* 'x86/platform' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (9690 commits)
x86: Document x86_init.paging.pagetable_init()
x86: xen: Cleanup and remove x86_init.paging.pagetable_setup_done()
x86: Move paging_init() call to x86_init.paging.pagetable_init()
x86: Rename pagetable_setup_start() to pagetable_init()
x86: Remove base argument from x86_init.paging.pagetable_setup_start
Linux 3.6-rc5
HID: tpkbd: work even if the new Lenovo Keyboard driver is not configured
Remove user-triggerable BUG from mpol_to_str
xen/pciback: Fix proper FLR steps.
uml: fix compile error in deliver_alarm()
dj: memory scribble in logi_dj
Fix order of arguments to compat_put_time[spec|val]
xen: Use correct masking in xen_swiotlb_alloc_coherent.
xen: fix logical error in tlb flushing
xen/p2m: Fix one-off error in checking the P2M tree directory.
powerpc: Don't use __put_user() in patch_instruction
powerpc: Make sure IPI handlers see data written by IPI senders
powerpc: Restore correct DSCR in context switch
powerpc: Fix DSCR inheritance in copy_thread()
powerpc: Keep thread.dscr and thread.dscr_inherit in sync
...
#define set_xen_guest_handle(hnd, val) do { (hnd).p = val; } while (0)
#ifndef __ASSEMBLY__
+/* Explicitly size integers that represent pfns in the public interface
+ * with Xen so that we could have one ABI that works for 32 and 64 bit
+ * guests. */
+typedef unsigned long xen_pfn_t;
/* Guest handles for primitive C types. */
__DEFINE_GUEST_HANDLE(uchar, unsigned char);
__DEFINE_GUEST_HANDLE(uint, unsigned int);
DEFINE_GUEST_HANDLE(uint64_t);
DEFINE_GUEST_HANDLE(uint32_t);
-typedef unsigned long xen_pfn_t;
DEFINE_GUEST_HANDLE(xen_pfn_t);
#define PRI_xen_pfn "lx"
#endif
#endif /* !__ASSEMBLY__ */
+#include <asm/pvclock-abi.h>
+
/* Size of the shared_info area (this is not related to page size). */
#define XSI_SHIFT 14
#define XSI_SIZE (1 << XSI_SHIFT)
#endif
#ifndef __ASSEMBLY__
+/* Explicitly size integers that represent pfns in the public interface
+ * with Xen so that on ARM we can have one ABI that works for 32 and 64
+ * bit guests. */
+typedef unsigned long xen_pfn_t;
/* Guest handles for primitive C types. */
__DEFINE_GUEST_HANDLE(uchar, unsigned char);
__DEFINE_GUEST_HANDLE(uint, unsigned int);
DEFINE_GUEST_HANDLE(void);
DEFINE_GUEST_HANDLE(uint64_t);
DEFINE_GUEST_HANDLE(uint32_t);
+DEFINE_GUEST_HANDLE(xen_pfn_t);
#endif
#ifndef HYPERVISOR_VIRT_START
#include "interface_64.h"
#endif
+#include <asm/pvclock-abi.h>
+
#ifndef __ASSEMBLY__
/*
* The following is all CPU context. Note that the fpu_ctxt block is filled
#include <xen/xen.h>
#include <xen/interface/physdev.h>
+#include "xen-ops.h"
-unsigned int xen_io_apic_read(unsigned apic, unsigned reg)
+static unsigned int xen_io_apic_read(unsigned apic, unsigned reg)
{
struct physdev_apic apic_op;
int ret;
#include "smp.h"
#include "multicalls.h"
+#include <xen/events.h>
+
EXPORT_SYMBOL_GPL(hypercall_page);
DEFINE_PER_CPU(struct vcpu_info *, xen_vcpu);
unsigned long range;
int err = 0;
