paging

问题 I'm writing a memory manager for my kernel (32 bit x86) In the course of this... I'm facing a bit of a dilemma.... Description of virtual memory map: Identity map of first 4 Mb Virtual address 0xC0000000 mapped to physical address 0x100000 (Also a 4 Mb map) My page directory is at physical address 0x9c000. My page table 1 is at physical address 0x9d000. My page table 2 is at physical addres 0x9e000. (I need only two page tables here :) ... These correspond to the identity map and higher

问题 I am building a kind of book app (Holy Quran )... user will go for a list of Surahs, each Surah contains around 5 - 50 pages. I managed navigating user from the list to first page of each Surahs.. and through getting an api request data for first page will be shown and this is the code in the showScreen const [quran, setQuran] = useState([]); const page = navigation.getParam('page'); const name = navigation.getParam('name'); let pageNumber = page; useEffect(() => { Quran(); }, []); const

问题 I am building a kind of book app (Holy Quran )... user will go for a list of Surahs, each Surah contains around 5 - 50 pages. I managed navigating user from the list to first page of each Surahs.. and through getting an api request data for first page will be shown and this is the code in the showScreen const [quran, setQuran] = useState([]); const page = navigation.getParam('page'); const name = navigation.getParam('name'); let pageNumber = page; useEffect(() => { Quran(); }, []); const

问题 In linux x86 paging. each process has it's own page directory. page table walking starts with page directory which is pointed by CR3. every process shares the kernel page directory content assuming three sentences are correct, let's say some process enters kernel mode and updates his kernel page directory content(address mapping, access rights, etc...) Question. since kernel address spaces is globally shared among processes, this update has to be synchronized with other process's page

问题 From a software point of view, what is the latency between an instruction that dirties a memory page and when the core actually marks the page dirty in the Page Table Entry (PTE)? In other words, if an instruction dirties a page, can the very next instruction read the PTE and see the dirty bit set? I don't care about the actual elapsed cycles, only if there is a software visible window in which the dirty bit is not yet set. I can't seem to find any guarantees in the reference manuals. 回答1:

问题 I have added ReflectionIT.Mvc.Paging from NuGet Link but I have a problem. In a controller i have 2 methods, Index and Organizations. When I am on the view of Orginizations and press page with number "2" in controller goes to index and not on Organizations method. How to force it to go on a method I want or to extend this @await this.Component.InvokeAsync("Pager", new { pagingList = this.Model }) to pass method name as parameter? Controller: public IActionResult Index() { return View(); }

问题 I'm looking to create a GridView with the paging hidden, but paging still allowed. Then, I'd like to create my own paging buttons external the GridView and have those page through the data. Essentially, this is to create a scrollable gridview with a sticky pager at the bottom that I can customize to fit the look, feel, and functionality required in my site. Does anyone have any ideas on how to do this? I haven't found much in my searching. 回答1: You can use a repeater with custom paging or

问题 I'm looking to create a GridView with the paging hidden, but paging still allowed. Then, I'd like to create my own paging buttons external the GridView and have those page through the data. Essentially, this is to create a scrollable gridview with a sticky pager at the bottom that I can customize to fit the look, feel, and functionality required in my site. Does anyone have any ideas on how to do this? I haven't found much in my searching. 回答1: You can use a repeater with custom paging or

问题 I am trying to add a syscall in a module. My rationale is: This is for a research project, so the exact implementation does not matter. Adding syscalls in the kernel-core takes a prohibitively long time to re-compile. I can suck up compiling once with an expanded syscall table, but not every time. Even with incremental compiling, linking and archiving the final binary takes a long time. Since the project is timing sensitive, using kprobes to intercept the syscall handler would slow down the

问题 I am trying to understand paging and am running into some problems. I've found an example problem that I cannot make sense of, and was hoping that someone could set me in the correct direction: The theoretical system in question has 64K (2^16) bytes of memory. The page size is 4K bytes (2^12), and the page table has 15 entires. Foreach entry in the page table for a theoretical process X, there is page number, a present/absent bit, and a page frame number. I understand that the look-up of the