On 2020-04-20 5:42 pm, Sai Prakash Ranjan wrote:
From: Sibi Sankar <sibis@xxxxxxxxxxxxxx>
Request direct mapping for modem on platforms which don't have TrustZone
(which programs the modem SIDs) to prevent the following global faults seen
on Cheza/Trogdor:
Not strictly true - it's patch #6/6 that prevents *those* faults (and
these days the driver should be reporting unmatched streams a little
more helpfully). This change would resolve the context faults and/or
weird memory corruption that might result from applying patch #6 alone
- this is the crazy thing where transactions sometimes go directly to
DRAM round the side of the SMMU so we can never safely remap anything,
right?