linux-kernel - Re: [PATCH] x86/boot/64: Initialize 5-level paging variables earlier

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Message-ID: <20201015135209.cojpqumlqntird2o@black.fi.intel.com>
Date:   Thu, 15 Oct 2020 16:52:09 +0300
From:   "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>
To:     Borislav Petkov <bp@...en8.de>
Cc:     Arvind Sankar <nivedita@...m.mit.edu>, x86@...nel.org,
        Joerg Roedel <jroedel@...e.de>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] x86/boot/64: Initialize 5-level paging variables earlier

On Tue, Oct 13, 2020 at 10:33:58AM +0200, Borislav Petkov wrote:
> On Tue, Oct 13, 2020 at 11:20:47AM +0300, Kirill A. Shutemov wrote:
> > With TCG or KVM? I use -machine "type=q35,accel=tcg".
> 
> Thx, that triggered it - it was KVM before.
> 
> Btw, are 5level boxes shipping already or not yet? Because I've not seen
> one yet. If you have access to the hw, I'd appreciate it if you could
> test Arvind's patch ontop of
> 
> https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/log/?h=x86/seves
> 
> which does that early pagetable rework.

Yes, the patch helps to fix 5-level paging boot:

Tested-by: Kirill A. Shutemov <kirill.shutemov@...ux.intel.com>

-- 
 Kirill A. Shutemov