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5c0139a8c2
Currently we set the initial isolation/allocation state for DRCs associated with coldplugged LMBs to ISOLATED/UNUSABLE, respectively, under the assumption that the guest will move this state to UNISOLATED/USABLE. In fact, this is only the case for LMBs added via hotplug. For coldplugged LMBs, the guest actually assumes the initial state to be UNISOLATED/USABLE. In practice, this only becomes an issue when we attempt to unplug one of these LMBs, where the guest kernel will issue an rtas-get-sensor-state call to check that the corresponding DRC is in an USABLE state before it will release the LMB back to QEMU. If the returned state is otherwise, the guest will assume no further action is needed, which bypasses the QEMU-side cleanup that occurs during the USABLE->UNUSABLE transition. This results in LMBs and their corresponding pc-dimm devices to stick around indefinitely. This patch fixes the issue by manually setting DRCs associated with cold-plugged LMBs to UNISOLATED/ALLOCATED, but leaving the hotplug state untouched. As it turns out, this is analogous to the handling for cold-plugged CPUs in spapr_core_plug(). Cc: qemu-ppc@nongnu.org Cc: David Gibson <david@gibson.dropbear.id.au> Cc: Bharata B Rao <bharata@linux.vnet.ibm.com> Cc: Greg Kurz <gkurz@linux.vnet.ibm.com> Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com> Signed-off-by: David Gibson <david@gibson.dropbear.id.au> |
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| .. | ||
| e500-ccsr.h | ||
| e500.c | ||
| e500.h | ||
| e500plat.c | ||
| fdt.c | ||
| mac_newworld.c | ||
| mac_oldworld.c | ||
| mac.h | ||
| Makefile.objs | ||
| mpc8544_guts.c | ||
| mpc8544ds.c | ||
| pnv_core.c | ||
| pnv_lpc.c | ||
| pnv_xscom.c | ||
| pnv.c | ||
| ppc4xx_devs.c | ||
| ppc4xx_pci.c | ||
| ppc405_boards.c | ||
| ppc405_uc.c | ||
| ppc405.h | ||
| ppc440_bamboo.c | ||
| ppc_booke.c | ||
| ppc.c | ||
| ppce500_spin.c | ||
| prep.c | ||
| spapr_cpu_core.c | ||
| spapr_drc.c | ||
| spapr_events.c | ||
| spapr_hcall.c | ||
| spapr_iommu.c | ||
| spapr_ovec.c | ||
| spapr_pci_vfio.c | ||
| spapr_pci.c | ||
| spapr_rng.c | ||
| spapr_rtas_ddw.c | ||
| spapr_rtas.c | ||
| spapr_rtc.c | ||
| spapr_vio.c | ||
| spapr.c | ||
| trace-events | ||
| virtex_ml507.c | ||