+ if (xen_feature(XENFEAT_auto_translated_physmap))
+ return -EINVAL;
+
prot = __pgprot(pgprot_val(prot) | _PAGE_IOMAP);
BUG_ON(!((vma->vm_flags & (VM_PFNMAP | VM_RESERVED | VM_IO)) ==
if (err)
goto out;
- err = -EFAULT;
- if (HYPERVISOR_mmu_update(mmu_update, batch, NULL, domid) < 0)
+ err = HYPERVISOR_mmu_update(mmu_update, batch, NULL, domid);
+ if (err < 0)
goto out;
nr -= batch;
#include <xen/xen.h>
#include <asm/iommu_table.h>
+#include <asm/xen/swiotlb-xen.h>
int xen_swiotlb __read_mostly;
static struct dma_map_ops xen_swiotlb_dma_ops = {
}
}
IOMMU_INIT_FINISH(pci_xen_swiotlb_detect,
- 0,
+ NULL,
pci_xen_swiotlb_init,
- 0);
+ NULL);
#include <linux/module.h>
#include <xen/platform_pci.h>
+#include "xen-ops.h"
#define XEN_PLATFORM_ERR_MAGIC -1
#define XEN_PLATFORM_ERR_PROTOCOL -2
__FINIT
.pushsection .text
- .align PAGE_SIZE
+ .balign PAGE_SIZE
ENTRY(hypercall_page)
- .skip PAGE_SIZE
+#define NEXT_HYPERCALL(x) \
+ ENTRY(xen_hypercall_##x) \
+ .skip 32
+
+NEXT_HYPERCALL(set_trap_table)
+NEXT_HYPERCALL(mmu_update)
+NEXT_HYPERCALL(set_gdt)
+NEXT_HYPERCALL(stack_switch)
+NEXT_HYPERCALL(set_callbacks)
+NEXT_HYPERCALL(fpu_taskswitch)
+NEXT_HYPERCALL(sched_op_compat)
+NEXT_HYPERCALL(platform_op)
+NEXT_HYPERCALL(set_debugreg)
+NEXT_HYPERCALL(get_debugreg)
+NEXT_HYPERCALL(update_descriptor)
+NEXT_HYPERCALL(ni)
+NEXT_HYPERCALL(memory_op)
+NEXT_HYPERCALL(multicall)
+NEXT_HYPERCALL(update_va_mapping)
+NEXT_HYPERCALL(set_timer_op)
+NEXT_HYPERCALL(event_channel_op_compat)
+NEXT_HYPERCALL(xen_version)
+NEXT_HYPERCALL(console_io)
+NEXT_HYPERCALL(physdev_op_compat)
+NEXT_HYPERCALL(grant_table_op)
+NEXT_HYPERCALL(vm_assist)
+NEXT_HYPERCALL(update_va_mapping_otherdomain)
+NEXT_HYPERCALL(iret)
+NEXT_HYPERCALL(vcpu_op)
+NEXT_HYPERCALL(set_segment_base)
+NEXT_HYPERCALL(mmuext_op)
+NEXT_HYPERCALL(xsm_op)
+NEXT_HYPERCALL(nmi_op)
+NEXT_HYPERCALL(sched_op)
+NEXT_HYPERCALL(callback_op)
+NEXT_HYPERCALL(xenoprof_op)
+NEXT_HYPERCALL(event_channel_op)
+NEXT_HYPERCALL(physdev_op)
+NEXT_HYPERCALL(hvm_op)
+NEXT_HYPERCALL(sysctl)
+NEXT_HYPERCALL(domctl)
+NEXT_HYPERCALL(kexec_op)
+NEXT_HYPERCALL(tmem_op) /* 38 */
+ENTRY(xen_hypercall_rsvr)
+ .skip 320
+NEXT_HYPERCALL(mca) /* 48 */
+NEXT_HYPERCALL(arch_1)
+NEXT_HYPERCALL(arch_2)
+NEXT_HYPERCALL(arch_3)
+NEXT_HYPERCALL(arch_4)
+NEXT_HYPERCALL(arch_5)
+NEXT_HYPERCALL(arch_6)
+ .balign PAGE_SIZE
.popsection
ELFNOTE(Xen, XEN_ELFNOTE_GUEST_OS, .asciz "linux")
return errno_to_pcibios_err(do_pci_op(pdev, &op));
}
-struct pci_ops pcifront_bus_ops = {
+static struct pci_ops pcifront_bus_ops = {
.read = pcifront_bus_read,
.write = pcifront_bus_write,
};
#include <linux/console.h>
#include <linux/delay.h>
#include <linux/err.h>
+#include <linux/irq.h>
#include <linux/init.h>
#include <linux/types.h>
#include <linux/list.h>
#include <xen/page.h>
#include <xen/events.h>
#include <xen/interface/io/console.h>
+#include <xen/interface/sched.h>
#include <xen/hvc-console.h>
#include <xen/xenbus.h>
{
