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-rw-r--r--arch/arm/xen/enlighten.c11
-rw-r--r--arch/x86/xen/mmu.c60
-rw-r--r--arch/x86/xen/xen-pvh.S47
-rw-r--r--drivers/net/xen-netfront.c2
-rw-r--r--drivers/xen/privcmd.c135
-rw-r--r--drivers/xen/xenbus/xenbus_probe.c5
-rw-r--r--include/uapi/xen/privcmd.h11
-rw-r--r--include/xen/interface/memory.h66
-rw-r--r--include/xen/interface/xen.h7
-rw-r--r--include/xen/xen-ops.h24
10 files changed, 332 insertions, 36 deletions
diff --git a/arch/arm/xen/enlighten.c b/arch/arm/xen/enlighten.c
index ba7f4c8f5c3e..8073625371f5 100644
--- a/arch/arm/xen/enlighten.c
+++ b/arch/arm/xen/enlighten.c
@@ -89,6 +89,17 @@ int xen_unmap_domain_gfn_range(struct vm_area_struct *vma,
}
EXPORT_SYMBOL_GPL(xen_unmap_domain_gfn_range);
+/* Not used by XENFEAT_auto_translated guests. */
+int xen_remap_domain_mfn_array(struct vm_area_struct *vma,
+ unsigned long addr,
+ xen_pfn_t *mfn, int nr,
+ int *err_ptr, pgprot_t prot,
+ unsigned int domid, struct page **pages)
+{
+ return -ENOSYS;
+}
+EXPORT_SYMBOL_GPL(xen_remap_domain_mfn_array);
+
static void xen_read_wallclock(struct timespec64 *ts)
{
u32 version;
diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c
index 2d76106788a3..96fc2f0fdbfe 100644
--- a/arch/x86/xen/mmu.c
+++ b/arch/x86/xen/mmu.c
@@ -63,37 +63,44 @@ static noinline void xen_flush_tlb_all(void)
#define REMAP_BATCH_SIZE 16
struct remap_data {
- xen_pfn_t *mfn;
+ xen_pfn_t *pfn;
bool contiguous;
+ bool no_translate;
pgprot_t prot;
struct mmu_update *mmu_update;
};
-static int remap_area_mfn_pte_fn(pte_t *ptep, pgtable_t token,
+static int remap_area_pfn_pte_fn(pte_t *ptep, pgtable_t token,
unsigned long addr, void *data)
{
struct remap_data *rmd = data;
- pte_t pte = pte_mkspecial(mfn_pte(*rmd->mfn, rmd->prot));
+ pte_t pte = pte_mkspecial(mfn_pte(*rmd->pfn, rmd->prot));
- /* If we have a contiguous range, just update the mfn itself,
- else update pointer to be "next mfn". */
+ /*
+ * If we have a contiguous range, just update the pfn itself,
+ * else update pointer to be "next pfn".
+ */
if (rmd->contiguous)
- (*rmd->mfn)++;
+ (*rmd->pfn)++;
else
- rmd->mfn++;
+ rmd->pfn++;
- rmd->mmu_update->ptr = virt_to_machine(ptep).maddr | MMU_NORMAL_PT_UPDATE;
+ rmd->mmu_update->ptr = virt_to_machine(ptep).maddr;
+ rmd->mmu_update->ptr |= rmd->no_translate ?
+ MMU_PT_UPDATE_NO_TRANSLATE :
+ MMU_NORMAL_PT_UPDATE;
rmd->mmu_update->val = pte_val_ma(pte);
rmd->mmu_update++;
return 0;
}
-static int do_remap_gfn(struct vm_area_struct *vma,
+static int do_remap_pfn(struct vm_area_struct *vma,
unsigned long addr,
- xen_pfn_t *gfn, int nr,
+ xen_pfn_t *pfn, int nr,
int *err_ptr, pgprot_t prot,
- unsigned domid,
+ unsigned int domid,
+ bool no_translate,
struct page **pages)
{
int err = 0;
@@ -104,11 +111,14 @@ static int do_remap_gfn(struct vm_area_struct *vma,
BUG_ON(!((vma->vm_flags & (VM_PFNMAP | VM_IO)) == (VM_PFNMAP | VM_IO)));
- rmd.mfn = gfn;
+ rmd.pfn = pfn;
rmd.prot = prot;
- /* We use the err_ptr to indicate if there we are doing a contiguous
- * mapping or a discontigious mapping. */
+ /*
+ * We use the err_ptr to indicate if there we are doing a contiguous
+ * mapping or a discontigious mapping.
