How does the intel-driver handle vram-readbacks?

Clemens Eisserer linuxhippy at
Thu Feb 8 03:32:34 PST 2007

Hi there,

Just because of interrest: What happens if an operation can't be done
in HW by the intel-i810 driver on a pixmap located in shared memory
Is the CPU able to write directly into this shared or will there be
copy operations between shared-memory (in ram) and userspace (also in

Thank you in advance, lg Clemens

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