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[Qemu-ppc] [PATCH v3 00/18] ppc/pnv: add XIVE support for KVM guests
From: |
Cédric Le Goater |
Subject: |
[Qemu-ppc] [PATCH v3 00/18] ppc/pnv: add XIVE support for KVM guests |
Date: |
Wed, 31 Jul 2019 16:12:15 +0200 |
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 add new per-CPU PowerNV machines and 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-4.1
Thanks,
C.
Changes since v2:
- introduced the XiveFabric and XivePresenter interfaces
- removed the need of a XiveRouter pointer under XiveTCTX
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 (18):
ppc/pnv: Introduce PowerNV machines with fixed CPU models
tests/boot-serial-test: add support for all the PowerNV machines
ppc/xive: Introduce the XiveFabric and XivePresenter interfaces
ppc/pnv: Implement the XiveFabric and XivePresenter interfaces
ppc/spapr: Implement the XiveFabric and XivePresenter interfaces
ppc/xive: Use the XiveFabric and XivePresenter interfaces
ppc/xive: Extend the TIMA operation with a XivePresenter parameter
ppc/pnv: Clarify how the TIMA is accessed on a multichip system
ppc/xive: Move the TIMA operations to the controller model
ppc/xive: Introduce a xive_tctx_ipb_update() helper
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: Introduce a pnv_xive_block_id() helper
ppc/pnv: Extend XivePresenter with a get_block_id() handler
ppc/pnv: Quiesce some XIVE errors
ppc/xive: Introduce a xive_os_cam_decode() helper
include/hw/ppc/pnv.h | 13 ++
include/hw/ppc/pnv_xive.h | 3 -
include/hw/ppc/spapr_irq.h | 6 +
include/hw/ppc/xive.h | 71 ++++++--
include/hw/ppc/xive_regs.h | 24 +++
hw/intc/pnv_xive.c | 356 ++++++++++++++++++++++++-------------
hw/intc/spapr_xive.c | 80 ++++++++-
hw/intc/xive.c | 319 ++++++++++++++++++---------------
hw/ppc/pnv.c | 102 ++++++++++-
hw/ppc/spapr.c | 34 ++++
hw/ppc/spapr_irq.c | 25 +++
tests/boot-serial-test.c | 3 +-
12 files changed, 743 insertions(+), 293 deletions(-)
--
2.21.0
- [Qemu-ppc] [PATCH v3 00/18] ppc/pnv: add XIVE support for KVM guests,
Cédric Le Goater <=
- [Qemu-ppc] [PATCH v3 02/18] tests/boot-serial-test: add support for all the PowerNV machines, Cédric Le Goater, 2019/07/31
- [Qemu-ppc] [PATCH v3 01/18] ppc/pnv: Introduce PowerNV machines with fixed CPU models, Cédric Le Goater, 2019/07/31
- [Qemu-ppc] [PATCH v3 03/18] ppc/xive: Introduce the XiveFabric and XivePresenter interfaces, Cédric Le Goater, 2019/07/31
- [Qemu-ppc] [PATCH v3 04/18] ppc/pnv: Implement the XiveFabric and XivePresenter interfaces, Cédric Le Goater, 2019/07/31
- [Qemu-ppc] [PATCH v3 05/18] ppc/spapr: Implement the XiveFabric and XivePresenter interfaces, Cédric Le Goater, 2019/07/31
- [Qemu-ppc] [PATCH v3 06/18] ppc/xive: Use the XiveFabric and XivePresenter interfaces, Cédric Le Goater, 2019/07/31
- [Qemu-ppc] [PATCH v3 07/18] ppc/xive: Extend the TIMA operation with a XivePresenter parameter, Cédric Le Goater, 2019/07/31
- [Qemu-ppc] [PATCH v3 08/18] ppc/pnv: Clarify how the TIMA is accessed on a multichip system, Cédric Le Goater, 2019/07/31
- [Qemu-ppc] [PATCH v3 09/18] ppc/xive: Move the TIMA operations to the controller model, Cédric Le Goater, 2019/07/31