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Subject: Re: [PATCH 23/62] x86/idt: Move IDT to data segment
To:     Joerg Roedel <joro@8bytes.org>
Cc:     Andy Lutomirski <luto@amacapital.net>,
        Andy Lutomirski <luto@kernel.org>, X86 ML <x86@kernel.org>,
        "H. Peter Anvin" <hpa@zytor.com>,
        Dave Hansen <dave.hansen@linux.intel.com>,
        Peter Zijlstra <peterz@infradead.org>,
        Thomas Hellstrom <thellstrom@vmware.com>,
        Jiri Slaby <jslaby@suse.cz>,
        Dan Williams <dan.j.williams@intel.com>,
        Tom Lendacky <Thomas.Lendacky@amd.com>,
        Kees Cook <keescook@chromium.org>,
        LKML <linux-kernel@vger.kernel.org>,
        kvm list <kvm@vger.kernel.org>,
        Linux Virtualization <virtualization@lists.linux-foundation.org>,
        Joerg Roedel <jroedel@suse.de>
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Date:   Wed, 19 Feb 2020 11:47:33 +0100
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On 19.02.20 11:42, Joerg Roedel wrote:
> Hi Jürgen,
> 
> On Wed, Feb 12, 2020 at 05:28:21PM +0100, Jürgen Groß wrote:
>> Xen-PV is clearing BSS as the very first action.
> 
> In the kernel image? Or in the ELF loader before jumping to the kernel
> image?

In the kernel image.

See arch/x86/xen/xen-head.S - startup_xen is the entry point of the
kernel.


Juergen