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Re: [Qemu-devel] [PATCH v4 7/8] hw/arm: pass pristine kernel image to gu
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From: |
Peter Maydell |
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Subject: |
Re: [Qemu-devel] [PATCH v4 7/8] hw/arm: pass pristine kernel image to guest firmware over fw_cfg |
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Date: |
Tue, 16 Dec 2014 12:18:22 +0000 |
On 16 December 2014 at 12:15, Alexander Graf <address@hidden> wrote:
> I don't understand this. On AArch64 I can simply do -kernel Image and it
> boots without decompressing anything, no?
Yes, but if you pass -kernel Image.gz then it won't work unless the
bootloader (ie QEMU) does the decompression for you. AArch64 differs
from AArch32 here (on 32-bit compressed images have their own builtin
decompressor; on 64-bit this is made the job of the boot loader).
We could choose not to support loading compressed images, but that
would be annoying for users (most other bootloaders do). See
commit 6f5d3cbe88 where we added this support.
-- PMM
- [Qemu-devel] [PATCH v4 1/8] fw_cfg: max access size and region size are the same for MMIO data reg, (continued)
- [Qemu-devel] [PATCH v4 1/8] fw_cfg: max access size and region size are the same for MMIO data reg, Laszlo Ersek, 2014/12/12
- [Qemu-devel] [PATCH v4 3/8] fw_cfg: introduce the "data_memwidth" property, Laszlo Ersek, 2014/12/12
- [Qemu-devel] [PATCH v4 2/8] fw_cfg: generalize overlap check for combining control and data I/O ports, Laszlo Ersek, 2014/12/12
- [Qemu-devel] [PATCH v4 4/8] fw_cfg: expose the "data_memwidth" prop with fw_cfg_init_data_memwidth(), Laszlo Ersek, 2014/12/12
- [Qemu-devel] [PATCH v4 5/8] arm: add fw_cfg to "virt" board, Laszlo Ersek, 2014/12/12
- [Qemu-devel] [PATCH v4 6/8] hw/loader: split out load_image_gzipped_buffer(), Laszlo Ersek, 2014/12/12
- [Qemu-devel] [PATCH v4 7/8] hw/arm: pass pristine kernel image to guest firmware over fw_cfg, Laszlo Ersek, 2014/12/12
[Qemu-devel] [PATCH v4 8/8] hw/arm/virt: enable passing of EFI-stubbed kernel to guest UEFI firmware, Laszlo Ersek, 2014/12/12