struct shared_info *s = HYPERVISOR_shared_info;
unsigned int cpu = get_cpu();
+ int do_hypercall = 0, evtchn_pending = 0;
BUG_ON(!irqs_disabled());
- /* Slow path (hypercall) if this is a non-local port. */
- if (unlikely(cpu != cpu_from_evtchn(port))) {
+ if (unlikely((cpu != cpu_from_evtchn(port))))
+ do_hypercall = 1;
+ else
+ evtchn_pending = sync_test_bit(port, &s->evtchn_pending[0]);
+
+ if (unlikely(evtchn_pending && xen_hvm_domain()))
+ do_hypercall = 1;
+
+ /* Slow path (hypercall) if this is a non-local port or if this is
+ * an hvm domain and an event is pending (hvm domains don't have
+ * their own implementation of irq_enable). */
+ if (do_hypercall) {
struct evtchn_unmask unmask = { .port = port };
(void)HYPERVISOR_event_channel_op(EVTCHNOP_unmask, &unmask);
} else {
* 'hw_resend_irq'. Just like a real IO-APIC we 'lose
* the interrupt edge' if the channel is masked.
*/
- if (sync_test_bit(port, &s->evtchn_pending[0]) &&
+ if (evtchn_pending &&
!sync_test_and_set_bit(port / BITS_PER_LONG,
&vcpu_info->evtchn_pending_sel))
vcpu_info->evtchn_upcall_pending = 1;
struct irq_info *info = info_for_irq(irq);
WARN_ON(info == NULL || info->type != IRQT_EVTCHN);
}
+ irq_clear_status_flags(irq, IRQ_NOREQUEST|IRQ_NOAUTOEN);
out:
mutex_unlock(&irq_mapping_update_lock);
spin_unlock(&priv->lock);
}
-struct mmu_notifier_ops gntdev_mmu_ops = {
+static struct mmu_notifier_ops gntdev_mmu_ops = {
.release = mn_release,
.invalidate_page = mn_invl_page,
.invalidate_range_start = mn_invl_range_start,
#include <xen/interface/memory.h>
#include <xen/hvc-console.h>
#include <asm/xen/hypercall.h>
+#include <asm/xen/interface.h>
#include <asm/pgtable.h>
#include <asm/sync_bitops.h>
}
EXPORT_SYMBOL_GPL(gnttab_grant_foreign_access);
-void gnttab_update_subpage_entry_v2(grant_ref_t ref, domid_t domid,
- unsigned long frame, int flags,
- unsigned page_off,
- unsigned length)
+static void gnttab_update_subpage_entry_v2(grant_ref_t ref, domid_t domid,
+ unsigned long frame, int flags,
+ unsigned page_off, unsigned length)
{
gnttab_shared.v2[ref].sub_page.frame = frame;
gnttab_shared.v2[ref].sub_page.page_off = page_off;
}
EXPORT_SYMBOL_GPL(gnttab_subpage_grants_available);
-void gnttab_update_trans_entry_v2(grant_ref_t ref, domid_t domid,
- int flags, domid_t trans_domid,
- grant_ref_t trans_gref)
+static void gnttab_update_trans_entry_v2(grant_ref_t ref, domid_t domid,
+ int flags, domid_t trans_domid,
+ grant_ref_t trans_gref)
{
gnttab_shared.v2[ref].transitive.trans_domid = trans_domid;
gnttab_shared.v2[ref].transitive.gref = trans_gref;
*/
static int gather_array(struct list_head *pagelist,
unsigned nelem, size_t size,
- void __user *data)
+ const void __user *data)
{
unsigned pageidx;
void *pagedata;
domid_t domain;
unsigned long va;
struct vm_area_struct *vma;
- int err;
-
- xen_pfn_t __user *user;
+ /* A tristate:
+ * 0 for no errors
+ * 1 if at least one error has happened (and no
+ * -ENOENT errors have happened)
+ * -ENOENT if at least 1 -ENOENT has happened.
