virt内核态虚拟地址与phys物理内存地址是一个线性偏移关系,二者计算公式是 virt=phys-PHYS_OFFSET + PAGE_OFFSET。二者的转换关系可直接调用 __virt_to_phys 和 __phys_to_virt 两个内核宏。PHYS_OFFSET 代表物理内存首地址,PAGE_OFFSET是基于体系架构的偏移值,不同的架构不一样 我们在内核里调用kmalloc返回的就...
linux内存管理中的page 取得了物理地址(虽然内核在虚拟地址中是在高地址的,但是在物理地址中是从0开始的,所以这里也是从0开始) ? 1 2 #definevirt_to_page(kaddr)pfn_to_page..._SHIFT)) #definepage_to_phys(page) (page_to_pfn(page) <<PAGE_SHIFT) 这两个宏的功能分别是将structpage*和物理地址之...
Generally, being able to talk but not sing during an activity would make it moderate (中等的)intensity.(你可以通过心率和运动时呼吸的困难程度来计算运动的强度。一般来说,在活动中能够 说话但不能唱歌会使活动强度适中。 )”可知,做中等强度的运动时可以谈话但是不能唱歌。故选A项。 【13题详解】 推理...
Last December, the Beijing Municipal Education Commission made great changes to physical education in this city.The commission now has more progress assessments for P. E. classes in the hope that children will start physical exercise at an carlier age and do it more often.Students also have more...
The aim of this study was to document the frequency and nature of changes in SIJ surfaces of Thoroughbred (TB) racehorses and to correlate gross morphology and marginal new bone formation to age, body weight and history of back pain.Goff, L...
Ilizarov Technique For Correction Of Acquired Radial Club Hand Deformity Secondary To Radia Non-Union With Or Without Epiphyseal Growth Arrest-Report Of Two Cases[AB_STRACT]N. A MirG. M WaniM. A HalwaiK. A Kangoo
The last round of content for The Binding of Isaac is officially on the way. We now know that The Binding of Isaac: Repentance is set to launch sometime in Q3 2021, and there will be both a physical and digital version. Check out full details on the release below....
第二节(共5小题;每小题2.5分.满分12.5分)阅读下面短文,从短文后的选项中选出可以填入空白处的最佳选exemising to keep your body physically an d mentally fit项 选项中有两项为多余选项:_39___ This is specifically important when you feel that the routines If you want to stay healthy, you nee ...
pool A. to escape, either physically or mentally2.leisurely B. to exchange one thing for the other thing3. linger C. to take turns driving each other to work4. evade D. an agreement to end a dispute by offering someone money5.settlement E. in an unhurried way6.trade F. to continue...
短文填空智力极限运动 A non-traditional sport, such as climbing, can really push us to our physical limits. 1., have you ever done anything that pushes you to your mental limits? Around the world, 2.(student) take part in difficult academic(学术的) competitions, such as Math Olympi-ads(...