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I don't think it's critical to do this, but it's
best to keep uninit and error recovery consistent.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
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MSIX present bit is tested incorrectly, and only happens to work because
the bit we are testing is 0x1. Add braces to fix this.
Reported-by: Blue Swirl <blauwirbel@gmail.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
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Clean up msix vector usage state on load. Since guest might have control
over it through the device, the device will have to load this state from
file.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
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This fixes segfault reported by Kevin Wolf,
and simplifies the code in msix_save.
Reported-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
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Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
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Add functions implementing MSI-X support. First user will be virtio-pci.
Note that platform must set a flag to declare MSI supported: this
is a safety measure to avoid breaking platforms which should support
MSI-X but currently lack this in the interrupt controller emulation.
For PC this will be set by APIC.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
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