+ */
+ int global_error;
+ /* An array for individual errors */
+ int *err;
+
+ /* User-space mfn array to store errors in the second pass for V1. */
+ xen_pfn_t __user *user_mfn;
};
static int mmap_batch_fn(void *data, void *state)
{
xen_pfn_t *mfnp = data;
struct mmap_batch_state *st = state;
+ int ret;
+
+ ret = xen_remap_domain_mfn_range(st->vma, st->va & PAGE_MASK, *mfnp, 1,
+ st->vma->vm_page_prot, st->domain);
- if (xen_remap_domain_mfn_range(st->vma, st->va & PAGE_MASK, *mfnp, 1,
- st->vma->vm_page_prot, st->domain) < 0) {
- *mfnp |= 0xf0000000U;
- st->err++;
+ /* Store error code for second pass. */
+ *(st->err++) = ret;
+
+ /* And see if it affects the global_error. */
+ if (ret < 0) {
+ if (ret == -ENOENT)
+ st->global_error = -ENOENT;
+ else {
+ /* Record that at least one error has happened. */
+ if (st->global_error == 0)
+ st->global_error = 1;
+ }
}
st->va += PAGE_SIZE;
return 0;
}
-static int mmap_return_errors(void *data, void *state)
+static int mmap_return_errors_v1(void *data, void *state)
{
xen_pfn_t *mfnp = data;
struct mmap_batch_state *st = state;
-
- return put_user(*mfnp, st->user++);
+ int err = *(st->err++);
+
+ /*
+ * V1 encodes the error codes in the 32bit top nibble of the
+ * mfn (with its known limitations vis-a-vis 64 bit callers).
+ */
+ *mfnp |= (err == -ENOENT) ?
+ PRIVCMD_MMAPBATCH_PAGED_ERROR :
+ PRIVCMD_MMAPBATCH_MFN_ERROR;
+ return __put_user(*mfnp, st->user_mfn++);
}
static struct vm_operations_struct privcmd_vm_ops;
-static long privcmd_ioctl_mmap_batch(void __user *udata)
+static long privcmd_ioctl_mmap_batch(void __user *udata, int version)
{
int ret;
- struct privcmd_mmapbatch m;
+ struct privcmd_mmapbatch_v2 m;
struct mm_struct *mm = current->mm;
struct vm_area_struct *vma;
unsigned long nr_pages;
LIST_HEAD(pagelist);
+ int *err_array = NULL;
struct mmap_batch_state state;
if (!xen_initial_domain())
return -EPERM;
- if (copy_from_user(&m, udata, sizeof(m)))
- return -EFAULT;
+ switch (version) {
+ case 1:
+ if (copy_from_user(&m, udata, sizeof(struct privcmd_mmapbatch)))
+ return -EFAULT;
+ /* Returns per-frame error in m.arr. */
+ m.err = NULL;
+ if (!access_ok(VERIFY_WRITE, m.arr, m.num * sizeof(*m.arr)))
+ return -EFAULT;
+ break;
+ case 2:
+ if (copy_from_user(&m, udata, sizeof(struct privcmd_mmapbatch_v2)))
+ return -EFAULT;
+ /* Returns per-frame error code in m.err. */
+ if (!access_ok(VERIFY_WRITE, m.err, m.num * (sizeof(*m.err))))
+ return -EFAULT;
+ break;
+ default:
+ return -EINVAL;
+ }
nr_pages = m.num;
if ((m.num <= 0) || (nr_pages > (LONG_MAX >> PAGE_SHIFT)))
return -EINVAL;
- ret = gather_array(&pagelist, m.num, sizeof(xen_pfn_t),
- m.arr);
+ ret = gather_array(&pagelist, m.num, sizeof(xen_pfn_t), m.arr);
- if (ret || list_empty(&pagelist))
+ if (ret)
