Support source-id checking for interrupt remapping, and then
isolates interrupts for guests/VMs with assigned devices.
Eric raised pci rebalance issue with VT-d. Yes, it's an issue now.
Linux needs to handle pci rebalance changes to DRHD scopes. It's
tricky to support it. This patch just supports source-id for
interrupt remapping, won't touch that.
The patchset can be applied on linux-2.6-tip tree.
v2 -> v3 changelog:
As Ingo suggested, restructured some code and fixed some code
style issues.
v1 -> v2 changelog:
Access PCI directly (read_pci_config_byte) to parse IOAPIC,
instead of PCI related discovery, because PCI subsystem is not
initialized at that time.
Weidong Han (2):
Intel-IOMMU, intr-remap: set the whole 128bits of irte when
modify/free it
Intel-IOMMU, intr-remap: source-id checking
arch/x86/kernel/apic/io_apic.c | 6 ++
drivers/pci/intr_remapping.c | 160 +++++++++++++++++++++++++++++++++++----
drivers/pci/intr_remapping.h | 2 +
include/linux/dmar.h | 11 +++
4 files changed, 162 insertions(+), 17 deletions(-)
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