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-rw-r--r--drivers/xen/Kconfig2
-rw-r--r--drivers/xen/Makefile1
-rw-r--r--drivers/xen/balloon.c3
-rw-r--r--drivers/xen/dbgp.c2
-rw-r--r--drivers/xen/events.c6
-rw-r--r--drivers/xen/fallback.c80
-rw-r--r--drivers/xen/gntdev.c36
-rw-r--r--drivers/xen/grant-table.c8
-rw-r--r--drivers/xen/privcmd.c18
-rw-r--r--drivers/xen/sys-hypervisor.c4
-rw-r--r--drivers/xen/xen-pciback/vpci.c14
-rw-r--r--drivers/xen/xenbus/xenbus_dev_frontend.c2
-rw-r--r--drivers/xen/xenbus/xenbus_xs.c4
13 files changed, 142 insertions, 38 deletions
diff --git a/drivers/xen/Kconfig b/drivers/xen/Kconfig
index d4dffcd52873..126d8ce591ce 100644
--- a/drivers/xen/Kconfig
+++ b/drivers/xen/Kconfig
@@ -3,6 +3,7 @@ menu "Xen driver support"
config XEN_BALLOON
bool "Xen memory balloon driver"
+ depends on !ARM
default y
help
The balloon driver allows the Xen domain to request more memory from
@@ -145,6 +146,7 @@ config SWIOTLB_XEN
config XEN_TMEM
bool
+ depends on !ARM
default y if (CLEANCACHE || FRONTSWAP)
help
Shim to interface in-kernel Transcendent Memory hooks
diff --git a/drivers/xen/Makefile b/drivers/xen/Makefile
index 0e8637035457..74354708c6c4 100644
--- a/drivers/xen/Makefile
+++ b/drivers/xen/Makefile
@@ -2,6 +2,7 @@ ifneq ($(CONFIG_ARM),y)
obj-y += manage.o balloon.o
obj-$(CONFIG_HOTPLUG_CPU) += cpu_hotplug.o
endif
+obj-$(CONFIG_X86) += fallback.o
obj-y += grant-table.o features.o events.o
obj-y += xenbus/
diff --git a/drivers/xen/balloon.c b/drivers/xen/balloon.c
index 31ab82fda38a..d6886d90ccfd 100644
--- a/drivers/xen/balloon.c
+++ b/drivers/xen/balloon.c
@@ -55,7 +55,6 @@
#include <asm/pgalloc.h>
#include <asm/pgtable.h>
#include <asm/tlb.h>
-#include <asm/e820.h>
#include <asm/xen/hypervisor.h>
#include <asm/xen/hypercall.h>
@@ -88,7 +87,7 @@ struct balloon_stats balloon_stats;
EXPORT_SYMBOL_GPL(balloon_stats);
/* We increase/decrease in batches which fit in a page */
-static unsigned long frame_list[PAGE_SIZE / sizeof(unsigned long)];
+static xen_pfn_t frame_list[PAGE_SIZE / sizeof(unsigned long)];
#ifdef CONFIG_HIGHMEM
#define inc_totalhigh_pages() (totalhigh_pages++)
diff --git a/drivers/xen/dbgp.c b/drivers/xen/dbgp.c
index 42569c77ccc8..f3ccc80a455f 100644
--- a/drivers/xen/dbgp.c
+++ b/drivers/xen/dbgp.c
@@ -8,7 +8,9 @@
static int xen_dbgp_op(struct usb_hcd *hcd, int op)
{
+#ifdef CONFIG_PCI
const struct device *ctrlr = hcd_to_bus(hcd)->controller;
+#endif
struct physdev_dbgp_op dbgp;
if (!xen_initial_domain())
diff --git a/drivers/xen/events.c b/drivers/xen/events.c
index 59e10a1286d5..0be4df39e953 100644
--- a/drivers/xen/events.c
+++ b/drivers/xen/events.c
@@ -115,7 +115,9 @@ struct irq_info {
#define PIRQ_SHAREABLE (1 << 1)
static int *evtchn_to_irq;
+#ifdef CONFIG_X86
static unsigned long *pirq_eoi_map;
+#endif
static bool (*pirq_needs_eoi)(unsigned irq);
static DEFINE_PER_CPU(unsigned long [NR_EVENT_CHANNELS/BITS_PER_LONG],
@@ -277,10 +279,12 @@ static unsigned int cpu_from_evtchn(unsigned int evtchn)
return ret;
}
+#ifdef CONFIG_X86
static bool pirq_check_eoi_map(unsigned irq)