goto out;
+ if (list_empty(&pagelist)) {
+ ret = -EINVAL;
+ goto out;
+ }
+
+ err_array = kcalloc(m.num, sizeof(int), GFP_KERNEL);
+ if (err_array == NULL) {
+ ret = -ENOMEM;
+ goto out;
+ }
down_write(&mm->mmap_sem);
goto out;
}
- state.domain = m.dom;
- state.vma = vma;
- state.va = m.addr;
- state.err = 0;
+ state.domain = m.dom;
+ state.vma = vma;
+ state.va = m.addr;
+ state.global_error = 0;
+ state.err = err_array;
- ret = traverse_pages(m.num, sizeof(xen_pfn_t),
- &pagelist, mmap_batch_fn, &state);
+ /* mmap_batch_fn guarantees ret == 0 */
+ BUG_ON(traverse_pages(m.num, sizeof(xen_pfn_t),
+ &pagelist, mmap_batch_fn, &state));
up_write(&mm->mmap_sem);
- if (state.err > 0) {
- state.user = m.arr;
+ 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, &state);
+ &pagelist, mmap_return_errors_v1, &state);
+ } else if (version == 2) {
+ ret = __copy_to_user(m.err, err_array, m.num * sizeof(int));
+ if (ret)
+ ret = -EFAULT;
}
+ /* If we have not had any EFAULT-like global errors then set the global
+ * error to -ENOENT if necessary. */
+ if ((ret == 0) && (state.global_error == -ENOENT))
+ ret = -ENOENT;
+
out:
+ kfree(err_array);
free_page_list(&pagelist);
return ret;
break;
case IOCTL_PRIVCMD_MMAPBATCH:
- ret = privcmd_ioctl_mmap_batch(udata);
+ ret = privcmd_ioctl_mmap_batch(udata, 1);
+ break;
+
+ case IOCTL_PRIVCMD_MMAPBATCH_V2:
+ ret = privcmd_ioctl_mmap_batch(udata, 2);
break;
default:
static int privcmd_mmap(struct file *file, struct vm_area_struct *vma)
{
- /* Unsupported for auto-translate guests. */
- if (xen_feature(XENFEAT_auto_translated_physmap))
- return -ENOSYS;
-
/* DONTCOPY is essential for Xen because copy_page_range doesn't know
* how to recreate these mappings */
vma->vm_flags |= VM_RESERVED | VM_IO | VM_DONTCOPY | VM_PFNMAP;
* Quick lookup value of the bus address of the IOTLB.
*/
-u64 start_dma_addr;
+static u64 start_dma_addr;
static dma_addr_t xen_phys_to_bus(phys_addr_t paddr)
{
}
EXPORT_SYMBOL_GPL(xen_swiotlb_map_sg_attrs);
-int
-xen_swiotlb_map_sg(struct device *hwdev, struct scatterlist *sgl, int nelems,
- enum dma_data_direction dir)
-{
- return xen_swiotlb_map_sg_attrs(hwdev, sgl, nelems, dir, NULL);
-}
-EXPORT_SYMBOL_GPL(xen_swiotlb_map_sg);
-
/*
* Unmap a set of streaming mode DMA translations. Again, cpu read rules
* concerning calls here are the same as for swiotlb_unmap_page() above.
}
EXPORT_SYMBOL_GPL(xen_swiotlb_unmap_sg_attrs);
-void
-xen_swiotlb_unmap_sg(struct device *hwdev, struct scatterlist *sgl, int nelems,
- enum dma_data_direction dir)
-{
- return xen_swiotlb_unmap_sg_attrs(hwdev, sgl, nelems, dir, NULL);
-}
-EXPORT_SYMBOL_GPL(xen_swiotlb_unmap_sg);
-
/*
* Make physical memory consistent for a set of streaming mode DMA translations
* after a transfer.
