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a=openpgp; fpr=324030E8C005175DF93707A40E267E4CEE53433D Just a quick check to make sure user-supplied vm_bind regions aren't clashing with the region reserved for kernel bo's. I tried to introduce a similar check for panthor_vm_alloc_va(), to throw back an error when mappings of kernel bo's against specific addresses fall within the auto_va region. However that is not possible, since there's one FW region that must be mapped right at CSF_MCU_SHARED_REGION_START. That is usually not a problem, since drm_mm_insert_node_in_range() will pick the next one available. v3 also comes with an early bind range overflow check for sparse mappings. Signed-off-by: Adrián Larumbe --- Changes in v5: - Coalesced uint64 and kbo ranges overflow checks into a single patch. - Link to v4: https://patch.msgid.link/20260704-vm_bind_checks-v4-0-4705b6ca9f8a@collabora.com Changes in v4: - Deleted commit that passes single operation to panthor_vm_prepare_unmap_op_ctx. - Moved overflow check one step above in the call stack. - Rearranged the commits in the series. - Link to v3: https://patch.msgid.link/20260629-vm_bind_checks-v3-0-85e6740f6c2e@collabora.com Changes in v3: - Fixed off-by-one error for user va range calculations. - Added new commit for panthor_vm_prepare_unmap_op_ctx to take a whole operation. - Added commit with bind range early overflow check. - Link to v2: https://patch.msgid.link/20260619-vm_bind_checks-v2-0-b51abab35f71@collabora.com Changes in v2: - Simplified user VA range with kernel BO range overlap to a single statement. - Link to v1: https://patch.msgid.link/20260616-vm_bind_checks-v1-0-956198602ae3@collabora.com To: Boris Brezillon To: Steven Price To: Liviu Dudau To: Maarten Lankhorst To: Maxime Ripard To: Thomas Zimmermann To: David Airlie To: Simona Vetter To: Heiko Stuebner To: Grant Likely To: Adrián Larumbe Cc: dri-devel@lists.freedesktop.org Cc: linux-kernel@vger.kernel.org --- Adrián Larumbe (2): drm/panthor: Add vm_bind region with kbo range overlap check drm/panthor: Fix comment to reflect actual struct field name drivers/gpu/drm/panthor/panthor_mmu.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) --- base-commit: 8fca3d8dbebf8d960dad7b10db3cb4a61139454b change-id: 20260614-vm_bind_checks-46075ba069a0 Best regards, -- Adrián Larumbe