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charset=UTF-8 Content-Transfer-Encoding: 7bit X-Proofpoint-ORIG-GUID: Cq3kr45zlMOHSSpC9HHccv4jOMMhp-ZQ X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwOTMwMDA0MSBTYWx0ZWRfX+qbYEIzP1Da6 wTsLa1nmrN5/hNWhfKQkqP7dB5sINswjyDYXuYpZXOK5fklZjvuJ8sfMHDLquU6R8+ENf7ZHBLI cgGAaTwpqiAZ4PmfujuEAN6IdjlX+dfmZNfEcRpz3kfb1BRf+rEhF810ZRVu/ZLoLdThuCbf+E5 R3ODYkdQegkWJEfvzUA4sI6OjnyAmo7cTy2e3BX1CrgpG+6GT/2T8w80UsYhvyH4MCTF3wrECy2 hm6tT7Mxyn6+jziX0MkiPMMzEUsA8KKxxE4b67EGt8sbiYWqwmj6tO0qPs5l/rB4r2hG1/RdKOt e1gSZWqNExKvoJlenyUZtaUFbEfgRL2qKFi3hOX4ddpNOWwx28GLhb28hRpNZckXRhb4wnEYidc XUt0f6NlXhxI5idewTT1mv77VEs8gkQyTYMrkDGJRdfhj9MVqP17+jDILRE2Qp2AWYWorHg1A5t qgn39J/ENkCULUIkTNA== X-Proofpoint-Spam-Info: AW1haW4tMjYwOTMwMDA0MSBTYWx0ZWRfXw3t0seBrCzo+ YAdoAKKpeRq0//WE3Xbr/hN10b54RC8zeI6lhTnttiFKikyIkkq/dQjnzyWY06ciCloTHFbJtA9 EdwVcLr8f47UTMJZodQotTE1Z35yzzk= X-Proofpoint-GUID: Cq3kr45zlMOHSSpC9HHccv4jOMMhp-ZQ X-Authority-Analysis: v=2.4 cv=fqxJ914f c=1 sm=1 tr=0 ts=6abce574 cx=c_pps a=HLyN3IcIa5EE8TELMZ618Q==:117 a=PRfkaYvzSr8QmIIGAkY2Sg==:17 a=IkcTkHD0fZMA:10 a=VdqzKS8jKosA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=_glEPmIy2e8OvE2BGh3C:22 a=EUspDBNiAAAA:8 a=4BULcDCo1EIeXDFKsSoA:9 a=QEXdDO2ut3YA:10 a=bTQJ7kPSJx9SKPbeHEYW:22 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-09-30_01,2026-09-21_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 adultscore=0 clxscore=1015 impostorscore=0 malwarescore=0 suspectscore=0 spamscore=0 bulkscore=0 priorityscore=1501 lowpriorityscore=0 phishscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2609040000 definitions=main-2609300041 On 9/26/26 8:34 AM, Vikash Garodia wrote: > The VPU issues DMA through several SMMU streams, and the hardware does > not give every stream the same addressable range. The non-pixel stream > cannot address the low 600MB of IOVA space, while the pixel stream can > address the full range: > +-----------------------------------------------------------+ > | non-pixel stream addressable range (600 MB - 3.5 GB) | > | 0x25800000 - 0xe0000000 | > +-----------------------------------------------------------+ > | pixel stream addressable range (0 - 3.5 GB) | > | 0x00000000 - 0xe0000000 | > +-----------------------------------------------------------+ Reviewed-by: Konrad Dybcio Konrad