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RECEIVED_SPAMHAUS_BLOCKED_OPENRESOLVER(0.00)[2a07:de40:b281:106:10:150:64:167:received]; DKIM_TRACE(0.00)[suse.de:+]; DBL_BLOCKED_OPENRESOLVER(0.00)[imap1.dmz-prg2.suse.org:helo,imap1.dmz-prg2.suse.org:rdns,suse.com:url,suse.de:dkim,suse.de:mid] X-Rspamd-Action: no action X-Spam-Flag: NO X-Spam-Score: -4.51 X-Spam-Level: X-Rspamd-Server: rspamd1.dmz-prg2.suse.org X-Rspamd-Queue-Id: 68CCC5BD44 Hi Am 22.04.26 um 02:14 schrieb Dmitry Baryshkov: > On Tue, Apr 21, 2026 at 07:08:31PM +0300, Dmitry Baryshkov wrote: >> On Tue, Apr 21, 2026 at 02:51:13PM +0200, Thomas Zimmermann wrote: >>> A client buffer holds the DRM framebuffer for an in-kernel DRM >>> client. Until now, msm created an internal ad-hoc framebuffer for >>> its fbdev emulation, while by-passing the regular interfaces used by >>> user-space compositors. >> I assume this was somewhat because we supported using the stolen memory >> for FB. Support for it has been dropped when we moved to GPUVM. >> >> Rob, would it be possible to get it back at some point? >> >> Thomas, would the series prevent us from using the stolen memory for FB? > And answering my question, no, we still can continue using stolen memory > for the FB. Indeed. The idea here is to keep the GEM buffer allocation as it is; including stolen memory.   Once all driver's fbdev emulation uses the client-buffer interfaces, we might be able to create the framebuffer in the shared fbdev helpers. As I mentioned in my reply to patch 4, the GEM buffer object is something like fbdev framebuffer memory (i.e., video ram). In a later change, we could allocate all of the stolen memory unconditionally. Best regards Thomas > -- -- Thomas Zimmermann Graphics Driver Developer SUSE Software Solutions Germany GmbH Frankenstr. 146, 90461 Nürnberg, Germany, www.suse.com GF: Jochen Jaser, Andrew McDonald, Werner Knoblich, (HRB 36809, AG Nürnberg)