Re: Copy-on-Write

On Feb 6, 2008 11:19 AM, Rick Brown [EMAIL PROTECTED] wrote: Hi, I had read that the operating systems that use copy-on-write mechanism for fork(), it is better if they deliberately allow the CHILD to run first. This would be better because in 99% of the cases child will call exec() and

Re: Copy-on-Write

On Feb 6, 2008 6:03 PM, Rajat Jain [EMAIL PROTECTED] wrote: Hi, I had read that the operating systems that use copy-on-write mechanism for fork(), it is better if they deliberately allow the CHILD to run first. This would be better because in 99% of the cases child will call

RE: Copy-on-Write

Hi, I had read that the operating systems that use copy-on-write mechanism for fork(), it is better if they deliberately allow the CHILD to run first. This would be better because in 99% of the cases child will call exec() and the new address space will be allocated. Instead if the

Re: TLB Question

I found one header file for x86 that implement the TLB flushing - include/asm-x86/tlbflush.h (the different implementation are used are used because of the diff generation of x86: static inline void __native_flush_tlb(void) { write_cr3(read_cr3()); } (my questions: WHAT IS THE DIFF

Re: TLB Question

On Feb 6, 2008 7:54 PM, Peter Teoh [EMAIL PROTECTED] wrote: I found one header file for x86 that implement the TLB flushing - include/asm-x86/tlbflush.h (the different implementation are used are used because of the diff generation of x86: static inline void __native_flush_tlb(void) {

What is page_alloc.c's bad_page() function?

I was reading http://linux-mm.org/PageAllocation, and came across this arch-indep mm/page_alloc.c, there is a static function bad_page(): static void bad_page(struct page *page) { printk(KERN_EMERG Bad page state in process '%s'\n KERN_EMERG page:%p flags:0x%0*lx

Re: How to get a physical address from a linear one using a different pgd

On Feb 5, 2008 11:42 PM, Mulyadi Santosa [EMAIL PROTECTED] wrote: Hi... On 2/6/08, Martin Candurra [EMAIL PROTECTED] wrote: I had to get some data from a user process within a kernel module. That process wasn't the current so the process pgd was not the same as the current pgd (for this

Copy-on-Write

Hi, I had read that the operating systems that use copy-on-write mechanism for fork(), it is better if they deliberately allow the CHILD to run first. This would be better because in 99% of the cases child will call exec() and the new address space will be allocated. Instead if the parent is

Re: losetup query

That's userspace tool. # rpm -qf `whereis losetup` util-linux-2.12a-16 regards, Mulyadi. Well thanks for the reply. I actually wanted to know how does the /sbin/losetup command function, which is what i am unable to find. I found the losetup.c in util-linux, but it does not give me the

RE: What is page_alloc.c's bad_page() function?

Hi, static void bad_page(struct page *page) { printk(KERN_EMERG Bad page state in process '%s'\n KERN_EMERG page:%p flags:0x%0*lx mapping:%p mapcount:%d count:%d\n KERN_EMERG Trying to fix it up, but a reboot is needed\n KERN_EMERG