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x86-iommu: switch intr_supported to OnOffAuto type

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Switch the intr_supported variable from a boolean to OnOffAuto type so
that we can know whether the user specified it or not.  With that
we'll have a chance to help the user to choose more wisely where
possible.  Introduce x86_iommu_ir_supported() to mask these changes.

No functional change at all.

Signed-off-by: Peter Xu <peterx@redhat.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Peter Xu 2018-12-20 13:40:36 +08:00 • committed by Michael S. Tsirkin
parent b2fc91db84
commit a924b3d8df
6 changed files with 24 additions and 11 deletions
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2
hw/i386/amd_iommu.c
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@ -1233,7 +1233,7 @@ static int amdvi_int_remap_msi(AMDVIState *iommu,
}
/* validate that we are configure with intremap=on */
if (!X86_IOMMU_DEVICE(iommu)->intr_supported) {
if (!x86_iommu_ir_supported(X86_IOMMU_DEVICE(iommu))) {
trace_amdvi_err("Interrupt remapping is enabled in the guest but "
"not in the host. Use intremap=on to enable interrupt "
"remapping in amd-iommu.");