iommu/vt-d: Fix linker error on 32-bit
A recent commit broke the build on 32-bit x86. The linker throws these
messages:
ld: drivers/iommu/intel/perf.o: in function `dmar_latency_snapshot':
perf.c:(.text+0x40c): undefined reference to `__udivdi3'
ld: perf.c:(.text+0x458): undefined reference to `__udivdi3'
The reason are the 64-bit divides in dmar_latency_snapshot(). Use the
div_u64() helper function for those.
Fixes: 55ee5e67a59a ("iommu/vt-d: Add common code for dmar latency performance monitors")
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Link: https://lore.kernel.org/r/20210610083120.29224-1-joro@8bytes.org
1 file changed