{
return test_bit(pirq_from_irq(irq), pirq_eoi_map);
}
+#endif
static bool pirq_needs_eoi_flag(unsigned irq)
{
@@ -1391,10 +1395,10 @@ void xen_evtchn_do_upcall(struct pt_regs *regs)
{
struct pt_regs *old_regs = set_irq_regs(regs);
+ irq_enter();
#ifdef CONFIG_X86
exit_idle();
#endif
- irq_enter();
__xen_evtchn_do_upcall();
diff --git a/drivers/xen/fallback.c b/drivers/xen/fallback.c
new file mode 100644
index 000000000000..0ef7c4d40f86
--- /dev/null
+++ b/drivers/xen/fallback.c
@@ -0,0 +1,80 @@
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <linux/bug.h>
+#include <linux/export.h>
+#include <asm/hypervisor.h>
+#include <asm/xen/hypercall.h>
+
+int xen_event_channel_op_compat(int cmd, void *arg)
+{
+ struct evtchn_op op;
+ int rc;
+
+ op.cmd = cmd;
+ memcpy(&op.u, arg, sizeof(op.u));
+ rc = _hypercall1(int, event_channel_op_compat, &op);
+
+ switch (cmd) {
+ case EVTCHNOP_close:
+ case EVTCHNOP_send:
+ case EVTCHNOP_bind_vcpu:
+ case EVTCHNOP_unmask:
+ /* no output */
+ break;
+
+#define COPY_BACK(eop) \
+ case EVTCHNOP_##eop: \
+ memcpy(arg, &op.u.eop, sizeof(op.u.eop)); \
+ break
+
+ COPY_BACK(bind_interdomain);
+ COPY_BACK(bind_virq);
+ COPY_BACK(bind_pirq);
+ COPY_BACK(status);
+ COPY_BACK(alloc_unbound);
+ COPY_BACK(bind_ipi);
+#undef COPY_BACK
+
+ default:
+ WARN_ON(rc != -ENOSYS);
+ break;
+ }
+
+ return rc;
+}
+EXPORT_SYMBOL_GPL(xen_event_channel_op_compat);
+
+int HYPERVISOR_physdev_op_compat(int cmd, void *arg)
+{
+ struct physdev_op op;
+ int rc;
+
+ op.cmd = cmd;
+ memcpy(&op.u, arg, sizeof(op.u));
+ rc = _hypercall1(int, physdev_op_compat, &op);
+
+ switch (cmd) {
+ case PHYSDEVOP_IRQ_UNMASK_NOTIFY:
+ case PHYSDEVOP_set_iopl:
+ case PHYSDEVOP_set_iobitmap:
+ case PHYSDEVOP_apic_write:
+ /* no output */
+ break;
+
+#define COPY_BACK(pop, fld) \
+ case PHYSDEVOP_##pop: \
+ memcpy(arg, &op.u.fld, sizeof(op.u.fld)); \
+ break
+
+ COPY_BACK(irq_status_query, irq_status_query);
+ COPY_BACK(apic_read, apic_op);
+ COPY_BACK(ASSIGN_VECTOR, irq_op);
+#undef COPY_BACK
+
+ default:
+ WARN_ON(rc != -ENOSYS);
+ break;
+ }
+
+ return rc;
+}
diff --git a/drivers/xen/gntdev.c b/drivers/xen/gntdev.c
index 610bfc6be177..2e22df2f7a3f 100644
--- a/drivers/xen/gntdev.c
+++ b/drivers/xen/gntdev.c
@@ -105,6 +105,21 @@ static void gntdev_print_maps(struct gntdev_priv *priv,
#endif
}
+static void gntdev_free_map(struct grant_map *map)
+{
+ if (map == NULL)
+ return;
+
+ if (map->pages)
+ free_xenballooned_pages(map->count, map->pages);
+ kfree(map->pages);
+ kfree(map->grants);
+ kfree(map->map_ops);
+ kfree(map->unmap_ops);
+ kfree(map->kmap_ops);
+ kfree(map);
+}
+
static struct grant_map *gntdev_alloc_map(struct gntdev_priv *priv, int count)
{
struct grant_map *add;
@@ -142,12 +157,7 @@ static struct grant_map *gntdev_alloc_map(struct gntdev_priv *priv, int count)
return add;
err:
- kfree(add->pages);
- kfree(add->grants);
- kfree(add->map_ops);
- kfree(add->unmap_ops);
- kfree(add->kmap_ops);
- kfree(add);
+ gntdev_free_map(add);
return NULL;
}
@@ -198,17 +208,9 @@ static void gntdev_put_map(struct grant_map *map)
