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1052ab67f4
qemu/hw/ppc
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David Gibson 1052ab67f4 spapr: Don't clamp RMA to 16GiB on new machine types 
In spapr_machine_init() we clamp the size of the RMA to 16GiB and the
comment saying why doesn't make a whole lot of sense.  In fact, this was
done because the real mode handling code elsewhere limited the RMA in TCG
mode to the maximum value configurable in LPCR[RMLS], 16GiB.

But,
 * Actually LPCR[RMLS] has been able to encode a 256GiB size for a very
   long time, we just didn't implement it properly in the softmmu
 * LPCR[RMLS] shouldn't really be relevant anyway, it only was because we
   used to abuse the RMOR based translation mode in order to handle the
   fact that we're not modelling the hypervisor parts of the cpu

We've now removed those limitations in the modelling so the 16GiB clamp no
longer serves a function.  However, we can't just remove the limit
universally: that would break migration to earlier qemu versions, where
the 16GiB RMLS limit still applies, no matter how bad the reasons for it
are.

So, we replace the 16GiB clamp, with a clamp to a limit defined in the
machine type class.  We set it to 16 GiB for machine types 4.2 and earlier,
but set it to 0 meaning unlimited for the new 5.0 machine type.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Greg Kurz <groug@kaod.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
2020-03-17 09:41:15 +11:00
..
e500-ccsr.h ppc: do not use ../ in include files 2013-03-01 13:57:33 +01:00
e500.c Merge tag 'patchew/20200219160953.13771-1-imammedo@redhat.com' of https://github.com/patchew-project/qemu into HEAD 2020-02-25 09:19:00 +01:00
e500.h platform-bus-device: use device plug callback instead of machine_done notifier 2018-05-10 18:10:56 +01:00
e500plat.c ppc/e500: use memdev for RAM 2020-02-19 16:50:00 +00:00
fdt.c target/ppc: Split page size information into a separate allocation 2018-04-27 18:05:22 +10:00
fw_cfg.c hw/ppc: Implement fw_cfg_arch_key_name() 2019-05-23 14:10:31 +02:00
Kconfig ppc/pnv: Fix PCI_EXPRESS dependency 2020-02-21 09:15:03 +11:00
mac_newworld.c ppc/mac_newworld: use memdev for RAM 2020-02-19 16:50:00 +00:00
mac_oldworld.c hw: Make MachineClass::is_default a boolean type 2020-02-28 14:57:19 -05:00
mac.h ide: Include hw/ide/internal a bit less outside hw/ide/ 2019-08-16 13:31:52 +02:00
Makefile.objs spapr: Add NVDIMM device support 2020-02-21 09:15:04 +11:00
mpc8544_guts.c sysemu: Split sysemu/runstate.h off sysemu/sysemu.h 2019-08-16 13:37:36 +02:00
mpc8544ds.c ppc/e500: use memdev for RAM 2020-02-19 16:50:00 +00:00
pnv_bmc.c ppc/pnv: Add a "pnor" const link property to the BMC internal simulator 2020-01-08 11:01:59 +11:00
pnv_core.c ppc/pnv: change the PowerNV machine devices to be non user creatable 2020-02-02 14:07:57 +11:00
pnv_homer.c ppc/pnv: change the PowerNV machine devices to be non user creatable 2020-02-02 14:07:57 +11:00
pnv_lpc.c hw/ppc/pnv: Fix typo in comment 2020-03-17 09:41:14 +11:00
pnv_occ.c ppc/pnv: change the PowerNV machine devices to be non user creatable 2020-02-02 14:07:57 +11:00
pnv_pnor.c ppc/pnv: improve error logging when a PNOR update fails 2020-02-02 14:07:57 +11:00
pnv_psi.c add device_legacy_reset function to prepare for reset api change 2020-01-30 16:02:03 +00:00
pnv_xscom.c ppc/pnv: Introduce PnvChipClass::xscom_pcba() method 2019-12-17 10:59:11 +11:00
