OpenE2K/qemu-e2k
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8d216d8c53
qemu-e2k/hw/intc
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Greg Kurz 8d216d8c53 xics/kvm: Fix fallback to emulated XICS 
Commit 4812f26152 tried to fix rollback path of xics_kvm_connect() but
it isn't enough. If we fail to create the KVM device, the guest fails
to boot later on with:

[    0.010817] pci 0000:00:00.0: Adding to iommu group 0
[    0.010863] irq: unknown-1 didn't like hwirq-0x1200 to VIRQ17 mapping (rc=-22)
[    0.010923] pci 0000:00:01.0: Adding to iommu group 0
[    0.010968] irq: unknown-1 didn't like hwirq-0x1201 to VIRQ17 mapping (rc=-22)
[    0.011543] EEH: No capable adapters found
[    0.011597] irq: unknown-1 didn't like hwirq-0x1000 to VIRQ17 mapping (rc=-22)
[    0.011651] audit: type=2000 audit(1563977526.000:1): state=initialized audit_enabled=0 res=1
[    0.011703] ------------[ cut here ]------------
[    0.011729] event-sources: Unable to allocate interrupt number for /event-sources/epow-events
[    0.011776] WARNING: CPU: 0 PID: 1 at arch/powerpc/platforms/pseries/event_sources.c:34 request_event_sources_irqs+0xbc/0x150
[    0.011828] Modules linked in:
[    0.011850] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 5.1.17-300.fc30.ppc64le #1
[    0.011886] NIP:  c0000000000d4fac LR: c0000000000d4fa8 CTR: c0000000018f0000
[    0.011923] REGS: c00000001e4c38d0 TRAP: 0700   Not tainted  (5.1.17-300.fc30.ppc64le)
[    0.011966] MSR:  8000000002029033 <SF,VEC,EE,ME,IR,DR,RI,LE>  CR: 28000284  XER: 20040000
[    0.012012] CFAR: c00000000011b42c IRQMASK: 0
[    0.012012] GPR00: c0000000000d4fa8 c00000001e4c3b60 c0000000015fc400 0000000000000051
[    0.012012] GPR04: 0000000000000001 0000000000000000 0000000000000081 772d6576656e7473
[    0.012012] GPR08: 000000001edf0000 c0000000014d4830 c0000000014d4830 6e6576652f20726f
[    0.012012] GPR12: 0000000000000000 c0000000018f0000 c000000000010bf0 0000000000000000
[    0.012012] GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
[    0.012012] GPR20: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
[    0.012012] GPR24: 0000000000000000 0000000000000000 c000000000ebbf00 c0000000000d5570
[    0.012012] GPR28: c000000000ebc008 c00000001fff8248 0000000000000000 0000000000000000
[    0.012372] NIP [c0000000000d4fac] request_event_sources_irqs+0xbc/0x150
[    0.012409] LR [c0000000000d4fa8] request_event_sources_irqs+0xb8/0x150
[    0.012445] Call Trace:
[    0.012462] [c00000001e4c3b60] [c0000000000d4fa8] request_event_sources_irqs+0xb8/0x150 (unreliable)
[    0.012513] [c00000001e4c3bf0] [c000000001042848] __machine_initcall_pseries_init_ras_IRQ+0xc8/0xf8
[    0.012563] [c00000001e4c3c20] [c000000000010810] do_one_initcall+0x60/0x254
[    0.012611] [c00000001e4c3cf0] [c000000001024538] kernel_init_freeable+0x35c/0x444
[    0.012655] [c00000001e4c3db0] [c000000000010c14] kernel_init+0x2c/0x148
[    0.012693] [c00000001e4c3e20] [c00000000000bdc4] ret_from_kernel_thread+0x5c/0x78
[    0.012736] Instruction dump:
[    0.012759] 38a00000 7c7f1b78 7f64db78 2c1f0000 2fbf0000 78630020 4180002c 409effa8
[    0.012805] 7fa4eb78 7f43d378 48046421 60000000 <0fe00000> 3bde0001 2c1e0010 7fde07b4
[    0.012851] ---[ end trace aa5785707323fad3 ]---

This happens because QEMU fell back on XICS emulation but didn't unregister
the RTAS calls from KVM. The emulated RTAS calls are hence never called and
the KVM ones return an error to the guest since the KVM device is absent.

