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charset=UTF-8 Content-Transfer-Encoding: 7bit X-Proofpoint-GUID: JzwMJ1RGOzPAZCnmCu6SiyvQyjCIvSZe X-Proofpoint-ORIG-GUID: JzwMJ1RGOzPAZCnmCu6SiyvQyjCIvSZe X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwOTMwMDA0MSBTYWx0ZWRfXxGYlkF1GHTtM ZmVI0BWqe0FK9lJSt0yyF4t0vOd3DXNafH/LcRqvgHfnXM9wPDxKnFBmx43UaEz6kh7xMWEFl5B xkfrEpfJc65a0icSK4iLtN16sxFFK/lQTStPXLCFOHRGr4Acj95BFrgsf3w5iWDOZYEYDUptybZ n0veXFtuYZfwnpd9dsa53RaWFkKpLgfJn6zr6TeXrp0XqWgFqFcCB0SEcyt9cFNYBL8HSfGmOKc AMh257IroogcADvU2J0cpMp4CAIWrVqI3wxuT4h9bwLmSKhp3SU7dWd1dkdOgMu4XaUGBw33m+l 1ztd38YzaRgMqjs51n65luOAojMDNXnL75cfUon2wW0yUpZhOjY17d4Xafl2bZ2MXIQvfYhJKF/ qZHP5KAwlCskOIZVBkIzF7Fs1H5pc04d7pBHtR9s7C25HoK/D0LNCNHIVybHHBnLdNKouejThJe LruotEkWjxs+CC8VhjA== X-Proofpoint-Spam-Info: AW1haW4tMjYwOTMwMDA0MSBTYWx0ZWRfX82fGr1R8x0R6 5SFhnytUvFLjzbnUvRpx6flQxCuVdJUcORp+YSrvsLDGZQ1D4BGJUZuYyDk6DqngOfoZ9m09ret vyW5LN2WHiEyL4DycLsP37iSh3iVkUE= X-Authority-Analysis: v=2.4 cv=Tu1zFzXh c=1 sm=1 tr=0 ts=6abce564 cx=c_pps a=oc9J++0uMp73DTRD5QyR2A==:117 a=PRfkaYvzSr8QmIIGAkY2Sg==:17 a=IkcTkHD0fZMA:10 a=VdqzKS8jKosA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=yx91gb_oNiZeI1HMLzn7:22 a=EUspDBNiAAAA:8 a=4BULcDCo1EIeXDFKsSoA:9 a=QEXdDO2ut3YA:10 a=iYH6xdkBrDN1Jqds4HTS: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 impostorscore=0 spamscore=0 malwarescore=0 suspectscore=0 phishscore=0 lowpriorityscore=0 adultscore=0 clxscore=1015 bulkscore=0 priorityscore=1501 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