Hi, Keir,
These patches are modified version of the patches I sent about
one month before. These patches enable MSI support and limited MSI-X
support in XEN.
The basic idea including:
1) Keep vector global resource owned by xen, while split pirq into
per-domain information.
2) Domain0 kernel will operate msi resource for domain0/domU, while QEMU
will operate MSI resource for HVM domain.
3) MSI/MSI-X capabilities are setup by Xen, Dom0 sees MSI as normal
PIRQ.
4) MSI interrupts are handled like normal edge-triggered interrupts.
From my tests, I did not encounter MSI storm.
Per patch discription:
move_pci_function.patch
move some function and header files to generic places that are
needed by MSI.
pirq_per_domain.patch
changes pirq to per-domain
msi_irq_xen.patch
add MSI/MSI-X support to Xen. Most code is ported from 2.6.24.4
kernel.
msix_permission.patch
remove io_mem permission for MSI-X, since MSI-X facilities are
allocted through and located in PCI BAR.
msi_passthrough.patch
add MSI support to HVM domain.
msi_kernel.patch
add MSI/MSI-X support for PV domains including dom0.
What is your comments on the patches, Keir?
Thanks!
Haitao Shan
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Xen-devel mailing list
Xen-devel@lists.xensource.com
http://lists.xensource.com/xen-devel
Hi, Keir,
Resend this mail as plain text mail. Sorry for my mistake.
These patches are modified version of the patches I sent about
one month before. These patches enable MSI support and limited MSI-X
support in XEN.
The basic idea including:
1) Keep vector global resource owned by xen, while split pirq into
per-domain information.
2) Domain0 kernel will operate msi resource for domain0/domU, while QEMU
will operate MSI resource for HVM domain.
3) MSI/MSI-X capabilities are setup by Xen, Dom0 sees MSI as normal
PIRQ.
4) MSI interrupts are handled like normal edge-triggered interrupts.
From my tests, I did not encounter MSI storm.
Per patch discription:
move_pci_function.patch
move some function and header files to generic places that are
needed by MSI.
pirq_per_domain.patch
changes pirq to per-domain
msi_irq_xen.patch
add MSI/MSI-X support to Xen. Most code is ported from 2.6.24.4
kernel.
msix_permission.patch
remove io_mem permission for MSI-X, since MSI-X facilities are
allocted through and located in PCI BAR.
msi_passthrough.patch
add MSI support to HVM domain.
msi_kernel.patch
add MSI/MSI-X support for PV domains including dom0.
What is your comments on the patches, Keir?
Thanks!
Haitao Shan
_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xensource.com
http://lists.xensource.com/xen-devel