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loader: framebuffer should only be written into

Description

loader: framebuffer should only be written into

Reading from Write Combining memory can be very-very slow. Try to use
shadow buffer to avoid such reads.

MFC after: 1 month
Differential Revision: https://reviews.freebsd.org/D33305

Details

Provenance
tsoomeAuthored on Dec 6 2021, 5:21 PM
Differential Revision
D33305: loader: framebuffer should only be written into
Parents
rGfaa3605705c6: stress2: Remove tests from the exclude list
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