On Sun, Apr 6, 2008 at 10:25 AM, H. Peter Anvin <hpa@xxxxxxxxx> wrote: > > Yinghai Lu wrote: > > > On Sun, Apr 6, 2008 at 9:38 AM, H. Peter Anvin <hpa@xxxxxxxxx> wrote: > > > > > Yinghai Lu wrote: > > > > > > > > > > so will cost every bzImage extra memory copy? that could be 18M or > > > > even more big. > > > > > > > > > > > I wouldn't worry about that. You will typically have several copies of > the > > > images during the execution of the boot loader. > > > > > > > i put all drivers needed in kernel. > > 1. bootloader copy bzImage (6M) to memory > > 2. arch/x86/boot/compressed/head_32.S, will copy bzImage to end of > > buffer to do uncompress on possiton. > > 3. parse_elf will copy the vmlinux (the uncompressed, that is some big, > 18M) > > > > I suggest that could have special elf header, and will only have one > > PT_LOAD, and avoid the copy, and just offset start address of > > uncompressed kernel for jump later. > > > > Once again, I think you will have a hard time measuring the time > difference. ok. forget about my proposal.. YH _______________________________________________ Virtualization mailing list Virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/virtualization
