https://sourceware.org/bugzilla/show_bug.cgi?id=20995
--- Comment #15 from Jiong Wang <jiwang at gcc dot gnu.org> --- (In reply to Alan Modra from comment #14) > If you define COMMONPAGESIZE, yes, you may waste up to COMMONPAGESIZE extra > on disk in order to *save* memory pages. > > To see this, imagine a system where memory pages are 16k and disk pages are > 4k. Consider a binary with 15k of text and 5k of data. The classic layout > puts data adjacent to text on disk, thus taking 20k of disk. In memory text > occupies one page covering base address b to b+15k, while data starts at > b+15k+16k. This means data takes two 16k memory pages. If we add a gap of > 1k between text and data, then data only takes one 16k memory page but we > now have 21k on disk, or one extra disk page. Thanks for the explanation. I kind of understanding this as caused by remapping of the page which cross text and data twice for different permission. -- You are receiving this mail because: You are on the CC list for the bug. _______________________________________________ bug-binutils mailing list bug-binutils@gnu.org https://lists.gnu.org/mailman/listinfo/bug-binutils
