diff options
27 files changed, 266 insertions, 97 deletions
diff --git a/arch/ia64/include/asm/xen/interface.h b/arch/ia64/include/asm/xen/interface.h index 09d5f7fd9db..3d52a5bbd85 100644 --- a/arch/ia64/include/asm/xen/interface.h +++ b/arch/ia64/include/asm/xen/interface.h @@ -67,6 +67,10 @@ #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); @@ -79,7 +83,6 @@ DEFINE_GUEST_HANDLE(void); 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 @@ -265,6 +268,8 @@ typedef struct xen_callback xen_callback_t; #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) diff --git a/arch/x86/include/asm/xen/interface.h b/arch/x86/include/asm/xen/interface.h index cbf0c9d50b9..555f94d3637 100644 --- a/arch/x86/include/asm/xen/interface.h +++ b/arch/x86/include/asm/xen/interface.h @@ -47,6 +47,10 @@ #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); @@ -57,6 +61,7 @@ DEFINE_GUEST_HANDLE(long); 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 @@ -121,6 +126,8 @@ struct arch_shared_info { #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 diff --git a/arch/x86/xen/apic.c b/arch/x86/xen/apic.c index ec57bd3818a..7005ced5d1a 100644 --- a/arch/x86/xen/apic.c +++ b/arch/x86/xen/apic.c @@ -6,8 +6,9 @@ #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; diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c index 9642d4a3860..2766746de27 100644 --- a/arch/x86/xen/enlighten.c +++ b/arch/x86/xen/enlighten.c @@ -80,6 +80,8 @@ #include "smp.h" #include "multicalls.h" +#include <xen/events.h> + EXPORT_SYMBOL_GPL(hypercall_page); DEFINE_PER_CPU(struct vcpu_info *, xen_vcpu); diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c index 7a769b7526c..dfc900471ae 100644 --- a/arch/x86/xen/mmu.c +++ b/arch/x86/xen/mmu.c @@ -2333,6 +2333,9 @@ int xen_remap_domain_mfn_range(struct vm_area_struct *vma, 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)) == @@ -2351,8 +2354,8 @@ int xen_remap_domain_mfn_range(struct vm_area_struct *vma, 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; diff --git a/arch/x86/xen/pci-swiotlb-xen.c b/arch/x86/xen/pci-swiotlb-xen.c index 967633ad98c..1ab45941502 100644 --- a/arch/x86/xen/pci-swiotlb-xen.c +++ b/arch/x86/xen/pci-swiotlb-xen.c @@ -8,6 +8,7 @@ #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 = { @@ -62,6 +63,6 @@ void __init pci_xen_swiotlb_init(void) } } IOMMU_INIT_FINISH(pci_xen_swiotlb_detect, - 0, + NULL, pci_xen_swiotlb_init, - 0); + NULL); diff --git a/arch/x86/xen/platform-pci-unplug.c b/arch/x86/xen/platform-pci-unplug.c index ffcf2615640..0a7852483ff 100644 --- a/arch/x86/xen/platform-pci-unplug.c +++ b/arch/x86/xen/platform-pci-unplug.c @@ -24,6 +24,7 @@ #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 diff --git a/arch/x86/xen/xen-head.S b/arch/x86/xen/xen-head.S index aaa7291c925..7faed5869e5 100644 --- a/arch/x86/xen/xen-head.S +++ b/arch/x86/xen/xen-head.S @@ -28,9 +28,61 @@ ENTRY(startup_xen) __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") diff --git a/drivers/pci/xen-pcifront.c b/drivers/pci/xen-pcifront.c index d6cc62cb4cf..a4d901def8f 100644 --- a/drivers/pci/xen-pcifront.c +++ b/drivers/pci/xen-pcifront.c @@ -236,7 +236,7 @@ static int pcifront_bus_write(struct pci_bus *bus, unsigned int devfn, 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, }; diff --git a/drivers/tty/hvc/hvc_xen.c b/drivers/tty/hvc/hvc_xen.c index 1e456dca4f6..2944ff88fdc 100644 --- a/drivers/tty/hvc/hvc_xen.c +++ b/drivers/tty/hvc/hvc_xen.c @@ -21,6 +21,7 @@ #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> @@ -35,6 +36,7 @@ #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> diff --git a/drivers/xen/events.c b/drivers/xen/events.c index 7595581d032..c60d1629c91 100644 --- a/drivers/xen/events.c +++ b/drivers/xen/events.c @@ -373,11 +373,22 @@ static void