The sanity checks in xics_kvm_disconnect() are abusive since we're freeing
the KVM device. Simply drop them.

Fixes: 4812f26152 "xics/kvm: Add proper rollback to xics_kvm_init()"
Signed-off-by: Greg Kurz <groug@kaod.org>
Message-Id: <156398744035.546975.7029414194633598474.stgit@bahia.lan>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2019-07-28 11:50:26 +10:00
..
allwinner-a10-pic.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
apic_common.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
apic.c Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
arm_gic_common.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
arm_gic_kvm.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
arm_gic.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
arm_gicv2m.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
arm_gicv3_common.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
arm_gicv3_cpuif.c hw/intc/arm_gicv3: Fix writes to ICC_CTLR_EL3 2019-05-23 14:47:44 +01:00
arm_gicv3_dist.c hw/intc/arm_gicv3: GICD_TYPER.SecurityExtn is RAZ if GICD_CTLR.DS == 1 2019-06-17 15:13:19 +01:00
arm_gicv3_its_common.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
arm_gicv3_its_kvm.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
arm_gicv3_kvm.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
arm_gicv3_redist.c hw/intc/arm_gicv3: Fix decoding of ID register range 2019-06-17 15:13:19 +01:00
arm_gicv3.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
armv7m_nvic.c target/arm: v8M: Check state of exception being returned from 2019-07-04 17:25:30 +01:00
aspeed_vic.c aspeed: vic: Add support for legacy register interface 2019-07-01 17:29:00 +01:00
bcm2835_ic.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
bcm2836_control.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
etraxfs_pic.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
exynos4210_combiner.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
exynos4210_gic.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
gic_internal.h
gicv3_internal.h
grlib_irqmp.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
heathrow_pic.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
i8259_common.c
i8259.c
imx_avic.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
imx_gpcv2.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
intc.c
ioapic_common.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
ioapic.c ioapic: kvm: Skip route updates for masked pins 2019-07-25 04:17:35 -04:00
Kconfig kconfig: add CONFIG_MSI_NONBROKEN 2019-03-18 09:39:57 +01:00
lm32_pic.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
Makefile.objs spapr/xive: add KVM support 2019-05-29 11:39:45 +10:00
mips_gic.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
nios2_iic.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
omap_intc.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
ompic.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
openpic_kvm.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
openpic.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
pl190.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
pnv_xive_regs.h ppc/pnv: add a XIVE interrupt controller model for POWER9 2019-03-12 14:33:04 +11:00
pnv_xive.c ppc/pnv: Rework cache watch model of PnvXIVE 2019-07-02 09:43:58 +10:00
puv3_intc.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
realview_gic.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
s390_flic_kvm.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
s390_flic.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
sh_intc.c Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
slavio_intctl.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
spapr_xive_kvm.c spapr/xive: Add proper rollback to kvmppc_xive_connect() 2019-07-02 10:11:44 +10:00
spapr_xive.c spapr/xive: rework the mapping the KVM memory regions 2019-07-02 09:43:58 +10:00
trace-events ioapic: allow buggy guests mishandling level-triggered interrupts to make progress 2019-05-17 15:19:39 +02:00
vgic_common.h
xics_kvm.c xics/kvm: Fix fallback to emulated XICS 2019-07-28 11:50:26 +10:00
xics_pnv.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
xics_spapr.c xics/spapr: Only emulated XICS should use RTAS/hypercalls emulation 2019-07-02 09:43:58 +10:00
xics.c xics/kvm: Add error propagation to ic*_set_kvm_state() functions 2019-07-02 09:43:58 +10:00
xilinx_intc.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
xive.c ppc/xive: Fix TM_PULL_POOL_CTX special operation 2019-07-02 09:43:58 +10:00
xlnx-pmu-iomod-intc.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
xlnx-zynqmp-ipi.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00