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Date:   Wed, 3 Jun 2020 17:18:57 +0200
From:   Joerg Roedel <joro@8bytes.org>
To:     Brian Gerst <brgerst@gmail.com>
Cc:     the arch/x86 maintainers <x86@kernel.org>,
        "H. Peter Anvin" <hpa@zytor.com>,
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Subject: Re: [PATCH v3 35/75] x86/head/64: Build k/head64.c with
 -fno-stack-protector
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References: <20200428151725.31091-1-joro@8bytes.org>
 <20200428151725.31091-36-joro@8bytes.org>
 <CAMzpN2gfiBAeCV_1+9ogh42bMMuDW=qdwd7dYp49-=zY3kzBaA@mail.gmail.com>
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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