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360930985e
This reverts commit e101bf95ea.
Caused a regression:
Samsung Odyssey Neo G9, running at 5120x1440@240/VRR, connected to Navi
21 via DisplayPort, blanks and the GPU hangs while starting the Steam
game Assetto Corsa Competizione (via Proton 7.0).
Example dmesg excerpt:
amdgpu 0000:0c:00.0: [drm] ERROR [CRTC:82:crtc-0] flip_done timed out
NMI watchdog: Watchdog detected hard LOCKUP on cpu 6
[...]
RIP: 0010:amdgpu_device_rreg.part.0+0x2f/0xf0 [amdgpu]
Code: 41 54 44 8d 24 b5 00 00 00 00 55 89 f5 53 48 89 fb 4c 3b a7 60 0b 00 00 73 6a 83 e2 02 74 29 4c 03 a3 68 0b 00 00 45 8b 24 24 <48> 8b 43 08 0f b7 70 3e 66 90 44 89 e0 5b 5d 41 5c 31 d2 31 c9 31
RSP: 0000:ffffb39a119dfb88 EFLAGS: 00000086
RAX: ffffffffc0eb96a0 RBX: ffff9e7963dc0000 RCX: 0000000000007fff
RDX: 0000000000000000 RSI: 0000000000004ff6 RDI: ffff9e7963dc0000
RBP: 0000000000004ff6 R08: ffffb39a119dfc40 R09: 0000000000000010
R10: ffffb39a119dfc40 R11: ffffb39a119dfc44 R12: 00000000000e05ae
R13: 0000000000000000 R14: ffff9e7963dc0010 R15: 0000000000000000
FS: 000000001012f6c0(0000) GS:ffff9e805eb80000(0000) knlGS:000000007fd40000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000461ca000 CR3: 00000002a8a20000 CR4: 0000000000350ee0
Call Trace:
<TASK>
dm_read_reg_func+0x37/0xc0 [amdgpu]
generic_reg_get2+0x22/0x60 [amdgpu]
optc1_get_crtc_scanoutpos+0x6a/0xc0 [amdgpu]
dc_stream_get_scanoutpos+0x74/0x90 [amdgpu]
dm_crtc_get_scanoutpos+0x82/0xf0 [amdgpu]
amdgpu_display_get_crtc_scanoutpos+0x91/0x190 [amdgpu]
? dm_read_reg_func+0x37/0xc0 [amdgpu]
amdgpu_get_vblank_counter_kms+0xb4/0x1a0 [amdgpu]
dm_pflip_high_irq+0x213/0x2f0 [amdgpu]
amdgpu_dm_irq_handler+0x8a/0x200 [amdgpu]
amdgpu_irq_dispatch+0xd4/0x220 [amdgpu]
amdgpu_ih_process+0x7f/0x110 [amdgpu]
amdgpu_irq_handler+0x1f/0x70 [amdgpu]
__handle_irq_event_percpu+0x46/0x1b0
handle_irq_event+0x34/0x80
handle_edge_irq+0x9f/0x240
__common_interrupt+0x66/0x110
common_interrupt+0x5c/0xd0
asm_common_interrupt+0x22/0x40
Reviewed-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Michel Dänzer <mdaenzer@redhat.com>
Signed-off-by: Hamza Mahfooz <hamza.mahfooz@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.