drm/i915: consider min_page_size when migrating
We can only force migrate an object if the existing object size is
compatible with the new destinations min_page_size for the region.
Currently we blow up with something like:
[ 2857.497462] kernel BUG at drivers/gpu/drm/i915/gt/intel_migrate.c:431!
[ 2857.497497] invalid opcode: 0000 [#1] PREEMPT SMP NOPTI
[ 2857.497502] CPU: 1 PID: 8921 Comm: i915_selftest Tainted: G U W 5.18.0-rc1-drm-tip+ #27
[ 2857.497513] RIP: 0010:emit_pte.cold+0x11a/0x17e [i915]
[ 2857.497646] Code: 00 48 c7 c2 f0 cd c1 a0 48 c7 c7 e9 99 bd a0 e8 d2 77 5d e0 bf 01 00 00 00 e8 08 47 5d e0 31 f6 bf 09 00 00 00 e8 3c 7b 4d e0 <0f> 0b 48 c7 c1 e0 2a c5 a0 ba 34 00 00 00 48 c7 c6 00 ce c1 a0 48
[ 2857.497654] RSP: 0018:
ffffc900000f7748 EFLAGS:
00010246
[ 2857.497658] RAX:
0000000000000000 RBX:
ffffc900000f77c8 RCX:
0000000000000006
[ 2857.497662] RDX:
0000000000000000 RSI:
0000000000000000 RDI:
0000000000000009
[ 2857.497665] RBP:
0000000000000000 R08:
0000000000000001 R09:
0000000000000001
[ 2857.497668] R10:
0000000000022302 R11:
ffff88846dea08f0 R12:
0000000000010000
[ 2857.497672] R13:
0000000001880000 R14:
000000000000081b R15:
ffff888106b7c040
[ 2857.497675] FS:
00007f0d4c4e0600(0000) GS:
ffff88845da80000(0000) knlGS:
0000000000000000
[ 2857.497679] CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
[ 2857.497682] CR2:
00007f113966c088 CR3:
0000000211e60003 CR4:
00000000003706e0
[ 2857.497686] DR0:
0000000000000000 DR1:
0000000000000000 DR2:
0000000000000000
[ 2857.497689] DR3:
0000000000000000 DR6:
00000000fffe0ff0 DR7:
0000000000000400
[ 2857.497692] Call Trace:
[ 2857.497694] <TASK>
[ 2857.497697] intel_context_migrate_copy+0x1e5/0x4f0 [i915]
Signed-off-by: Matthew Auld <matthew.auld@intel.com>
Cc: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Cc: Nirmoy Das <nirmoy.das@linux.intel.com>
Reviewed-by: Nirmoy Das <nirmoy.das@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220420181613.70033-1-matthew.auld@intel.com
projects / kernel.git / commit