On Thu, Jul 18, 2019 at 01:54:03PM +0200, 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 include some fixes for the PowerNV machine and > 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 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-4.1
I've applied 1-8 to ppc-for-4.2, still looking at the rest.
>
> Thanks,
>
> C.
>
> Changes since v1:
>
> - minor extra fixes
> - split the escalation support in different patches
> - kept the XiveRouter type for XiveTCTX back pointer (will address
> this in P10)
> - removed pnv_xive_vst_size(). Really broken on indirect tables.
> - improved the dump of the NVT table
> - introduce pnv_xive_get_block_id()
>
>
> Cédric Le Goater (17):
> ppc/xive: use an abstract type for XiveNotifier
> ppc/pnv: add more dummy XSCOM addresses for the P9 CAPP
> ppc/xive: Implement TM_PULL_OS_CTX special command
> ppc/xive: Provide backlog support
> ppc/xive: Provide escalation support
> ppc/xive: Provide unconditional escalation support
> ppc/xive: Provide silent escalation support
> ppc/xive: Improve 'info pic' support
> ppc/xive: Extend XiveTCTX with a XiveRouter pointer
> ppc/xive: Introduce xive_tctx_ipb_update()
> ppc/xive: Synthesize interrupt from the saved IPB in the NVT
> ppc/pnv: Remove pnv_xive_vst_size() routine
> ppc/pnv: Dump the XIVE NVT table
> ppc/pnv: Skip empty slots of the XIVE NVT table
> ppc/pnv: Grab the XiveRouter object from XiveTCTX in
> pnv_xive_get_tctx()
> ppc/pnv: Introduce a pnv_xive_get_block_id() interface to XiveRouter
> ppc/pnv: quiesce some XIVE errors
>
> include/hw/ppc/pnv_xive.h | 3 -
> include/hw/ppc/xive.h | 21 +--
> include/hw/ppc/xive_regs.h | 34 +++++
> hw/intc/pnv_xive.c | 210 +++++++++++++------------
> hw/intc/spapr_xive.c | 7 +-
> hw/intc/xive.c | 304 ++++++++++++++++++++++++++++++-------
> hw/ppc/pnv_xscom.c | 20 +++
> 7 files changed, 428 insertions(+), 171 deletions(-)
>
--
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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