pnv.c Merge tag 'patchew/20200219160953.13771-1-imammedo@redhat.com' of https://github.com/patchew-project/qemu into HEAD 2020-02-25 09:19:00 +01:00
ppc4xx_devs.c ppc/{ppc440_bamboo, sam460ex}: use memdev for RAM 2020-02-19 16:50:00 +00:00
ppc4xx_pci.c Include hw/hw.h exactly where needed 2019-08-16 13:31:52 +02:00
ppc405_boards.c ppc/ppc405_boards: use memdev for RAM 2020-02-19 16:50:00 +00:00
ppc405_uc.c Include hw/boards.h a bit less 2019-08-16 13:31:53 +02:00
ppc405.h ppc4xx: Export ECB and PLB emulation 2017-09-08 09:30:55 +10:00
ppc440_bamboo.c ppc/{ppc440_bamboo, sam460ex}: use memdev for RAM 2020-02-19 16:50:00 +00:00
ppc440_pcix.c Include hw/hw.h exactly where needed 2019-08-16 13:31:52 +02:00
ppc440_uc.c Let cpu_[physical]_memory() calls pass a boolean 'is_write' argument 2020-02-20 14:47:08 +01:00
ppc440.h ppc440_uc: Basic emulation of PPC440 DMA controller 2018-07-03 09:56:52 +10:00
ppc_booke.c sysemu: Split sysemu/runstate.h off sysemu/sysemu.h 2019-08-16 13:37:36 +02:00
ppc.c hw/ppc/prep: Remove the deprecated "prep" machine and the OpenHackware BIOS 2020-02-02 14:07:57 +11:00
ppce500_spin.c Clean up inclusion of sysemu/sysemu.h 2019-08-16 13:31:53 +02:00
prep_systemio.c qdev: set properties with device_class_set_props() 2020-01-24 20:59:15 +01:00
prep.c hw/ppc/prep: Remove the deprecated "prep" machine and the OpenHackware BIOS 2020-02-02 14:07:57 +11:00
rs6000_mc.c qdev: set properties with device_class_set_props() 2020-01-24 20:59:15 +01:00
sam460ex.c ppc/{ppc440_bamboo, sam460ex}: use memdev for RAM 2020-02-19 16:50:00 +00:00
spapr_caps.c ppc: spapr: Handle "ibm,nmi-register" and "ibm,nmi-interlock" RTAS calls 2020-02-03 11:33:11 +11:00
spapr_cpu_core.c spapr, ppc: Remove VPM0/RMLS hacks for POWER9 2020-03-17 09:41:15 +11:00
spapr_drc.c spapr: Fix handling of unplugged devices during CAS and migration 2020-02-21 09:15:04 +11:00
spapr_events.c spapr: Handle pending hot plug/unplug requests at CAS 2020-03-17 09:41:14 +11:00
spapr_hcall.c spapr: Don't attempt to clamp RMA to VRMA constraint 2020-03-17 09:41:15 +11:00
spapr_iommu.c vmstate: replace DeviceState with VMStateIf 2020-01-06 18:41:32 +04:00
spapr_irq.c spapr, pnv, xive: Add a "xive-fabric" link to the XIVE router 2020-01-08 11:01:59 +11:00
spapr_nvdimm.c spapr: Fix Coverity warning while validating nvdimm options 2020-03-17 09:41:14 +11:00
spapr_ovec.c spapr: Simplify ovec diff 2019-12-17 10:39:48 +11:00
spapr_pci_nvlink2.c error: Clean up unusual names of Error * variables 2019-12-18 08:36:15 +01:00
spapr_pci_vfio.c Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
spapr_pci.c add device_legacy_reset function to prepare for reset api change 2020-01-30 16:02:03 +00:00
spapr_rng.c qdev: set properties with device_class_set_props() 2020-01-24 20:59:15 +01:00
spapr_rtas_ddw.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
spapr_rtas.c spapr/rtas: Print message from "ibm,os-term" 2020-02-21 09:15:03 +11:00
spapr_rtc.c Include migration/vmstate.h less 2019-08-16 13:31:52 +02:00
spapr_tpm_proxy.c qdev: set properties with device_class_set_props() 2020-01-24 20:59:15 +01:00
spapr_vio.c spapr: Implement get_dt_compatible() callback 2020-02-02 14:07:57 +11:00
spapr.c spapr: Don't clamp RMA to 16GiB on new machine types 2020-03-17 09:41:15 +11:00
trace-events spapr: Remove unhelpful tracepoints from spapr_irq_free_xics() 2019-10-04 19:08:22 +10:00
virtex_ml507.c Merge tag 'patchew/20200219160953.13771-1-imammedo@redhat.com' of https://github.com/patchew-project/qemu into HEAD 2020-02-25 09:19:00 +01:00