+ */
rmd.contiguous = !err_ptr;
+ rmd.no_translate = no_translate;
while (nr) {
int index = 0;
@@ -119,7 +129,7 @@ static int do_remap_gfn(struct vm_area_struct *vma,
rmd.mmu_update = mmu_update;
err = apply_to_page_range(vma->vm_mm, addr, range,
- remap_area_mfn_pte_fn, &rmd);
+ remap_area_pfn_pte_fn, &rmd);
if (err)
goto out;
@@ -173,7 +183,8 @@ int xen_remap_domain_gfn_range(struct vm_area_struct *vma,
if (xen_feature(XENFEAT_auto_translated_physmap))
return -EOPNOTSUPP;
- return do_remap_gfn(vma, addr, &gfn, nr, NULL, prot, domid, pages);
+ return do_remap_pfn(vma, addr, &gfn, nr, NULL, prot, domid, false,
+ pages);
}
EXPORT_SYMBOL_GPL(xen_remap_domain_gfn_range);
@@ -192,10 +203,25 @@ int xen_remap_domain_gfn_array(struct vm_area_struct *vma,
* cause of "wrong memory was mapped in".
*/
BUG_ON(err_ptr == NULL);
- return do_remap_gfn(vma, addr, gfn, nr, err_ptr, prot, domid, pages);
+ return do_remap_pfn(vma, addr, gfn, nr, err_ptr, prot, domid,
+ false, pages);
}
EXPORT_SYMBOL_GPL(xen_remap_domain_gfn_array);
+int xen_remap_domain_mfn_array(struct vm_area_struct *vma,
+ unsigned long addr,
+ xen_pfn_t *mfn, int nr,
+ int *err_ptr, pgprot_t prot,
+ unsigned int domid, struct page **pages)
+{
+ if (xen_feature(XENFEAT_auto_translated_physmap))
+ return -EOPNOTSUPP;
+
+ return do_remap_pfn(vma, addr, mfn, nr, err_ptr, prot, domid,
+ true, pages);
+}
+EXPORT_SYMBOL_GPL(xen_remap_domain_mfn_array);
+
/* Returns: 0 success */
int xen_unmap_domain_gfn_range(struct vm_area_struct *vma,
int nr, struct page **pages)
diff --git a/arch/x86/xen/xen-pvh.S b/arch/x86/xen/xen-pvh.S
index e1a5fbeae08d..ca2d3b2bf2af 100644
--- a/arch/x86/xen/xen-pvh.S
+++ b/arch/x86/xen/xen-pvh.S
@@ -54,12 +54,19 @@
* charge of setting up it's own stack, GDT and IDT.
*/
+#define PVH_GDT_ENTRY_CS 1
+#define PVH_GDT_ENTRY_DS 2
+#define PVH_GDT_ENTRY_CANARY 3
+#define PVH_CS_SEL (PVH_GDT_ENTRY_CS * 8)
+#define PVH_DS_SEL (PVH_GDT_ENTRY_DS * 8)
+#define PVH_CANARY_SEL (PVH_GDT_ENTRY_CANARY * 8)
+
ENTRY(pvh_start_xen)
cld
lgdt (_pa(gdt))
- mov $(__BOOT_DS),%eax
+ mov $PVH_DS_SEL,%eax
mov %eax,%ds
mov %eax,%es
mov %eax,%ss
@@ -93,11 +100,17 @@ ENTRY(pvh_start_xen)
mov %eax, %cr0
/* Jump to 64-bit mode. */
- ljmp $__KERNEL_CS, $_pa(1f)
+ ljmp $PVH_CS_SEL, $_pa(1f)
/* 64-bit entry point. */
.code64
1:
+ /* Set base address in stack canary descriptor. */
+ mov $MSR_GS_BASE,%ecx
+ mov $_pa(canary), %eax
+ xor %edx, %edx
+ wrmsr
+
call xen_prepare_pvh
/* startup_64 expects boot_params in %rsi. */
@@ -107,6 +120,17 @@ ENTRY(pvh_start_xen)
