Re: [PATCH v3 35/75] x86/head/64: Build k/head64.c with -fno-stack-protector

Joerg Roedel
2020-06-03T15:18:57Z

On Tue, May 19, 2020 at 09:58:18AM -0400, Brian Gerst wrote:
> On Tue, Apr 28, 2020 at 11:28 AM Joerg Roedel <joro@8bytes.org> wrote:

> The proper fix would be to initialize MSR_GS_BASE earlier.

That'll mean to initialize it two times during boot, as the first C
function with stack-protection is called before the kernel switches to
its high addresses (early_idt_setup call-path). But okay, I can do that.

On the other side, which value does the stack protector have in the early
boot code?

Joerg