Hi,

On Thu, Feb 08, 2024 at 07:12:40PM +0100, Philippe Mathieu-Daudé wrote:
> We should not wire IRQs on unrealized device.
> 
> Signed-off-by: Philippe Mathieu-Daudé <phi...@linaro.org>
> Reviewed-by: Peter Maydell <peter.mayd...@linaro.org>
> Reviewed-by: Yoshinori Sato <ys...@users.sourceforge.jp>

qemu 9.0 fails to boot Linux from ide/ata drives with the sh4
and sh4eb emulations. Error log is as follows.

ata1.00: ATA-7: QEMU HARDDISK, 2.5+, max UDMA/100
ata1.00: 16384 sectors, multi 16: LBA48
ata1.00: configured for PIO
scsi 0:0:0:0: Direct-Access     ATA      QEMU HARDDISK    2.5+ PQ: 0 ANSI: 5
sd 0:0:0:0: [sda] 16384 512-byte logical blocks: (8.39 MB/8.00 MiB)
sd 0:0:0:0: [sda] Write Protect is off
sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support 
DPO or FUA
ata1: lost interrupt (Status 0x58)

[ and more similar errors ]

qemu command line:

qemu-system-sh4eb -M r2d -kernel arch/sh/boot/zImage \
        -snapshot -drive file=rootfs.ext2,format=raw,if=ide \
        -append "root=/dev/sda console=ttySC1,115200 noiotrap" \
        -serial null -serial stdio -monitor null -nographic -no-reboot

Bisect points to this patch (see below). Reverting it fixes the problem.

Guenter

---
bisect log:

# bad: [c25df57ae8f9fe1c72eee2dab37d76d904ac382e] Update version for 9.0.0 
release
# good: [1600b9f46b1bd08b00fe86c46ef6dbb48cbe10d6] Update version for v8.2.0 
release
git bisect start 'v9.0.0' 'v8.2.0'
# good: [62357c047a5abc6ede992159ed7c0aaaeb50617a] Merge tag 
'qemu-sparc-20240213' of https://github.com/mcayland/qemu into staging
git bisect good 62357c047a5abc6ede992159ed7c0aaaeb50617a
# bad: [d65f1ed7de1559534d0a1fabca5bdd81c594c7ca] docs/acpi/bits: add some 
clarity and details while also improving formating
git bisect bad d65f1ed7de1559534d0a1fabca5bdd81c594c7ca
# bad: [99e1c1137b6f339be1e4b76e243ad7b7c3d3cb8c] hw/i386/pc: Populate RTC 
attribute directly
git bisect bad 99e1c1137b6f339be1e4b76e243ad7b7c3d3cb8c
# bad: [760b4dcdddba4a40b9fa0eb78fdfc7eda7cb83d0] Merge tag 'for-upstream' of 
https://gitlab.com/bonzini/qemu into staging
git bisect bad 760b4dcdddba4a40b9fa0eb78fdfc7eda7cb83d0
# good: [f2b4a98930c122648e9dc494e49cea5dffbcc2be] target/arm: Allow access to 
SPSR_hyp from hyp mode
git bisect good f2b4a98930c122648e9dc494e49cea5dffbcc2be
# bad: [1a8e2f58c5dd721086284f827326b370d19ad9eb] hw/i386/q35: Use DEVICE() 
cast macro with PCIDevice object
git bisect bad 1a8e2f58c5dd721086284f827326b370d19ad9eb
# good: [59ae6bcddc3651b55b96c2bf05a6cd4312e46d10] hw/ppc/prep: Realize ISA 
bridge before accessing it
git bisect good 59ae6bcddc3651b55b96c2bf05a6cd4312e46d10
# bad: [7ed9a5f626a6c932a8c869a91e6a8b3e2029f5ef] hw/intc/grlib_irqmp: 
implements the multiprocessor status register
git bisect bad 7ed9a5f626a6c932a8c869a91e6a8b3e2029f5ef
# bad: [d08b7af3f7f27f6f3da8446756bf0b9352026b1d] target/sparc: Provide hint 
about CPUSPARCState::irq_manager member
git bisect bad d08b7af3f7f27f6f3da8446756bf0b9352026b1d
# bad: [5e37bc4997c32a1c9a6621a060462c84df9f1b8f] hw/dma: Pass parent object to 
i8257_dma_init()
git bisect bad 5e37bc4997c32a1c9a6621a060462c84df9f1b8f
# bad: [3c5f86a22686ef475a8259c0d8ee714f61c770c9] hw/sh4/r2d: Realize IDE 
controller before accessing it
git bisect bad 3c5f86a22686ef475a8259c0d8ee714f61c770c9
# good: [fc432ba0f58343c8912b80e9056315bb9bd8df92] hw/misc/macio: Realize IDE 
controller before accessing it
git bisect good fc432ba0f58343c8912b80e9056315bb9bd8df92
# first bad commit: [3c5f86a22686ef475a8259c0d8ee714f61c770c9] hw/sh4/r2d: 
Realize IDE controller before accessing it

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