unmask_evtchn(int port) { 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 { @@ -390,7 +401,7 @@ static void unmask_evtchn(int port) * '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; @@ -831,6 +842,7 @@ int bind_evtchn_to_irq(unsigned int evtchn) 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); diff --git a/drivers/xen/gntdev.c b/drivers/xen/gntdev.c index 1ffd03bf8e1..163b7e985ed 100644 --- a/drivers/xen/gntdev.c +++ b/drivers/xen/gntdev.c @@ -445,7 +445,7 @@ static void mn_release(struct mmu_notifier *mn, 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, diff --git a/drivers/xen/grant-table.c b/drivers/xen/grant-table.c index 0bfc1ef1125..eea81cf8a2a 100644 --- a/drivers/xen/grant-table.c +++ b/drivers/xen/grant-table.c @@ -47,6 +47,7 @@ #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> @@ -285,10 +286,9 @@ int gnttab_grant_foreign_access(domid_t domid, unsigned long frame, } 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; @@ -345,9 +345,9 @@ bool gnttab_subpage_grants_available(void) } 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; diff --git a/drivers/xen/privcmd.c b/drivers/xen/privcmd.c index ccee0f16bcf..ef6389580b8 100644 --- a/drivers/xen/privcmd.c +++ b/drivers/xen/privcmd.c @@ -76,7 +76,7 @@ static void free_page_list(struct list_head *pages) */ static int gather_array(struct list_head *pagelist, unsigned nelem, size_t size, - void __user *data) + const void __user *data) { unsigned pageidx; void *pagedata; @@ -246,61 +246,117 @@ struct mmap_batch_state { 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); @@ -315,24 +371,37 @@ static long privcmd_ioctl_mmap_batch(void __user *udata) 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; @@ -354,7 +423,11 @@ static long privcmd_ioctl(struct file *file, 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: @@ -380,10 +453,6 @@ static struct vm_operations_struct privcmd_vm_ops = { 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; diff --git a/drivers/xen/swiotlb-xen.c b/drivers/xen/swiotlb-xen.c index 4d519488d30..2e74dba6a04 100644 --- a/drivers/xen/swiotlb-xen.c +++ b/drivers/xen/swiotlb-xen.c @@ -52,7 +52,7 @@ static unsigned long xen_io_tlb_nslabs; * 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) { @@ -466,14 +466,6 @@ xen_swiotlb_map_sg_attrs(struct device *hwdev, struct scatterlist *sgl, } 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. @@ -494,14 +486,6 @@ xen_swiotlb_unmap_sg_attrs(struct device *hwdev, struct scatterlist *sgl, } 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. diff --git a/drivers/xen/sys-hypervisor.c b/drivers/xen/sys-hypervisor.c index fdb6d229c9b..5e5ad7e2885 100644 --- a/drivers/xen/sys-hypervisor.c +++ b/drivers/xen/sys-hypervisor.c @@ -114,7 +114,7 @@ static void xen_sysfs_version_destroy(void) /* 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; @@ -135,6 +135,17 @@ static ssize_t uuid_show(struct hyp_sysfs_attr *attr, char *buffer) 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) diff --git a/drivers/xen/tmem.c b/drivers/xen/tmem.c index 89f264c6742..144564e5eb2 100644 --- a/drivers/xen/tmem.c +++ b/drivers/xen/tmem.c @@ -21,6 +21,7 @@ #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 diff --git a/drivers/xen/xenbus/xenbus_dev_backend.c b/drivers/xen/xenbus/xenbus_dev_backend.c index be738c43104..d7300080076 100644 --- a/drivers/xen/xenbus/xenbus_dev_backend.c +++ b/drivers/xen/xenbus/xenbus_dev_backend.c @@ -107,7 +107,7 @@ static int xenbus_backend_mmap(struct file *file, struct vm_area_struct *vma) 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, diff --git a/drivers/xen/xenbus/xenbus_probe.c b/drivers/xen/xenbus/xenbus_probe.c index b793723e724..91d3d6544a7 100644 --- a/drivers/xen/xenbus/xenbus_probe.c +++ b/drivers/xen/xenbus/xenbus_probe.c @@ -324,8 +324,8 @@ static int cmp_dev(struct device *dev, void *data) 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 }; diff --git a/drivers/xen/xenbus/xenbus_probe_frontend.c b/drivers/xen/xenbus/xenbus_probe_frontend.c index a31b54d4883..3159a37d966 100644 --- a/drivers/xen/xenbus/xenbus_probe_frontend.c +++ b/drivers/xen/xenbus/xenbus_probe_frontend.c @@ -21,6 +21,7 @@ #include <xen/xenbus.h> #include <xen/events.h> #include <xen/page.h> +#include <xen/xen.h> #include <xen/platform_pci.h> diff --git a/include/xen/interface/grant_table.h b/include/xen/interface/grant_table.h index a17d84433e6..7da811bdd55 100644 --- a/include/xen/interface/grant_table.h +++ b/include/xen/interface/grant_table.h @@ -338,7 +338,7 @@ DEFINE_GUEST_HANDLE_STRUCT(gnttab_dump_table); #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. */ @@ -375,7 +375,7 @@ struct gnttab_copy { struct { union { grant_ref_t ref; - unsigned long gmfn; + xen_pfn_t gmfn; } u; domid_t domid; uint16_t offset; diff --git a/include/xen/interface/memory.h b/include/xen/interface/memory.h index eac3ce15371..d8e33a93ea4 100644 --- a/include/xen/interface/memory.h +++ b/include/xen/interface/memory.h @@ -31,7 +31,7 @@ struct xen_memory_reservation { * 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; @@ -130,7 +130,7 @@ struct xen_machphys_mfn_list { * 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 @@ -163,6 +163,9 @@ struct xen_add_to_physmap { /* 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 */ @@ -172,7 +175,7 @@ struct xen_add_to_physmap { 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); diff --git a/include/xen/interface/platform.h b/include/xen/interface/platform.h index 61fa6616098..a3275a850e5 100644 --- a/include/xen/interface/platform.h +++ b/include/xen/interface/platform.h @@ -54,7 +54,7 @@ DEFINE_GUEST_HANDLE_STRUCT(xenpf_settime_t); #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. */ @@ -84,7 +84,7 @@ struct xenpf_read_memtype { /* IN variables. */ uint32_t reg; /* OUT variables. */ - unsigned long mfn; + xen_pfn_t mfn; uint64_t nr_mfns; uint32_t type; }; diff --git a/include/xen/interface/version.h b/include/xen/interface/version.h index e8b6519d47e..dd58cf5ea3e 100644 --- a/include/xen/interface/version.h +++ b/include/xen/interface/version.h @@ -60,4 +60,7 @@ struct xen_feature_info { /* 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__ */ diff --git a/include/xen/interface/xen.h b/include/xen/interface/xen.h index 0801468f9ab..1e0df6b7d3b 100644 --- a/include/xen/interface/xen.h +++ b/include/xen/interface/xen.h @@ -10,7 +10,6 @@ #define __XEN_PUBLIC_XEN_H__ #include <asm/xen/interface.h> -#include <asm/pvclock-abi.h> /* * XEN "SYSTEM CALLS" (a.k.a. HYPERCALLS). @@ -190,7 +189,7 @@ struct mmuext_op { 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; @@ -430,11 +429,11 @@ struct start_info { 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 { diff --git a/include/xen/privcmd.h b/include/xen/privcmd.h index 17857fb4d55..a85316811d7 100644 --- a/include/xen/privcmd.h +++ b/include/xen/privcmd.h @@ -35,8 +35,7 @@ #include <linux/types.h> #include <linux/compiler.h> - -typedef unsigned long xen_pfn_t; +#include <xen/interface/xen.h> struct privcmd_hypercall { __u64 op; @@ -59,13 +58,33 @@ struct privcmd_mmapbatch { 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)) @@ -73,5 +92,7 @@ struct privcmd_mmapbatch { _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__ */ diff --git a/include/xen/swiotlb-xen.h b/include/xen/swiotlb-xen.h index 4f4d449f00f..c050b6b9de3 100644 --- a/include/xen/swiotlb-xen.h +++ b/include/xen/swiotlb-xen.h @@ -23,15 +23,6 @@ extern dma_addr_t xen_swiotlb_map_page(struct device *dev, struct page *page, 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, |