There could be multiple ways in the scenario configuration to specify that
no INTx allocation is explicitly allocation to a prelaunched VM:
* Do not have a `pt_intx` node at all.
* Have a `pt_intx` node with no text.
* Have a `pt_intx` node with a text that has nothing but whitespaces,
tabs and newlines.
The current implementation only supports the first way, and will cause
build-time failures when a scenario configuration uses the latter two. The
following changes are introduced by this patch to fix such errors.
* The INTx static allocator queries the text() of `pt_intx` nodes
directly to gracefully handle `pt_intx` nodes with no text.
* The XSLT of pt_intx.c clears all kinds of white spaces from the text of
`pt_intx` nodes before calculating the set of allocated INTx mappings.
Tracked-On: #6287
Signed-off-by: Junjie Mao <junjie.mao@intel.com>
This patch allocates interrupt lines among VMs according to the PCI devices
assigned to them.
v1 -> v2:
* Remove the usage of VMx_PT_INTX_NUM macro in vm_configuration.c; use the
concrete numbers directly.
* The static allocator will also complain if any interrupt line is allocated to
a VM with LAPIC_PASSTHROUGH.
v2 -> v3:
* Fix a minor coding style issue.
Tracked-On: #6287
Signed-off-by: Junjie Mao <junjie.mao@intel.com>
Create an intx.py which is a static allocator to allocate the irq
resources. The available irq list is based on the native irqs which
are in range [0, 15] and are not used by native os.
Tracked-On: #5980
Signed-off-by: Yang,Yu-chu <yu-chu.yang@intel.com>
Reviewed-by: Junjie Mao <junjie.mao@intel.com>
