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charset="utf-8" Content-Transfer-Encoding: 8bit X-B4-Tracking: v=1; b=H4sIAAAAAAAC/23QTWrDMBAF4KsEresy+htbWfUeIYSRLNdqE6tYq WgJvnvllFITe/ngzfdgbiz5MfjE9rsbG30OKcShBHzaMdfT8Oqr0JbMBAgE5KrKl5MNQ3tyvXf vqVIItbYEaAhYOfoYfRe+7uDh+JvTp33z7jorc6MP6RrH7/ti5nPvD8dHPPMKKqORmwZBkJcvL p7PZONIzy5e2DyQxZIwK0IUwmpOlqzUXc23CLkgxJqQhWi0x1pBh074LUL9EzWsvpRVIVQN2qI j0zW0RegFweWK0IWAVkiuqGta0z4S0zT9AKfpzlfOAQAA X-Change-ID: 20260614-vm_bind_checks-46075ba069a0 To: Boris Brezillon , Steven Price , Liviu Dudau , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Heiko Stuebner , Grant Likely Cc: dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, =?utf-8?q?Adri=C3=A1n_Larumbe?= X-Mailer: b4 0.15.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=2843; i=adrian.larumbe@collabora.com; h=from:subject:message-id; bh=BzPcB8VL4XQ1XaR8ZVOGMU5zx/WA0ZHDE4uqZYUuC30=; b=owEB7QES/pANAwAKAQ4mfkzuU0M9AcsmYgBqXkNZt2+Pf3rIF6HJE6DXGeTz3v9Vl5W8SsSM/ NFK2BKtuKCJAbMEAAEKAB0WIQQyQDDowAUXXfk3B6QOJn5M7lNDPQUCal5DWQAKCRAOJn5M7lND PeRDC/4hdum/lLbdZUNfMwcY/m1Joe1GU8YLUpwLTrYpzxvzzY7kvreyR7LeZeegjtmG7PWApqI kdF2r1sfrO87BOuTJUBkRKpxkbPvF6QWiSwzYVvZryGxSbtM35D7ADlMfBXc6Mma6RCGXWILt+A v3Ky1WsgktUHaom8HE7j1h8xFxX4a4cCNMjQrk8YkyhMdLE5xiu5COr7QnbfEg49im4emi/aGgM bQwrXPwGMZtkEOa8ELZ8B+iqNRfl2XlUT65+nFpp+rB7kh7t8M0ec1lB2oqwG+Fv1B6ZV5Hhh3R XDgId4MTjSLJzY6tJHgaxwDVQv12ia0GWdL/iSCY9uGWVz0taDVpqyvHuK3rR9wYSyTDo0YJk+r 8q07byUtouR2sx0JuSvDWyiCjmWIF4dJRMtIsDbuzLMvCMcf/iNopNZGH89NLiLXiMxqxozEalb +auPWXCf2tSt9SkoPficQyIczkf4J2l7BZC/oLi23/Xr6Y4mYfVp1L3AOvBdFnWrhf0GM= X-Developer-Key: i=adrian.larumbe@collabora.com; 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 v6: - Filled in 'Fixes' commit tag for first patch in the series. - Link to v5: https://patch.msgid.link/20260713-vm_bind_checks-v5-0-0d2314af8d9d@collabora.com 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: 35fff4830cb999b5496ae892a85516fef2912438 change-id: 20260614-vm_bind_checks-46075ba069a0 Best regards, -- Adrián Larumbe