/* UUID */
-static ssize_t uuid_show(struct hyp_sysfs_attr *attr, char *buffer)
+static ssize_t uuid_show_fallback(struct hyp_sysfs_attr *attr, char *buffer)
{
char *vm, *val;
int ret;
return ret;
}
+static ssize_t uuid_show(struct hyp_sysfs_attr *attr, char *buffer)
+{
+ xen_domain_handle_t uuid;
+ int ret;
+ ret = HYPERVISOR_xen_version(XENVER_guest_handle, uuid);
+ if (ret)
+ return uuid_show_fallback(attr, buffer);
+ ret = sprintf(buffer, "%pU\n", uuid);
+ return ret;
+}
+
HYPERVISOR_ATTR_RO(uuid);
static int __init xen_sysfs_uuid_init(void)
#include <asm/xen/hypercall.h>
#include <asm/xen/page.h>
#include <asm/xen/hypervisor.h>
+#include <xen/tmem.h>
#define TMEM_CONTROL 0
#define TMEM_NEW_POOL 1
return 0;
}
-const struct file_operations xenbus_backend_fops = {
+static const struct file_operations xenbus_backend_fops = {
.open = xenbus_backend_open,
.mmap = xenbus_backend_mmap,
.unlocked_ioctl = xenbus_backend_ioctl,
return 0;
}
-struct xenbus_device *xenbus_device_find(const char *nodename,
- struct bus_type *bus)
+static struct xenbus_device *xenbus_device_find(const char *nodename,
+ struct bus_type *bus)
{
struct xb_find_info info = { .dev = NULL, .nodename = nodename };
#include <xen/xenbus.h>
#include <xen/events.h>
#include <xen/page.h>
+#include <xen/xen.h>
#include <xen/platform_pci.h>
#define GNTTABOP_transfer 4
struct gnttab_transfer {
/* IN parameters. */
- unsigned long mfn;
+ xen_pfn_t mfn;
domid_t domid;
grant_ref_t ref;
/* OUT parameters. */
struct {
union {
grant_ref_t ref;
- unsigned long gmfn;
+ xen_pfn_t gmfn;
} u;
domid_t domid;
uint16_t offset;
* OUT: GMFN bases of extents that were allocated
* (NB. This command also updates the mach_to_phys translation table)
*/
- GUEST_HANDLE(ulong) extent_start;
+ GUEST_HANDLE(xen_pfn_t) extent_start;
/* Number of extents, and size/alignment of each (2^extent_order pages). */
unsigned long nr_extents;
* any large discontiguities in the machine address space, 2MB gaps in
* the machphys table will be represented by an MFN base of zero.
*/
- GUEST_HANDLE(ulong) extent_start;
+ GUEST_HANDLE(xen_pfn_t) extent_start;
/*
* Number of extents written to the above array. This will be smaller
/* Which domain to change the mapping for. */
domid_t domid;
+ /* Number of pages to go through for gmfn_range */
+ uint16_t size;
+
/* Source mapping space. */
#define XENMAPSPACE_shared_info 0 /* shared info page */
#define XENMAPSPACE_grant_table 1 /* grant table page */
unsigned long idx;
/* GPFN where the source mapping page should appear. */
- unsigned long gpfn;
+ xen_pfn_t gpfn;
};
DEFINE_GUEST_HANDLE_STRUCT(xen_add_to_physmap);
#define XENPF_add_memtype 31
struct xenpf_add_memtype {
/* IN variables. */
- unsigned long mfn;
+ xen_pfn_t mfn;
uint64_t nr_mfns;
uint32_t type;
/* OUT variables. */
/* IN variables. */
uint32_t reg;
/* OUT variables. */
- unsigned long mfn;
+ xen_pfn_t mfn;
uint64_t nr_mfns;
uint32_t type;
};
/* arg == NULL; returns host memory page size. */
#define XENVER_pagesize 7
+/* arg == xen_domain_handle_t. */
+#define XENVER_guest_handle 8
+
#endif /* __XEN_PUBLIC_VERSION_H__ */
#define __XEN_PUBLIC_XEN_H__
#include <asm/xen/interface.h>
-#include <asm/pvclock-abi.h>
/*
* XEN "SYSTEM CALLS" (a.k.a. HYPERCALLS).