#else /* CONFIG_X86_64 */
+ /* Set base address in stack canary descriptor. */
+ movl $_pa(gdt_start),%eax
+ movl $_pa(canary),%ecx
+ movw %cx, (PVH_GDT_ENTRY_CANARY * 8) + 2(%eax)
+ shrl $16, %ecx
+ movb %cl, (PVH_GDT_ENTRY_CANARY * 8) + 4(%eax)
+ movb %ch, (PVH_GDT_ENTRY_CANARY * 8) + 7(%eax)
+
+ mov $PVH_CANARY_SEL,%eax
+ mov %eax,%gs
+
call mk_early_pgtbl_32
mov $_pa(initial_page_table), %eax
@@ -116,13 +140,13 @@ ENTRY(pvh_start_xen)
or $(X86_CR0_PG | X86_CR0_PE), %eax
mov %eax, %cr0
- ljmp $__BOOT_CS, $1f
+ ljmp $PVH_CS_SEL, $1f
1:
call xen_prepare_pvh
mov $_pa(pvh_bootparams), %esi
/* startup_32 doesn't expect paging and PAE to be on. */
- ljmp $__BOOT_CS, $_pa(2f)
+ ljmp $PVH_CS_SEL, $_pa(2f)
2:
mov %cr0, %eax
and $~X86_CR0_PG, %eax
@@ -131,7 +155,7 @@ ENTRY(pvh_start_xen)
and $~X86_CR4_PAE, %eax
mov %eax, %cr4
- ljmp $__BOOT_CS, $_pa(startup_32)
+ ljmp $PVH_CS_SEL, $_pa(startup_32)
#endif
END(pvh_start_xen)
@@ -143,16 +167,19 @@ gdt:
.word 0
gdt_start:
.quad 0x0000000000000000 /* NULL descriptor */
- .quad 0x0000000000000000 /* reserved */
#ifdef CONFIG_X86_64
- .quad GDT_ENTRY(0xa09a, 0, 0xfffff) /* __KERNEL_CS */
+ .quad GDT_ENTRY(0xa09a, 0, 0xfffff) /* PVH_CS_SEL */
#else
- .quad GDT_ENTRY(0xc09a, 0, 0xfffff) /* __KERNEL_CS */
+ .quad GDT_ENTRY(0xc09a, 0, 0xfffff) /* PVH_CS_SEL */
#endif
- .quad GDT_ENTRY(0xc092, 0, 0xfffff) /* __KERNEL_DS */
+ .quad GDT_ENTRY(0xc092, 0, 0xfffff) /* PVH_DS_SEL */
+ .quad GDT_ENTRY(0x4090, 0, 0x18) /* PVH_CANARY_SEL */
gdt_end:
- .balign 4
+ .balign 16
+canary:
+ .fill 48, 1, 0
+
early_stack:
.fill 256, 1, 0
early_stack_end:
diff --git a/drivers/net/xen-netfront.c b/drivers/net/xen-netfront.c
index 4dd0668003e7..679da1abd73c 100644
--- a/drivers/net/xen-netfront.c
+++ b/drivers/net/xen-netfront.c
@@ -564,7 +564,7 @@ static u16 xennet_select_queue(struct net_device *dev, struct sk_buff *skb,
#define MAX_XEN_SKB_FRAGS (65536 / XEN_PAGE_SIZE + 1)
-static int xennet_start_xmit(struct sk_buff *skb, struct net_device *dev)
+static netdev_tx_t xennet_start_xmit(struct sk_buff *skb, struct net_device *dev)
{
struct netfront_info *np = netdev_priv(dev);
struct netfront_stats *tx_stats = this_cpu_ptr(np->tx_stats);
diff --git a/drivers/xen/privcmd.c b/drivers/xen/privcmd.c
index 1c909183c42a..8ae0349d9f0a 100644
--- a/drivers/xen/privcmd.c
+++ b/drivers/xen/privcmd.c
@@ -33,6 +33,7 @@
#include <xen/xen.h>
#include <xen/privcmd.h>
#include <xen/interface/xen.h>
+#include <xen/interface/memory.h>
#include <xen/interface/hvm/dm_op.h>
