Re: [RFC PATCH] x86: Make sure verify_cpu has a good stack

From: Yinghai Lu
Date: Wed Mar 02 2016 - 19:13:08 EST


On Wed, Mar 2, 2016 at 2:32 PM, H. Peter Anvin <hpa@xxxxxxxxx> 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?

Or Tom is using 64bit bootloader that use vmlinux instead of bzImage?

Thanks

Yinghai