Author: kib Date: Sun Dec 30 15:38:07 2018 New Revision: 342627 URL: https://svnweb.freebsd.org/changeset/base/342627
Log: Implement zap_vma_ptes() for managed device objects. Reviewed by: markj Discussed with: hselasky Tested by: zeising MFC after: 1 week Sponsored by: Mellanox Technologies Differential revision: https://reviews.freebsd.org/D18606 Modified: head/sys/compat/linuxkpi/common/include/linux/mm.h head/sys/compat/linuxkpi/common/src/linux_compat.c Modified: head/sys/compat/linuxkpi/common/include/linux/mm.h ============================================================================== --- head/sys/compat/linuxkpi/common/include/linux/mm.h Sun Dec 30 15:34:12 2018 (r342626) +++ head/sys/compat/linuxkpi/common/include/linux/mm.h Sun Dec 30 15:38:07 2018 (r342627) @@ -180,12 +180,8 @@ apply_to_page_range(struct mm_struct *mm, unsigned lon return (-ENOTSUP); } -static inline int -zap_vma_ptes(struct vm_area_struct *vma, unsigned long address, - unsigned long size) -{ - return (-ENOTSUP); -} +int zap_vma_ptes(struct vm_area_struct *vma, unsigned long address, + unsigned long size); static inline int remap_pfn_range(struct vm_area_struct *vma, unsigned long addr, Modified: head/sys/compat/linuxkpi/common/src/linux_compat.c ============================================================================== --- head/sys/compat/linuxkpi/common/src/linux_compat.c Sun Dec 30 15:34:12 2018 (r342626) +++ head/sys/compat/linuxkpi/common/src/linux_compat.c Sun Dec 30 15:38:07 2018 (r342627) @@ -672,6 +672,25 @@ static struct cdev_pager_ops linux_cdev_pager_ops[2] = }, }; +int +zap_vma_ptes(struct vm_area_struct *vma, unsigned long address, + unsigned long size) +{ + vm_object_t obj; + vm_page_t m; + + obj = vma->vm_obj; + if (obj == NULL || (obj->flags & OBJ_UNMANAGED) != 0) + return (-ENOTSUP); + VM_OBJECT_RLOCK(obj); + for (m = vm_page_find_least(obj, OFF_TO_IDX(address)); + m != NULL && m->pindex < OFF_TO_IDX(address + size); + m = TAILQ_NEXT(m, listq)) + pmap_remove_all(m); + VM_OBJECT_RUNLOCK(obj); + return (0); +} + #define OPW(fp,td,code) ({ \ struct file *__fpop; \ __typeof(code) __retval; \ _______________________________________________ [email protected] mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "[email protected]"