evtchn_put(map->notify.event);
}
- if (map->pages) {
- if (!use_ptemod)
- unmap_grant_pages(map, 0, map->count);
-
- free_xenballooned_pages(map->count, map->pages);
- }
- kfree(map->pages);
- kfree(map->grants);
- kfree(map->map_ops);
- kfree(map->unmap_ops);
- kfree(map);
+ if (map->pages && !use_ptemod)
+ unmap_grant_pages(map, 0, map->count);
+ gntdev_free_map(map);
}
/* ------------------------------------------------------------------ */
diff --git a/drivers/xen/grant-table.c b/drivers/xen/grant-table.c
index b2b0a375b348..b91f14e83164 100644
--- a/drivers/xen/grant-table.c
+++ b/drivers/xen/grant-table.c
@@ -84,7 +84,7 @@ struct gnttab_ops {
* nr_gframes is the number of frames to map grant table. Returning
* GNTST_okay means success and negative value means failure.
*/
- int (*map_frames)(unsigned long *frames, unsigned int nr_gframes);
+ int (*map_frames)(xen_pfn_t *frames, unsigned int nr_gframes);
/*
* Release a list of frames which are mapped in map_frames for grant
* entry status.
@@ -960,7 +960,7 @@ static unsigned nr_status_frames(unsigned nr_grant_frames)
return (nr_grant_frames * GREFS_PER_GRANT_FRAME + SPP - 1) / SPP;
}
-static int gnttab_map_frames_v1(unsigned long *frames, unsigned int nr_gframes)
+static int gnttab_map_frames_v1(xen_pfn_t *frames, unsigned int nr_gframes)
{
int rc;
@@ -977,7 +977,7 @@ static void gnttab_unmap_frames_v1(void)
arch_gnttab_unmap(gnttab_shared.addr, nr_grant_frames);
}
-static int gnttab_map_frames_v2(unsigned long *frames, unsigned int nr_gframes)
+static int gnttab_map_frames_v2(xen_pfn_t *frames, unsigned int nr_gframes)
{
uint64_t *sframes;
unsigned int nr_sframes;
@@ -1029,7 +1029,7 @@ static void gnttab_unmap_frames_v2(void)
static int gnttab_map(unsigned int start_idx, unsigned int end_idx)
{
struct gnttab_setup_table setup;
- unsigned long *frames;
+ xen_pfn_t *frames;
unsigned int nr_gframes = end_idx + 1;
int rc;
diff --git a/drivers/xen/privcmd.c b/drivers/xen/privcmd.c
index 8adb9cc267f9..71f5c459b088 100644
--- a/drivers/xen/privcmd.c
+++ b/drivers/xen/privcmd.c
@@ -361,13 +361,13 @@ static long privcmd_ioctl_mmap_batch(void __user *udata, int version)
down_write(&mm->mmap_sem);
vma = find_vma(mm, m.addr);
- ret = -EINVAL;
if (!vma ||
vma->vm_ops != &privcmd_vm_ops ||
(m.addr != vma->vm_start) ||
((m.addr + (nr_pages << PAGE_SHIFT)) != vma->vm_end) ||
!privcmd_enforce_singleshot_mapping(vma)) {
up_write(&mm->mmap_sem);
+ ret = -EINVAL;
goto out;
}
@@ -383,12 +383,16 @@ static long privcmd_ioctl_mmap_batch(void __user *udata, int version)
up_write(&mm->mmap_sem);
- if (state.global_error && (version == 1)) {
- /* Write back errors in second pass. */
- state.user_mfn = (xen_pfn_t *)m.arr;
- state.err = err_array;
- ret = traverse_pages(m.num, sizeof(xen_pfn_t),
- &pagelist, mmap_return_errors_v1, &state);
+ if (version == 1) {
+ if (state.global_error) {
+ /* Write back errors in second pass. */
+ state.user_mfn = (xen_pfn_t *)m.arr;
+ state.err = err_array;
+ ret = traverse_pages(m.num, sizeof(xen_pfn_t),
+ &pagelist, mmap_return_errors_v1, &state);
+ } else
