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Re: [Xen-devel] [PATCH v2 0 of 4] interrupt remapping in HVM guests for Xen 4.0.2
On Fri, Nov 19, 2010 at 01:07:19PM +0000, Stefano Stabellini wrote:
> Hi all,
> this is the second version of the patch series that implements the
> mechanisms needed by a PV on HVM guest to remap interrupts and MSIs into
> pirqs in order to receive those interrupts and MSIs as xen events.
> This allows the guest to avoid any reads and writes to the emulated
> The series consists of 4 patches, 2 patches for the hypervisor and 2
> patches to qemu-xen; the changes are not interdependent.
I think this patch series was merged to xen-unstable here:
I can't find that from xen-4.0-testing.hg ..
I think it'd be good have this for Xen 4.0.2 aswell.
Any plans to backport?
> Changes compared to the last version:
> - Jan's comments have been addressed (the initialization of emuirq_pirq
> and pirq_emuirq has been fixed);
> - the new hvm specific part of physdev_map_pirq has been moved to a
> separate function, called physdev_hvm_map_pirq;
> - the hypercall PHYSDEVOP_get_nr_pirqs has been removed, a new hypercall
> PHYSDEVOP_get_free_pirq has been introduced instead to allow a guest to
> get a free pirq number from Xen; the hypervisor would keep that pirq
> free for the guest to use in a mapping.
> The list of patches follows:
> xen: interrupt remapping in HVM guests
> xen: introduce PHYSDEVOP_get_free_pirq
> qemu-xen: support PV on HVM MSI remapping
> qemu-xen: qemu-xen: let xen choose the pirq number
> Stefano Stabellini
> Xen-devel mailing list
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