drm/bridge: cdns-mhdp: Update bus_flags based on compatible string #45
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* Add support for display info bus_flags for specific platform based on the compatible string. * Use cdns_mhdp_device structure as parameter instead of using separate sink and host structure Signed-off-by: Yuti Amonkar <[email protected]>
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nmenon
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Nov 27, 2019
Add several BPF kselftest cases for tail calls which test the various patch directions, and that multiple locations are patched in same and different programs. # ./test_progs -n 45 #45/1 tailcall_1:OK #45/2 tailcall_2:OK #45/3 tailcall_3:OK #45/4 tailcall_4:OK #45/5 tailcall_5:OK #45 tailcalls:OK Summary: 1/5 PASSED, 0 SKIPPED, 0 FAILED I've also verified the JITed dump after each of the rewrite cases that it matches expectations. Also regular test_verifier suite passes fine which contains further tail call tests: # ./test_verifier [...] Summary: 1563 PASSED, 0 SKIPPED, 0 FAILED Checked under JIT, interpreter and JIT + hardening. Signed-off-by: Daniel Borkmann <[email protected]> Signed-off-by: Alexei Starovoitov <[email protected]> Acked-by: Andrii Nakryiko <[email protected]> Link: https://lore.kernel.org/bpf/3d6cbecbeb171117dccfe153306e479798fb608d.1574452833.git.daniel@iogearbox.net
nmenon
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Apr 26, 2020
syzbot wrote: | ============================= | WARNING: suspicious RCU usage | 5.7.0-rc1+ #45 Not tainted | ----------------------------- | net/openvswitch/conntrack.c:1898 RCU-list traversed in non-reader section!! | | other info that might help us debug this: | rcu_scheduler_active = 2, debug_locks = 1 | ... | | stack backtrace: | Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.12.0-0-ga698c8995f-prebuilt.qemu.org 04/01/2014 | Workqueue: netns cleanup_net | Call Trace: | ... | ovs_ct_exit | ovs_exit_net | ops_exit_list.isra.7 | cleanup_net | process_one_work | worker_thread To avoid that warning, invoke the ovs_ct_exit under ovs_lock and add lockdep_ovsl_is_held as optional lockdep expression. Link: https://lore.kernel.org/lkml/[email protected] Fixes: 11efd5c ("openvswitch: Support conntrack zone limit") Cc: Pravin B Shelar <[email protected]> Cc: Yi-Hung Wei <[email protected]> Reported-by: [email protected] Signed-off-by: Tonghao Zhang <[email protected]> Acked-by: Pravin B Shelar <[email protected]> Signed-off-by: David S. Miller <[email protected]>
sjakhadecdns
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Apr 26, 2021
xdp_return_frame() may be called outside of NAPI context to return xdpf back to page_pool. xdp_return_frame() calls __xdp_return() with napi_direct = false. For page_pool memory model, __xdp_return() calls xdp_return_frame_no_direct() unconditionally and below false negative kernel BUG throw happened under preempt-rt build: [ 430.450355] BUG: using smp_processor_id() in preemptible [00000000] code: modprobe/3884 [ 430.451678] caller is __xdp_return+0x1ff/0x2e0 [ 430.452111] CPU: 0 PID: 3884 Comm: modprobe Tainted: G U E 5.12.0-rc2+ #45 Changes in v2: - This patch fixes the issue by making xdp_return_frame_no_direct() is only called if napi_direct = true, as recommended for better by Jesper Dangaard Brouer. Thanks! Fixes: 2539650 ("xdp: Helpers for disabling napi_direct of xdp_return_frame") Signed-off-by: Ong Boon Leong <[email protected]> Acked-by: Jesper Dangaard Brouer <[email protected]> Signed-off-by: David S. Miller <[email protected]>
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based on the compatible string.
separate sink and host structure
Signed-off-by: Yuti Amonkar [email protected]