#include <xen/features.h>
#include <xen/page.h>
@@ -722,6 +723,134 @@ static long privcmd_ioctl_restrict(struct file *file, void __user *udata)
return 0;
}
+struct remap_pfn {
+ struct mm_struct *mm;
+ struct page **pages;
+ pgprot_t prot;
+ unsigned long i;
+};
+
+static int remap_pfn_fn(pte_t *ptep, pgtable_t token, unsigned long addr,
+ void *data)
+{
+ struct remap_pfn *r = data;
+ struct page *page = r->pages[r->i];
+ pte_t pte = pte_mkspecial(pfn_pte(page_to_pfn(page), r->prot));
+
+ set_pte_at(r->mm, addr, ptep, pte);
+ r->i++;
+
+ return 0;
+}
+
+static long privcmd_ioctl_mmap_resource(struct file *file, void __user *udata)
+{
+ struct privcmd_data *data = file->private_data;
+ struct mm_struct *mm = current->mm;
+ struct vm_area_struct *vma;
+ struct privcmd_mmap_resource kdata;
+ xen_pfn_t *pfns = NULL;
+ struct xen_mem_acquire_resource xdata;
+ int rc;
+
+ if (copy_from_user(&kdata, udata, sizeof(kdata)))
+ return -EFAULT;
+
+ /* If restriction is in place, check the domid matches */
+ if (data->domid != DOMID_INVALID && data->domid != kdata.dom)
+ return -EPERM;
+
+ down_write(&mm->mmap_sem);
+
+ vma = find_vma(mm, kdata.addr);
+ if (!vma || vma->vm_ops != &privcmd_vm_ops) {
+ rc = -EINVAL;
+ goto out;
+ }
+
+ pfns = kcalloc(kdata.num, sizeof(*pfns), GFP_KERNEL);
+ if (!pfns) {
+ rc = -ENOMEM;
+ goto out;
+ }
+
+ if (xen_feature(XENFEAT_auto_translated_physmap)) {
+ unsigned int nr = DIV_ROUND_UP(kdata.num, XEN_PFN_PER_PAGE);
+ struct page **pages;
+ unsigned int i;
+
+ rc = alloc_empty_pages(vma, nr);
+ if (rc < 0)
+ goto out;
+
+ pages = vma->vm_private_data;
+ for (i = 0; i < kdata.num; i++) {
+ xen_pfn_t pfn =
+ page_to_xen_pfn(pages[i / XEN_PFN_PER_PAGE]);
+
+ pfns[i] = pfn + (i % XEN_PFN_PER_PAGE);
+ }
+ } else
+ vma->vm_private_data = PRIV_VMA_LOCKED;
+
+ memset(&xdata, 0, sizeof(xdata));
+ xdata.domid = kdata.dom;
+ xdata.type = kdata.type;
+ xdata.id = kdata.id;
+ xdata.frame = kdata.idx;
+ xdata.nr_frames = kdata.num;
+ set_xen_guest_handle(xdata.frame_list, pfns);
+
+ xen_preemptible_hcall_begin();
+ rc = HYPERVISOR_memory_op(XENMEM_acquire_resource, &xdata);
+ xen_preemptible_hcall_end();
+
+ if (rc)
+ goto out;
+
+ if (xen_feature(XENFEAT_auto_translated_physmap)) {
+ struct remap_pfn r = {
+ .mm = vma->vm_mm,
+ .pages = vma->vm_private_data,
+ .prot = vma->vm_page_prot,
+ };
+
+ rc = apply_to_page_range(r.mm, kdata.addr,
+ kdata.num << PAGE_SHIFT,
+ remap_pfn_fn, &r);
+ } else {
+ unsigned int domid =
+ (xdata.flags & XENMEM_rsrc_acq_caller_owned) ?
