-----Original Message----- From: kernelnewbies-bounce@xxxxxxxxxxxx [mailto:kernelnewbies-bounce@xxxxxxxxxxxx]On Behalf Of Jim Bauer Sent: Saturday, June 11, 2005 8:58 AM To: kernelnewbies@xxxxxxxxxxxx Subject: Re: Are there shared copy-on-write pages? >yep. The MMU is told it is read-only, while the (I think) page tables have >it marked read-write. The fault handler seeing this understands it to >be a COW page, makes a read-write copy for the faulting process. If the Page Tables bits are set as read-write then the Page Fault will not happen on a write, right? Is it not that, for COW pages, the Page Tables will have the write permission turned off, but the corresponding VMA will have the 'write' flag turned on ??. Gop -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/ -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
