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Yao Zi 1a1ebc90cd hw/loongarch/virt: Don't abort on access to unimplemented IOCSR 
Since commit f2e61edb29 ("hw/loongarch/virt: Use MemTxAttrs interface
for misc ops") which adds a call to g_assert_not_reached() in the path
of handling unimplemented IOCSRs, QEMU would abort when the guest
accesses unimplemented IOCSRs.

This is too serious since there's nothing fatal happening in QEMU
itself, and the guest could probably continue running if we give zero as
result for these reads, which also matches the behavior observed on
3A5000M real machine.

Replace the assertion with qemu_log_mask(LOG_UNIMP, ...), it's still
possible to examine unimplemented IOCSR access through "-d unimp"
command line arguments.

Fixes: f2e61edb29 ("hw/loongarch/virt: Use MemTxAttrs interface for misc ops")
Signed-off-by: Yao Zi <me@ziyao.cc>
Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Bibo Mao <maobibo@loongson.cn>
(cherry picked from commit 49ee001a5b8378e9a9b3db8cbf61e7eda970ecd2)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2026-01-18 19:35:21 +03:00
..
boot.c hw/core/loader: capture Error from load_image_targphys 2025-10-28 08:19:18 +01:00
fw_cfg.c include: Rename sysemu/ -> system/ 2024-12-20 17:44:56 +01:00
fw_cfg.h hw/loongarch: Rename LoongArchMachineState with LoongArchVirtMachineState 2024-05-09 00:07:21 +02:00
Kconfig loongarch: add a direct interrupt controller device 2025-09-28 17:31:04 +08:00
meson.build hw/loongarch/virt: Add separate file for fdt building 2025-02-12 09:52:26 +08:00
virt-acpi-build.c hw/loongarch/virt: Remove header file ls7a.h 2025-10-15 11:05:19 +08:00
virt-fdt-build.c hw/loongarch/virt: Fix irq allocation failure with pci device from fdt 2026-01-18 19:35:21 +03:00
virt.c hw/loongarch/virt: Don't abort on access to unimplemented IOCSR 2026-01-18 19:35:21 +03:00