+ DOMID_SELF : kdata.dom;
+ int num;
+
+ num = xen_remap_domain_mfn_array(vma,
+ kdata.addr & PAGE_MASK,
+ pfns, kdata.num, (int *)pfns,
+ vma->vm_page_prot,
+ domid,
+ vma->vm_private_data);
+ if (num < 0)
+ rc = num;
+ else if (num != kdata.num) {
+ unsigned int i;
+
+ for (i = 0; i < num; i++) {
+ rc = pfns[i];
+ if (rc < 0)
+ break;
+ }
+ } else
+ rc = 0;
+ }
+
+out:
+ up_write(&mm->mmap_sem);
+ kfree(pfns);
+
+ return rc;
+}
+
static long privcmd_ioctl(struct file *file,
unsigned int cmd, unsigned long data)
{
@@ -753,6 +882,10 @@ static long privcmd_ioctl(struct file *file,
ret = privcmd_ioctl_restrict(file, udata);
break;
+ case IOCTL_PRIVCMD_MMAP_RESOURCE:
+ ret = privcmd_ioctl_mmap_resource(file, udata);
+ break;
+
default:
break;
}
@@ -801,7 +934,7 @@ static void privcmd_close(struct vm_area_struct *vma)
kfree(pages);
}
-static int privcmd_fault(struct vm_fault *vmf)
+static vm_fault_t privcmd_fault(struct vm_fault *vmf)
{
printk(KERN_DEBUG "privcmd_fault: vma=%p %lx-%lx, pgoff=%lx, uv=%p\n",
vmf->vma, vmf->vma->vm_start, vmf->vma->vm_end,
diff --git a/drivers/xen/xenbus/xenbus_probe.c b/drivers/xen/xenbus/xenbus_probe.c
index ec9eb4fba59c..f2088838f690 100644
--- a/drivers/xen/xenbus/xenbus_probe.c
+++ b/drivers/xen/xenbus/xenbus_probe.c
@@ -710,7 +710,7 @@ static int __init xenstored_local_init(void)
if (!page)
goto out_err;
- xen_store_gfn = xen_start_info->store_mfn = virt_to_gfn((void *)page);
+ xen_store_gfn = virt_to_gfn((void *)page);
/* Next allocate a local port which xenstored can bind to */
alloc_unbound.dom = DOMID_SELF;
@@ -722,8 +722,7 @@ static int __init xenstored_local_init(void)
goto out_err;
BUG_ON(err);
- xen_store_evtchn = xen_start_info->store_evtchn =
- alloc_unbound.port;
+ xen_store_evtchn = alloc_unbound.port;
return 0;
diff --git a/include/uapi/xen/privcmd.h b/include/uapi/xen/privcmd.h
index 39d3e7b8e993..d2029556083e 100644
--- a/include/uapi/xen/privcmd.h
+++ b/include/uapi/xen/privcmd.h
@@ -89,6 +89,15 @@ struct privcmd_dm_op {
const struct privcmd_dm_op_buf __user *ubufs;
};
+struct privcmd_mmap_resource {
+ domid_t dom;
+ __u32 type;
+ __u32 id;
+ __u32 idx;
+ __u64 num;
+ __u64 addr;
+};
+
/*
* @cmd: IOCTL_PRIVCMD_HYPERCALL
* @arg: &privcmd_hypercall_t
@@ -114,5 +123,7 @@ struct privcmd_dm_op {
_IOC(_IOC_NONE, 'P', 5, sizeof(struct privcmd_dm_op))
#define IOCTL_PRIVCMD_RESTRICT \
_IOC(_IOC_NONE, 'P', 6, sizeof(domid_t))
+#define IOCTL_PRIVCMD_MMAP_RESOURCE \
+ _IOC(_IOC_NONE, 'P', 7, sizeof(struct privcmd_mmap_resource))
#endif /* __LINUX_PUBLIC_PRIVCMD_H__ */
diff --git a/include/xen/interface/memory.h b/include/xen/interface/memory.h
index 583dd93b3016..4c5751c26f87 100644
--- a/include/xen/interface/memory.h
+++ b/include/xen/interface/memory.h
@@ -265,4 +265,70 @@ struct xen_remove_from_physmap {
};
DEFINE_GUEST_HANDLE_STRUCT(xen_remove_from_physmap);
+/*
+ * Get the pages for a particular guest resource, so that they can be
+ * mapped directly by a tools domain.
+ */
+#define XENMEM_acquire_resource 28
+struct xen_mem_acquire_resource {
+ /* IN - The domain whose resource is to be mapped */
+ domid_t domid;
+ /* IN - the type of resource */
+ uint16_t type;
+
+#define XENMEM_resource_ioreq_server 0
+#define XENMEM_resource_grant_table 1
+
+ /*
+ * IN - a type-specific resource identifier, which must be zero
+ * unless stated otherwise.
+ *
+ * type == XENMEM_resource_ioreq_server -> id == ioreq server id
+ * type == XENMEM_resource_grant_table -> id defined below
+ */
+ uint32_t id;
+
+#define XENMEM_resource_grant_table_id_shared 0
+#define XENMEM_resource_grant_table_id_status 1
+
+ /* IN/OUT - As an IN parameter number of frames of the resource
+ * to be mapped. However, if the specified value is 0 and
+ * frame_list is NULL then this field will be set to the
+ * maximum value supported by the implementation on return.
+ */
+ uint32_t nr_frames;
+ /*
+ * OUT - Must be zero on entry. On return this may contain a bitwise
+ * OR of the following values.
