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amd_iommu: Fix APIC address check

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An MSI from I/O APIC may not exactly equal to APIC_DEFAULT_ADDRESS. In
fact, Windows 17763.3650 configures I/O APIC to set the dest_mode bit.
Cover the range assigned to APIC.

Fixes: 577c470f43 ("x86_iommu/amd: Prepare for interrupt remap support")
Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Message-Id: <20230921114612.40671-1-akihiko.odaki@daynix.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Akihiko Odaki 2023-09-21 20:46:11 +09:00 • committed by Michael S. Tsirkin
parent 845ec38ae1
commit 0114c45130
2 changed files with 2 additions and 9 deletions
Download patch file Download diff file Expand all files Collapse all files

9
hw/i386/amd_iommu.c
View file

@ -1246,13 +1246,8 @@ static int amdvi_int_remap_msi(AMDVIState *iommu,
return -AMDVI_IR_ERR;
}
if (origin->address & AMDVI_MSI_ADDR_HI_MASK) {
trace_amdvi_err("MSI address high 32 bits non-zero when "
"Interrupt Remapping enabled.");
return -AMDVI_IR_ERR;
}
if ((origin->address & AMDVI_MSI_ADDR_LO_MASK) != APIC_DEFAULT_ADDRESS) {
if (origin->address < AMDVI_INT_ADDR_FIRST ||
origin->address + sizeof(origin->data) > AMDVI_INT_ADDR_LAST + 1) {
trace_amdvi_err("MSI is not from IOAPIC.");
return -AMDVI_IR_ERR;
}