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Date:   Sat, 31 Dec 2022 14:51:28 +0100
From:   "Jason A. Donenfeld" <Jason@zx2c4.com>
To:     Borislav Petkov <bp@alien8.de>
Cc:     "H. Peter Anvin" <hpa@zytor.com>, pbonzini@redhat.com,
        ebiggers@kernel.org, x86@kernel.org, linux-kernel@vger.kernel.org,
        qemu-devel@nongnu.org, ardb@kernel.org, kraxel@redhat.com,
        philmd@linaro.org
Subject: Re: [PATCH qemu] x86: don't let decompressed kernel image clobber
 setup_data
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On Sat, Dec 31, 2022 at 02:48:12PM +0100, Borislav Petkov wrote:
> On Sat, Dec 31, 2022 at 02:44:08PM +0100, Jason A. Donenfeld wrote:
> > Are you using patch v1 minus the 62 MiB thing?
> 
> No, I want to see the original failure - the one that prompted you to send
> 
> https://lore.kernel.org/r/20221228143831.396245-1-Jason@zx2c4.com

That failure is unrelated to the ident mapping issue Peter and
I discussed. The original failure is described in the commit message:
decompression clobbers the data, so sd->next points to garbage.