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Reply-To: sedat.dilek@gmail.com
From:   Sedat Dilek <sedat.dilek@gmail.com>
Date:   Tue, 14 Jul 2020 22:17:33 +0200
Message-ID: <CA+icZUV45bAExLaUAPkiJEC-kOYw2vMWUrDpy_9XNPeK7WB4qQ@mail.gmail.com>
Subject: Re: [PATCH v4 0/7] x86/boot: Remove runtime relocations from
 compressed kernel
To:     Arvind Sankar <nivedita@alum.mit.edu>
Cc:     Thomas Gleixner <tglx@linutronix.de>,
        Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
        "H. Peter Anvin" <hpa@zytor.com>, x86@kernel.org,
        Nick Desaulniers <ndesaulniers@google.com>,
        Fangrui Song <maskray@google.com>,
        Dmitry Golovin <dima@golovin.in>,
        Clang-Built-Linux ML <clang-built-linux@googlegroups.com>,
        Ard Biesheuvel <ardb@kernel.org>,
        Masahiro Yamada <masahiroy@kernel.org>,
        Daniel Kiper <daniel.kiper@oracle.com>,
        Kees Cook <keescook@chromium.org>,
        Nathan Chancellor <natechancellor@gmail.com>,
        Arnd Bergmann <arnd@arndb.de>,
        "H . J . Lu" <hjl@sourceware.org>, linux-kernel@vger.kernel.org
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Sender: linux-kernel-owner@vger.kernel.org
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--0000000000001a88c905aa6c808f
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On Tue, Jul 14, 2020 at 10:14 PM Arvind Sankar <nivedita@alum.mit.edu> wrote:
>
> On Tue, Jul 14, 2020 at 10:10:14PM +0200, Sedat Dilek wrote:
> > On Tue, Jul 14, 2020 at 10:07 PM Arvind Sankar <nivedita@alum.mit.edu> wrote:
> > >
> > > On Tue, Jul 14, 2020 at 09:53:19PM +0200, Sedat Dilek wrote:
> > > >
> > > > Hmm, you might be right with moving to LDFLAGS_vmlinux.
> > > >
> > > > Attached are my linux-config and dmesg-output.
> > > >
> > > > - Sedat -
> > >
> > > Which tree are you building against? I notice you have KERNEL_ZSTD
> > > enabled, which hasn't been merged yet.
> > >
> > > Are you using Nick's series [v7]?
> > >
> > > Also from the naming -- are you using LLVM_IAS=1 with some patches to
> > > make it work?
> > >
> > > [v7] https://lore.kernel.org/lkml/20200708185024.2767937-1-nickrterrell@gmail.com/
> >
> > Sorry for not telling you the full story.
> > Yes, I have some additional patches like Nick T. "zstd-v7" which
> > should IMHO not touch this area.
> >
> > - Sedat -
>
> That series does touch boot/compressed, since the point is to add
> support for zstd-compressed kernels. I'll need to test it out, the
> __DISABLE_EXPORTS he's now using must not be working for some reason.

I have seen this in the between zstd-v6 and zstd-v7 - diff attached.

- Sedat -

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