unsigned int cmd;
union {
/* [UN]PIN_TABLE, NEW_BASEPTR, NEW_USER_BASEPTR */
- unsigned long mfn;
+ xen_pfn_t mfn;
/* INVLPG_LOCAL, INVLPG_ALL, SET_LDT */
unsigned long linear_addr;
} arg1;
unsigned long nr_pages; /* Total pages allocated to this domain. */
unsigned long shared_info; /* MACHINE address of shared info struct. */
uint32_t flags; /* SIF_xxx flags. */
- unsigned long store_mfn; /* MACHINE page number of shared page. */
+ xen_pfn_t store_mfn; /* MACHINE page number of shared page. */
uint32_t store_evtchn; /* Event channel for store communication. */
union {
struct {
- unsigned long mfn; /* MACHINE page number of console page. */
+ xen_pfn_t mfn; /* MACHINE page number of console page. */
uint32_t evtchn; /* Event channel for console page. */
} domU;
struct {
#include <linux/types.h>
#include <linux/compiler.h>
-
-typedef unsigned long xen_pfn_t;
+#include <xen/interface/xen.h>
struct privcmd_hypercall {
__u64 op;
int num; /* number of pages to populate */
domid_t dom; /* target domain */
__u64 addr; /* virtual address */
- xen_pfn_t __user *arr; /* array of mfns - top nibble set on err */
+ xen_pfn_t __user *arr; /* array of mfns - or'd with
+ PRIVCMD_MMAPBATCH_*_ERROR on err */
+};
+
+#define PRIVCMD_MMAPBATCH_MFN_ERROR 0xf0000000U
+#define PRIVCMD_MMAPBATCH_PAGED_ERROR 0x80000000U
+
+struct privcmd_mmapbatch_v2 {
+ unsigned int num; /* number of pages to populate */
+ domid_t dom; /* target domain */
+ __u64 addr; /* virtual address */
+ const xen_pfn_t __user *arr; /* array of mfns */
+ int __user *err; /* array of error codes */
};
/*
* @cmd: IOCTL_PRIVCMD_HYPERCALL
* @arg: &privcmd_hypercall_t
* Return: Value returned from execution of the specified hypercall.
+ *
+ * @cmd: IOCTL_PRIVCMD_MMAPBATCH_V2
+ * @arg: &struct privcmd_mmapbatch_v2
+ * Return: 0 on success (i.e., arg->err contains valid error codes for
+ * each frame). On an error other than a failed frame remap, -1 is
+ * returned and errno is set to EINVAL, EFAULT etc. As an exception,
+ * if the operation was otherwise successful but any frame failed with
+ * -ENOENT, then -1 is returned and errno is set to ENOENT.
*/
#define IOCTL_PRIVCMD_HYPERCALL \
_IOC(_IOC_NONE, 'P', 0, sizeof(struct privcmd_hypercall))
_IOC(_IOC_NONE, 'P', 2, sizeof(struct privcmd_mmap))
#define IOCTL_PRIVCMD_MMAPBATCH \
_IOC(_IOC_NONE, 'P', 3, sizeof(struct privcmd_mmapbatch))
+#define IOCTL_PRIVCMD_MMAPBATCH_V2 \
+ _IOC(_IOC_NONE, 'P', 4, sizeof(struct privcmd_mmapbatch_v2))
#endif /* __LINUX_PUBLIC_PRIVCMD_H__ */
extern void xen_swiotlb_unmap_page(struct device *hwdev, dma_addr_t dev_addr,
size_t size, enum dma_data_direction dir,
struct dma_attrs *attrs);
-/*
-extern int
-xen_swiotlb_map_sg(struct device *hwdev, struct scatterlist *sg, int nents,
- enum dma_data_direction dir);
-
-extern void
-xen_swiotlb_unmap_sg(struct device *hwdev, struct scatterlist *sg, int nents,
- enum dma_data_direction dir);
-*/
extern int
xen_swiotlb_map_sg_attrs(struct device *hwdev, struct scatterlist *sgl,
int nelems, enum dma_data_direction dir,
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