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| author | Dimitri Sivanich <sivanich@hpe.com> | 2024-04-24 10:16:29 +0300 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2024-04-26 12:57:36 +0300 |
| commit | d74169ceb0d2e32438946a2f1f9fc8c803304bd6 (patch) | |
| tree | 3c9e7d3d50d317c44291f01c5779f1ec0fab0b08 /include | |
| parent | 9e7ee0f045395dc8aa55fbdc164c062484f4c88d (diff) | |
| download | linux-d74169ceb0d2e32438946a2f1f9fc8c803304bd6.tar.xz | |
iommu/vt-d: Allocate DMAR fault interrupts locally
The Intel IOMMU code currently tries to allocate all DMAR fault interrupt
vectors on the boot cpu. On large systems with high DMAR counts this
results in vector exhaustion, and most of the vectors are not initially
allocated socket local.
Instead, have a cpu on each node do the vector allocation for the DMARs on
that node. The boot cpu still does the allocation for its node during its
boot sequence.
Signed-off-by: Dimitri Sivanich <sivanich@hpe.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Link: https://lore.kernel.org/r/Zfydpp2Hm+as16TY@hpe.com
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/dmar.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/dmar.h b/include/linux/dmar.h index e34b601b71fd..499bb2c63483 100644 --- a/include/linux/dmar.h +++ b/include/linux/dmar.h @@ -117,7 +117,7 @@ extern int dmar_remove_dev_scope(struct dmar_pci_notify_info *info, int count); /* Intel IOMMU detection */ void detect_intel_iommu(void); -extern int enable_drhd_fault_handling(void); +extern int enable_drhd_fault_handling(unsigned int cpu); extern int dmar_device_add(acpi_handle handle); extern int dmar_device_remove(acpi_handle handle); |