+ ret = 0;
+
} else if (version == 2) {
ret = __copy_to_user(m.err, err_array, m.num * sizeof(int));
if (ret)
diff --git a/drivers/xen/sys-hypervisor.c b/drivers/xen/sys-hypervisor.c
index 5e5ad7e28858..96453f8a85c5 100644
--- a/drivers/xen/sys-hypervisor.c
+++ b/drivers/xen/sys-hypervisor.c
@@ -11,6 +11,7 @@
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/kobject.h>
+#include <linux/err.h>
#include <asm/xen/hypervisor.h>
#include <asm/xen/hypercall.h>
@@ -284,7 +285,8 @@ static ssize_t virtual_start_show(struct hyp_sysfs_attr *attr, char *buffer)
ret = HYPERVISOR_xen_version(XENVER_platform_parameters,
parms);
if (!ret)
- ret = sprintf(buffer, "%lx\n", parms->virt_start);
+ ret = sprintf(buffer, "%"PRI_xen_ulong"\n",
+ parms->virt_start);
kfree(parms);
}
diff --git a/drivers/xen/xen-pciback/vpci.c b/drivers/xen/xen-pciback/vpci.c
index 46d140baebd8..0f478ac483cd 100644
--- a/drivers/xen/xen-pciback/vpci.c
+++ b/drivers/xen/xen-pciback/vpci.c
@@ -89,9 +89,15 @@ static int __xen_pcibk_add_pci_dev(struct xen_pcibk_device *pdev,
mutex_lock(&vpci_dev->lock);
- /* Keep multi-function devices together on the virtual PCI bus */
- for (slot = 0; slot < PCI_SLOT_MAX; slot++) {
- if (!list_empty(&vpci_dev->dev_list[slot])) {
+ /*
+ * Keep multi-function devices together on the virtual PCI bus, except
+ * virtual functions.
+ */
+ if (!dev->is_virtfn) {
+ for (slot = 0; slot < PCI_SLOT_MAX; slot++) {
+ if (list_empty(&vpci_dev->dev_list[slot]))
+ continue;
+
t = list_entry(list_first(&vpci_dev->dev_list[slot]),
struct pci_dev_entry, list);
@@ -116,7 +122,7 @@ static int __xen_pcibk_add_pci_dev(struct xen_pcibk_device *pdev,
pci_name(dev), slot);
list_add_tail(&dev_entry->list,
&vpci_dev->dev_list[slot]);
- func = PCI_FUNC(dev->devfn);
+ func = dev->is_virtfn ? 0 : PCI_FUNC(dev->devfn);
goto unlock;
}
}
diff --git a/drivers/xen/xenbus/xenbus_dev_frontend.c b/drivers/xen/xenbus/xenbus_dev_frontend.c
index 89f76252a16f..ac727028e658 100644
--- a/drivers/xen/xenbus/xenbus_dev_frontend.c
+++ b/drivers/xen/xenbus/xenbus_dev_frontend.c
@@ -458,7 +458,7 @@ static ssize_t xenbus_file_write(struct file *filp,
goto out;
/* Can't write a xenbus message larger we can buffer */
- if ((len + u->len) > sizeof(u->u.buffer)) {
+ if (len > sizeof(u->u.buffer) - u->len) {
/* On error, dump existing buffer */
u->len = 0;
rc = -EINVAL;
diff --git a/drivers/xen/xenbus/xenbus_xs.c b/drivers/xen/xenbus/xenbus_xs.c
index 48220e129f85..acedeabe589c 100644
--- a/drivers/xen/xenbus/xenbus_xs.c
+++ b/drivers/xen/xenbus/xenbus_xs.c
@@ -625,8 +625,9 @@ static struct xenbus_watch *find_watch(const char *token)
* so if we are running on anything older than 4 do not attempt to read
* control/platform-feature-xs_reset_watches.
*/
-static bool xen_strict_xenbus_quirk()
+static bool xen_strict_xenbus_quirk(void)
{
+#ifdef CONFIG_X86
uint32_t eax, ebx, ecx, edx, base;
base = xen_cpuid_base();
@@ -634,6 +635,7 @@ static bool xen_strict_xenbus_quirk()
if ((eax >> 16) < 4)
return true;
+#endif
return false;
}
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