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| author | Qian Cai <cai@lca.pw> | 2020-03-17 11:03:26 -0400 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2020-03-19 15:15:05 +0100 |
| commit | c6f4ebdeba4cff590594df931ff1ee610c426431 (patch) | |
| tree | abc444f6ebc20189442460447da1fbc655034adf /drivers/acpi | |
| parent | 52355fb1919ef7ed9a38e0f3de6e928de1f57217 (diff) | |
| download | linux-c6f4ebdeba4cff590594df931ff1ee610c426431.tar.bz2 | |
iommu/vt-d: Silence RCU-list debugging warning in dmar_find_atsr()
dmar_find_atsr() calls list_for_each_entry_rcu() outside of an RCU read
side critical section but with dmar_global_lock held. Silence this
false positive.
drivers/iommu/intel-iommu.c:4504 RCU-list traversed in non-reader section!!
1 lock held by swapper/0/1:
#0: ffffffff9755bee8 (dmar_global_lock){+.+.}, at: intel_iommu_init+0x1a6/0xe19
Call Trace:
dump_stack+0xa4/0xfe
lockdep_rcu_suspicious+0xeb/0xf5
dmar_find_atsr+0x1ab/0x1c0
dmar_parse_one_atsr+0x64/0x220
dmar_walk_remapping_entries+0x130/0x380
dmar_table_init+0x166/0x243
intel_iommu_init+0x1ab/0xe19
pci_iommu_init+0x1a/0x44
do_one_initcall+0xae/0x4d0
kernel_init_freeable+0x412/0x4c5
kernel_init+0x19/0x193
Signed-off-by: Qian Cai <cai@lca.pw>
Acked-by: Lu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/acpi')
0 files changed, 0 insertions, 0 deletions