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From:   Ard Biesheuvel <ardb@kernel.org>
Date:   Sat, 27 May 2023 20:03:53 +0200
Message-ID: <CAMj1kXGjkKK-oHm64Y9P-AbYQWd9jnEdsNucRbY_-7mgJ_4yAA@mail.gmail.com>
Subject: Re: mix of ACPICA regression and EFISTUB regression (Was: kernel >=
 v6.2 no longer boots on Apple's Virtualization.framework (x86_64); likely to
 be related to ACPICA)
To:     Akihiro Suda <suda.kyoto@gmail.com>
Cc:     Bagas Sanjaya <bagasdotme@gmail.com>, linux-efi@vger.kernel.org,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        Linux Regressions <regressions@lists.linux.dev>,
        Linux x86 <x86@kernel.org>,
        Linux ACPI <linux-acpi@vger.kernel.org>,
        Linux ACPICA <acpica-devel@lists.linuxfoundation.org>,
        Linux Stable <stable@vger.kernel.org>,
        "Rafael J. Wysocki" <rafael@kernel.org>,
        Jianmin Lv <lvjianmin@loongson.cn>,
        Huacai Chen <chenhuacai@loongson.cn>,
        Linus Torvalds <torvalds@linux-foundation.org>,
        Robert Moore <robert.moore@intel.com>
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On Sat, 27 May 2023 at 20:00, Akihiro Suda <suda.kyoto@gmail.com> wrote:
>
> [Resending as a plain text email]
>
> Turned out that this is a mixture of an ACPICA issue and an EFISTUB issue.
>
> Kernel v6.2 can boot by reverting the *both* of the following two commits:
> - 5c62d5aab8752e5ee7bfbe75ed6060db1c787f98 "ACPICA: Events: Support
> fixed PCIe wake event"
> - e346bebbd36b1576a3335331fed61bb48c6d8823 "efi: libstub: Always
> enable initrd command line loader and bump version"
>
> Kernel v6.3 can boot by just reverting e346bebb, as 5c62d5a has been
> already reverted in 8e41e0a575664d26bb87e012c39435c4c3914ed9.
> The situation is the same for v6.4-rc3 too.
>
> Note that in my test I let Virtualization.framework directly load
> bzImage without GRUB (akin to `qemu-system-x86_64 -kernel bzImage`).
> Apparently, reverting e346bebb is not necessary for loading bzImage via GRUB.
>

Are you using OVMF? Which versions of qemu and OVMF are you using?