On Wed, Mar 2, 2016 at 4:13 PM, Yinghai Lu <ying...@kernel.org> wrote: > On Wed, Mar 2, 2016 at 2:32 PM, H. Peter Anvin <h...@zytor.com> wrote: >> >> I'm trying to think of any reason why we couldn't simply have a symbol at >> the top of the initial stack? Then a simple leaq would suffice; this is for >> the BSP after all. > > Why do we need to call verify_cpu in arch/x86/kernel/head_64.S aka the > vmlinux again ? > > Is that already called in arch/x86/boot/compressed/head_64.S?
that calling is from startup_32, so may add another calling in startup_64, so can avoid calling from arch/x86/kernel/head_64.S > > Or Tom is using 64bit bootloader that use vmlinux instead of bzImage?
