paging

问题 Is it possible to have paging enabled in real mode, for example during BIOS execution. If it is enabled what is the use of having paging in real mode 回答1: No , From Intel Manual Vol 3A Chapter 2.5 Paging (bit 31 of CR0) — Enables paging when set; disables paging when clear. When paging is disabled, all linear addresses are treated as physical addresses. The PG flag has no effect if the PE flag (bit 0 of register CR0) is not also set ; setting the PG flag when the PE flag is clear causes a

问题 I am working with DataTables which is having paging enabled and shows 'next/previous' buttons with page-numbers(1,2,3,4,5,...,10). I am trying to change this to only 'next/previous' in smaller devices (less than 768px) using pagingType option provided by plugin. I have tried using responsive method but its not working: responsive: { pagingType: "simple" } I can have solution using following css but I want not to generate those buttons inside DOM .dataTables_paginate ul.pagination .paginate

问题 Thanks to the following code i create and add images - as thumbnails - to the FlowLayoutPanel. The implementation is pretty simple. I read the available images within the directory and call the following sub procedure. Private Sub LoadImages(ByVal FlowPanel As FlowLayoutPanel, ByVal fi As FileInfo) Pedit = New DevExpress.XtraEditors.PictureEdit Pedit.Width = txtIconsWidth.EditValue Pedit.Height = Pedit.Width / (4 / 3) Dim fs As System.IO.FileStream fs = New System.IO.FileStream(fi.FullName,

问题 I'm attending operating systems course on my university, one of the tasks we were given is to implement simple malloc using mmap. Now that i got it working i tried to use valgrind to detect any bugs left. And regarldess of freeing memory or not, valgrind doesnt see any memory leaks. As an example consider following C code: int main() { int psize = getpagesize(),i; int *ptr = mmap(NULL, psize, PROT_WRITE | PROT_READ, MAP_ANONYMOUS | MAP_PRIVATE, -1, 0); for(i = 0; i < psize/4; i++) ptr[i] = i;

问题 I'm attending operating systems course on my university, one of the tasks we were given is to implement simple malloc using mmap. Now that i got it working i tried to use valgrind to detect any bugs left. And regarldess of freeing memory or not, valgrind doesnt see any memory leaks. As an example consider following C code: int main() { int psize = getpagesize(),i; int *ptr = mmap(NULL, psize, PROT_WRITE | PROT_READ, MAP_ANONYMOUS | MAP_PRIVATE, -1, 0); for(i = 0; i < psize/4; i++) ptr[i] = i;

问题 I find that during TLB missing process, some architecture use hardware to handle it while some use the OS. But when it comes to page fault, most of them use the OS instead of hardware. I tried to find the answer but didn't find any article explains why. Could anyone help with this? Thanks. 回答1: If the hardware could handle it on its own, it wouldn't need to fault. The whole point is that the OS hasn't wired the page into the hardware page tables, e.g. because it's not actually in memory at

问题 I find that during TLB missing process, some architecture use hardware to handle it while some use the OS. But when it comes to page fault, most of them use the OS instead of hardware. I tried to find the answer but didn't find any article explains why. Could anyone help with this? Thanks. 回答1: If the hardware could handle it on its own, it wouldn't need to fault. The whole point is that the OS hasn't wired the page into the hardware page tables, e.g. because it's not actually in memory at

问题 I have a paging grid with local store, and I want to apply a filter using my own function. But it is failed. From internet recommendations I used remoteFilter: true and enablePaging: true options in store config. And it works perfectly if I filter store with specific configuration object: store.filter([{ property: 'age', value: 12 }]); unfortunately it is not enough to build complex filter criteria. In accordance with documentation there is a special filterBy method in store object to use

问题 I'm trying to disable paging completely with an LKM (don't ask me why I'm just experimenting). I've tried just changing the value directly with the LKM. void disable_paging(void) { asm("movq %cr0, %rax\n\t" "movq $0xFFFFFFFEFFFFFFFF, %rbx\n\t" "and %rbx, %rax\n\t" "movq %rax, %cr0\n\t"); } Well the expected result would be the bit being flipped. The actual result is a segfault. 回答1: TL:DR: This can't work, but your attempt didn't disable paging because you cleared bit 32 instead of bit 31.

问题 i have a recyclerview item ,it contains an another recyclerview to show image list: <android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="wrap_content"> <android.support.v7.widget.RecyclerView android:id="@+id/imageRv" android:layout_width="0dp" android:layout_height="wrap_content" /> if i use paging in ViewHolder,i have to invoke like this class GankViewHolder(parent: View) :