Just submitted this patchset to the list which should fix this bug:
https://patchwork.ozlabs.org/project/qemu-devel/list/?series=60775
** Changed in: qemu
Status: New => In Progress
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Mmm. I guess the wiki page is just wrong, then. I have some prototype patches
that work, but I need to check somehow what the real hardware's response to
various edge cases is:
* trying to set a virtual screen size that's smaller than the physical screen
size
* trying to set the virtual x/y of
The virtual size must be at least the size of the physical display. One
approach toward double-buffering is to make the virtual height twice the
physical height. To "flip" the displays you simply change the start of
the visible view port.
See these:
https://lb.raspberrypi.org/forums/viewtopic.p
Thanks for the test case. I'm having difficulty matching up your guest
code with the documentation of the fb mbox tags in
https://github.com/raspberrypi/firmware/wiki/Mailbox-property-interface
...
Your code sets the physical height to FBHEIGHT via tag 0x48003, and the
virtual height to FBHEIGHT *
Whoops.. Forgot to include the QEMU command line:
qemu-system-aarch64 -M raspi3 --kernel kernel8.img -serial stdio
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https://bugs.launchpad.net/bugs/1777672
Title:
QEMU aarch64 virtual
Certainly! Attached.
If you start the attached on a piece of hardware, it will start and display
fine.. If you start it in QEMU, it will start but display a double-height
screen rather than limiting the physical screen to the specified dimensions.
(The virtual display is double-height in prep
Can you provide a test binary and QEMU command line that reproduce this,
please ?
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https://bugs.launchpad.net/bugs/1777672
Title:
QEMU aarch64 virtual/physical frame buffer
Status in
** Tags added: arm
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https://bugs.launchpad.net/bugs/1777672
Title:
QEMU aarch64 virtual/physical frame buffer
Status in QEMU:
New
Bug description:
I fully recognize that the erro
