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Re: [Qemu-devel] [PATCH] vga: set owner for mmio regions
From: |
Thomas Huth |
Subject: |
Re: [Qemu-devel] [PATCH] vga: set owner for mmio regions |
Date: |
Tue, 26 Jun 2018 09:20:12 +0200 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.8.0 |
On 26.06.2018 08:09, Gerd Hoffmann wrote:
> This makes sure the regions are properly cleaned when unplugging -device
> seconday-vga.
>
> Reported-by: Thomas Huth <address@hidden>
> Signed-off-by: Gerd Hoffmann <address@hidden>
> ---
> hw/display/vga_int.h | 1 +
> hw/display/vga-pci.c | 11 ++++++-----
> hw/display/virtio-vga.c | 2 +-
> 3 files changed, 8 insertions(+), 6 deletions(-)
Thanks, this fixes the issue indeed! Without this patch:
$ valgrind mips-softmmu/qemu-system-mips -accel qtest -monitor stdio
[...]
(qemu) device_add secondary-vga
Unsupported bus. Bus doesn't have property 'acpi-pcihp-bsel' set
(qemu) dump-guest-memory /dev/null 0 4096
==8407== Invalid read of size 8
==8407== at 0x6B0DA5: object_dynamic_cast (object.c:613)
==8407== by 0x6B0DA5: object_resolve_abs_path (object.c:1721)
==8407== by 0x6B0E00: object_resolve_partial_path (object.c:1745)
==8407== by 0x6B0E62: object_resolve_partial_path (object.c:1755)
[...]
With this patch applied, the problem is gone.
Tested-by: Thomas Huth <address@hidden>
Reviewed-by: Thomas Huth <address@hidden>