On Fri, Nov 22, 2019 at 07:17:05PM +0100, Cédric Le Goater wrote: > On 15/11/2019 17:24, Cédric Le Goater wrote: > > Hello, > > > > The QEMU PowerNV machine emulates a baremetal OpenPOWER system and > > acts as an hypervisor (L0). Supporting emulation of KVM to run guests > > (L1) requires a few more extensions, among which guest support for the > > XIVE interrupt controller on POWER9 processor. > > > > The following changes extend the XIVE models with the new XiveFabric > > and XivePresenter interfaces to provide support for XIVE escalations > > and interrupt resend. This mechanism is used by XIVE to notify the > > hypervisor that a vCPU is not dispatched on a HW thread. Tested on a > > QEMU PowerNV machine and a simple QEMU pseries guest doing network on > > a local bridge. > > > > The XIVE interrupt controller offers a way to increase the XIVE > > resources per chip by configuring multiple XIVE blocks on a chip. This > > is not currently supported by the model. However, some configurations, > > such as OPAL/skiboot, use one block-per-chip configuration with some > > optimizations. One of them is to override the hardwired chip ID by the > > block id in the PowerBUS operations and for CAM line compares. This > > patchset improves the support for this setup. Tested with 4 chips. > > > > A series from Suraj adding guest support in the Radix MMU model of the > > QEMU PowerNV machine is still required and will be send later. The > > whole patchset can be found under : > > > > https://github.com/legoater/qemu/tree/powernv-4.2 > > > [ ... ] > > > Cédric Le Goater (23): > > ppc/xive: Record the IPB in the associated NVT > > ppc/xive: Introduce helpers for the NVT id > > ppc/pnv: Remove pnv_xive_vst_size() routine > > ppc/pnv: Dump the XIVE NVT table > > ppc/pnv: Quiesce some XIVE errors > > ppc/xive: Introduce OS CAM line helpers > > ppc/xive: Check V bit in TM_PULL_POOL_CTX > > ppc/xive: Introduce a XivePresenter interface > > ppc/xive: Implement the XivePresenter interface > > David, > > I have reworked the following patches to address Greg's comments > and your comment on "ppc/pnv: Dump the XIVE NVT table". > > Shall I wait for some feedback from you or just resend ?
Just resend, thanks.
--
David Gibson | I'll have my music baroque, and my code
david AT gibson.dropbear.id.au | minimalist, thank you. NOT _the_ _other_
| _way_ _around_!
http://www.ozlabs.org/~dgibson
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