+ */
+ uint32_t flags;
+
+ /* The resource pages have been assigned to the calling domain */
+#define _XENMEM_rsrc_acq_caller_owned 0
+#define XENMEM_rsrc_acq_caller_owned (1u << _XENMEM_rsrc_acq_caller_owned)
+
+ /*
+ * IN - the index of the initial frame to be mapped. This parameter
+ * is ignored if nr_frames is 0.
+ */
+ uint64_t frame;
+
+#define XENMEM_resource_ioreq_server_frame_bufioreq 0
+#define XENMEM_resource_ioreq_server_frame_ioreq(n) (1 + (n))
+
+ /*
+ * IN/OUT - If the tools domain is PV then, upon return, frame_list
+ * will be populated with the MFNs of the resource.
+ * If the tools domain is HVM then it is expected that, on
+ * entry, frame_list will be populated with a list of GFNs
+ * that will be mapped to the MFNs of the resource.
+ * If -EIO is returned then the frame_list has only been
+ * partially mapped and it is up to the caller to unmap all
+ * the GFNs.
+ * This parameter may be NULL if nr_frames is 0.
+ */
+ GUEST_HANDLE(xen_pfn_t) frame_list;
+};
+DEFINE_GUEST_HANDLE_STRUCT(xen_mem_acquire_resource);
+
#endif /* __XEN_PUBLIC_MEMORY_H__ */
diff --git a/include/xen/interface/xen.h b/include/xen/interface/xen.h
index 4f4830ef8f93..8bfb242f433e 100644
--- a/include/xen/interface/xen.h
+++ b/include/xen/interface/xen.h
@@ -265,9 +265,10 @@
*
* PAT (bit 7 on) --> PWT (bit 3 on) and clear bit 7.
*/
-#define MMU_NORMAL_PT_UPDATE 0 /* checked '*ptr = val'. ptr is MA. */
-#define MMU_MACHPHYS_UPDATE 1 /* ptr = MA of frame to modify entry for */
-#define MMU_PT_UPDATE_PRESERVE_AD 2 /* atomically: *ptr = val | (*ptr&(A|D)) */
+#define MMU_NORMAL_PT_UPDATE 0 /* checked '*ptr = val'. ptr is MA. */
+#define MMU_MACHPHYS_UPDATE 1 /* ptr = MA of frame to modify entry for */
+#define MMU_PT_UPDATE_PRESERVE_AD 2 /* atomically: *ptr = val | (*ptr&(A|D)) */
+#define MMU_PT_UPDATE_NO_TRANSLATE 3 /* checked '*ptr = val'. ptr is MA. */
/*
* MMU EXTENDED OPERATIONS
diff --git a/include/xen/xen-ops.h b/include/xen/xen-ops.h
index fd23e42c6024..fd18c974a619 100644
--- a/include/xen/xen-ops.h
+++ b/include/xen/xen-ops.h
@@ -63,7 +63,7 @@ static inline void xen_destroy_contiguous_region(phys_addr_t pstart,
struct vm_area_struct;
/*
- * xen_remap_domain_gfn_array() - map an array of foreign frames
+ * xen_remap_domain_gfn_array() - map an array of foreign frames by gfn
* @vma: VMA to map the pages into
* @addr: Address at which to map the pages
* @gfn: Array of GFNs to map
@@ -86,6 +86,28 @@ int xen_remap_domain_gfn_array(struct vm_area_struct *vma,
unsigned domid,
struct page **pages);
+/*
+ * xen_remap_domain_mfn_array() - map an array of foreign frames by mfn
+ * @vma: VMA to map the pages into
+ * @addr: Address at which to map the pages
+ * @mfn: Array of MFNs to map
+ * @nr: Number entries in the MFN array
+ * @err_ptr: Returns per-MFN error status.
+ * @prot: page protection mask
+ * @domid: Domain owning the pages
+ * @pages: Array of pages if this domain has an auto-translated physmap
+ *
+ * @mfn and @err_ptr may point to the same buffer, the MFNs will be
+ * overwritten by the error codes after they are mapped.
+ *
+ * Returns the number of successfully mapped frames, or a -ve error
+ * code.
+ */
+int xen_remap_domain_mfn_array(struct vm_area_struct *vma,
+ unsigned long addr, xen_pfn_t *mfn, int nr,
+ int *err_ptr, pgprot_t prot,
+ unsigned int domid, struct page **pages);
+
/* xen_remap_domain_gfn_range() - map a range of foreign frames
* @vma: VMA to map the pages into
* @addr: Address at which to map the pages
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-19 13:05:36 +0000