riscv/qemu: QEMU main repository: Please see https://www.qemu.org/docs/master/devel/submitting-a-patch.html for how to submit changes to QEMU. Pull Requests are ignored. Please only use release tarballs from the QEMU website. http://www.qemu.org - qemu

QEMU main repository: Please see https://www.qemu.org/docs/master/devel/submitting-a-patch.html for how to submit changes to QEMU. Pull Requests are ignored. Please only use release tarballs from the QEMU website. http://www.qemu.org

emulation kvm qemu virtualization

History

Fabiano Rosas 35ed01ba54 optionrom: Remove build-id section Our linker script for optionroms specifies only the placement of the .text section, leaving the linker free to place the remaining sections at arbitrary places in the file. Since at least binutils 2.39, the .note.gnu.build-id section is now being placed at the start of the file, which causes label addresses to be shifted. For linuxboot_dma.bin that means that the PnP header (among others) will not be found when determining the type of ROM at optionrom_setup(): (0x1c is the label _pnph, where the magic "PnP" is) $ xxd /usr/share/qemu/linuxboot_dma.bin \| grep "PnP" 00000010: 0000 0000 0000 0000 0000 1c00 2450 6e50 ............$PnP $ xxd pc-bios/optionrom/linuxboot_dma.bin \| grep "PnP" 00000010: 0000 0000 0000 0000 0000 4c00 2450 6e50 ............$PnP ^bad Using a freshly built linuxboot_dma.bin ROM results in a broken boot: SeaBIOS (version rel-1.16.2-0-gea1b7a073390-prebuilt.qemu.org) Booting from Hard Disk... Boot failed: could not read the boot disk Booting from Floppy... Boot failed: could not read the boot disk No bootable device. We're not using the build-id section, so pass the --build-id=none option to the linker to remove it entirely. Note: In theory, this same issue could happen with any other section. The ideal solution would be to have all unused sections discarded in the linker script. However that would be a larger change, specially for the pvh rom which uses the .bss and COMMON sections so I'm addressing only the immediate issue here. Reported-by: Vasiliy Ulyanov <vulyanov@suse.de> Signed-off-by: Fabiano Rosas <farosas@suse.de> Reviewed-by: Thomas Huth <thuth@redhat.com> Message-ID: <20230926192502.15986-1-farosas@suse.de> Cc: stable@vger.kernel.org Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>		3 years ago
..
Makefile	optionrom: Remove build-id section	3 years ago
flat.lds	optionrom: fix compilation with mingw docker target	10 years ago
kvmvapic.S	kvmvapic: Use optionrom helpers	14 years ago
linuxboot.S	linuxboot: fix loading old kernels	11 years ago
linuxboot_dma.c	linuxboot_dma: move common functions in a new header	7 years ago
multiboot.S	optionrom: add a DMA-enabled multiboot ROM	4 years ago
multiboot_dma.S	optionrom: add a DMA-enabled multiboot ROM	4 years ago
optionrom.h	replace TABs with spaces	3 years ago
optrom.h	linuxboot_dma: move common functions in a new header	7 years ago
optrom_fw_cfg.h	linuxboot_dma: move common functions in a new header	7 years ago
pvh.S	optionrom: add new PVH option rom	7 years ago
pvh_main.c	optionrom/pvh: scan entire RSDP Area	6 years ago