Virtual memory is a good concept currently used by modern operating systems. But I was stuck answering a question and was not sure enough about it. Here is the question:
This question is NOT about retain/release things in iphone memory management. I understand the routine quite well and there is no memory leak things in my app.
How can I reserve and allocate shared memory without the backing of a file? I\'m trying to reserve a large (many tens of GiBs) chunk of shared memory and use it in multiple processes as a form of IPC.
When I run a job on a node, using PBS, and I get finally in the job report: resources_used.mem开发者_开发问答=1616024kb
I was trying to understand 开发者_如何学运维following: I know that page tables are built for translation between virtual memory and physical memory by virtual memory manager at some point. Since the
In the following code (the read implementation for a char driver), is it possible for MMU TLB entries to change during wait_event_interruptible, such that __put_user causes an exception even though ac
I do not quite understand the benefit of \"multiple independent virtual address, which point to the same physical address\", even though I read many books and posts,
What exactly does the virt_to_page function return, does it return the page given an address in the kernel space or does it return a page given an address in user space? As far as I can tell it seems
I\'m studying z/OS and I was asked if the virtual address 0x1FE0C0 is: A. above the line. B. above the bar and below the line.
Being used only by the kernel, they should only lie in the addresses above PAGE_OFFSET. But I was reading this page and at the end of it (in the IRC convo) I read the following lines which really conf
加载中,请稍侯......