCOMM_INLINE_FLAG);
-}
-
-/* "mini" routine, for stack-based communications: */
-static int xencomm_create_mini(void *buffer,
-        unsigned long bytes, struct xencomm_mini *xc_desc,
-        struct xencomm_desc **ret)
-{
-        int rc = 0;
-        struct xencomm_desc *desc;
-        BUG_ON(((unsigned long)xc_desc) % sizeof(*xc_desc) != 0);
-
-        desc = (void *)xc_desc;
-
-        desc->nr_addrs = XENCOMM_MINI_ADDRS;
-
-        rc = xencomm_init(desc, buffer, bytes);
-        if (!rc)
-                *ret = desc;
-
-        return rc;
-}
-
-struct xencomm_handle *xencomm_map(void *ptr, unsigned long bytes)
-{
-        int rc;
-        struct xencomm_desc *desc;
-
-        if (xencomm_is_phys_contiguous((unsigned long)ptr))
-                return xencomm_create_inline(ptr);
-
-        rc = xencomm_create(ptr, bytes, &desc, GFP_KERNEL);
-
-        if (rc || desc == NULL)
-                return NULL;
-
-        return xencomm_pa(desc);
-}
-
-struct xencomm_handle *__xencomm_map_no_alloc(void *ptr, unsigned long bytes,
-                        struct xencomm_mini *xc_desc)
-{
-        int rc;
-        struct xencomm_desc *desc = NULL;
-
-        if (xencomm_is_phys_contiguous((unsigned long)ptr))
-                return xencomm_create_inline(ptr);
-
-        rc = xencomm_create_mini(ptr, bytes, xc_desc,
-                                &desc);
-
-        if (rc)
-                return NULL;
-
-        return xencomm_pa(desc);
-}