diff options
Diffstat (limited to 'drivers/iommu/iommufd/io_pagetable.h')
| -rw-r--r-- | drivers/iommu/iommufd/io_pagetable.h | 28 |
1 files changed, 24 insertions, 4 deletions
diff --git a/drivers/iommu/iommufd/io_pagetable.h b/drivers/iommu/iommufd/io_pagetable.h index 0ec3509b7e33..10c928a9a463 100644 --- a/drivers/iommu/iommufd/io_pagetable.h +++ b/drivers/iommu/iommufd/io_pagetable.h @@ -6,8 +6,8 @@ #define __IO_PAGETABLE_H #include <linux/interval_tree.h> -#include <linux/mutex.h> #include <linux/kref.h> +#include <linux/mutex.h> #include <linux/xarray.h> #include "iommufd_private.h" @@ -173,6 +173,12 @@ enum { IOPT_PAGES_ACCOUNT_NONE = 0, IOPT_PAGES_ACCOUNT_USER = 1, IOPT_PAGES_ACCOUNT_MM = 2, + IOPT_PAGES_ACCOUNT_MODE_NUM = 3, +}; + +enum iopt_address_type { + IOPT_ADDRESS_USER = 0, + IOPT_ADDRESS_FILE = 1, }; /* @@ -195,7 +201,14 @@ struct iopt_pages { struct task_struct *source_task; struct mm_struct *source_mm; struct user_struct *source_user; - void __user *uptr; + enum iopt_address_type type; + union { + void __user *uptr; /* IOPT_ADDRESS_USER */ + struct { /* IOPT_ADDRESS_FILE */ + struct file *file; + unsigned long start; + }; + }; bool writable:1; u8 account_mode; @@ -206,8 +219,10 @@ struct iopt_pages { struct rb_root_cached domains_itree; }; -struct iopt_pages *iopt_alloc_pages(void __user *uptr, unsigned long length, - bool writable); +struct iopt_pages *iopt_alloc_user_pages(void __user *uptr, + unsigned long length, bool writable); +struct iopt_pages *iopt_alloc_file_pages(struct file *file, unsigned long start, + unsigned long length, bool writable); void iopt_release_pages(struct kref *kref); static inline void iopt_put_pages(struct iopt_pages *pages) { @@ -238,4 +253,9 @@ struct iopt_pages_access { unsigned int users; }; +struct pfn_reader_user; + +int iopt_pages_update_pinned(struct iopt_pages *pages, unsigned long npages, + bool inc, struct pfn_reader_user *user); + #endif |