[PATCH v4 04/16] drm/i915: Bypass LMEMBAR/GTTMMADR for MTL stolen memory access

2024-02-02 Thread Ville Syrjala
From: Ville Syrjälä On MTL accessing stolen memory via the BARs is somehow borked, and it can hang the machine. As a workaround let's bypass the BARs and just go straight to DSMBASE/GSMBASE instead. Note that on every other platform this itself would hang the machine, but on MTL the system firmw

Re: [PATCH v4 04/16] drm/i915: Bypass LMEMBAR/GTTMMADR for MTL stolen memory access

2024-01-30 Thread Paz Zcharya
On Thu, Jan 25, 2024 at 12:27:14PM +0200, Ville Syrjala wrote: > From: Ville Syrjälä > > On MTL accessing stolen memory via the BARs is somehow borked, > and it can hang the machine. As a workaround let's bypass the > BARs and just go straight to DSMBASE/GSMBASE instead. > > Note that on every o

[PATCH v4 04/16] drm/i915: Bypass LMEMBAR/GTTMMADR for MTL stolen memory access

2024-01-25 Thread Ville Syrjala
From: Ville Syrjälä On MTL accessing stolen memory via the BARs is somehow borked, and it can hang the machine. As a workaround let's bypass the BARs and just go straight to DSMBASE/GSMBASE instead. Note that on every other platform this itself would hang the machine, but on MTL the system firmw