hw/i386/pc.c | 7 +++++++ 1 file changed, 7 insertions(+)
heterogeneous cpus are not supported and hotplugging different
cpu model crashes QEMU:
qemu-system-x86_64 -cpu qemu64 -smp 1,maxcpus=2
(qemu) device_add host-x86_64-cpu,socket-id=1,core-id=0,thread-id=0,id=foo
(qemu) info cpus
error: failed to get MSR 0x38d
qemu-system-x86_64: target/i386/kvm.c:2121: kvm_get_msrs: Assertion `ret == cpu->kvm_msr_buf->nmsrs' failed.
Aborted (core dumped)
Gracefully fail hotplug process in case of user mistake.
Reported-by: Greg Kurz <groug@kaod.org>
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
---
hw/i386/pc.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/hw/i386/pc.c b/hw/i386/pc.c
index 05985d4..8e307f7 100644
--- a/hw/i386/pc.c
+++ b/hw/i386/pc.c
@@ -1876,8 +1876,15 @@ static void pc_cpu_pre_plug(HotplugHandler *hotplug_dev,
CPUArchId *cpu_slot;
X86CPUTopoInfo topo;
X86CPU *cpu = X86_CPU(dev);
+ MachineState *ms = MACHINE(hotplug_dev);
PCMachineState *pcms = PC_MACHINE(hotplug_dev);
+ if(!object_dynamic_cast(OBJECT(cpu), ms->cpu_type)) {
+ error_setg(errp, "Invalid CPU type, expected cpu type: '%s'",
+ ms->cpu_type);
+ return;
+ }
+
/* if APIC ID is not set, set it based on socket/core/thread properties */
if (cpu->apic_id == UNASSIGNED_APIC_ID) {
int max_socket = (max_cpus - 1) / smp_threads / smp_cores;
--
2.7.4
On 10/10/2017 14:34, Igor Mammedov wrote: > heterogeneous cpus are not supported and hotplugging different > cpu model crashes QEMU: > > qemu-system-x86_64 -cpu qemu64 -smp 1,maxcpus=2 > (qemu) device_add host-x86_64-cpu,socket-id=1,core-id=0,thread-id=0,id=foo > (qemu) info cpus > error: failed to get MSR 0x38d > qemu-system-x86_64: target/i386/kvm.c:2121: kvm_get_msrs: Assertion `ret == cpu->kvm_msr_buf->nmsrs' failed. > Aborted (core dumped) > > Gracefully fail hotplug process in case of user mistake. > > Reported-by: Greg Kurz <groug@kaod.org> > Signed-off-by: Igor Mammedov <imammedo@redhat.com> > --- > hw/i386/pc.c | 7 +++++++ > 1 file changed, 7 insertions(+) > > diff --git a/hw/i386/pc.c b/hw/i386/pc.c > index 05985d4..8e307f7 100644 > --- a/hw/i386/pc.c > +++ b/hw/i386/pc.c > @@ -1876,8 +1876,15 @@ static void pc_cpu_pre_plug(HotplugHandler *hotplug_dev, > CPUArchId *cpu_slot; > X86CPUTopoInfo topo; > X86CPU *cpu = X86_CPU(dev); > + MachineState *ms = MACHINE(hotplug_dev); > PCMachineState *pcms = PC_MACHINE(hotplug_dev); > > + if(!object_dynamic_cast(OBJECT(cpu), ms->cpu_type)) { > + error_setg(errp, "Invalid CPU type, expected cpu type: '%s'", > + ms->cpu_type); > + return; > + } > + > /* if APIC ID is not set, set it based on socket/core/thread properties */ > if (cpu->apic_id == UNASSIGNED_APIC_ID) { > int max_socket = (max_cpus - 1) / smp_threads / smp_cores; > Queued, thanks! Paolo
Hi, This series seems to have some coding style problems. See output below for more information: Type: series Message-id: 1507638879-200718-1-git-send-email-imammedo@redhat.com Subject: [Qemu-devel] [PATCH] pc: make sure that plugged CPUs are of the same type === TEST SCRIPT BEGIN === #!/bin/bash BASE=base n=1 total=$(git log --oneline $BASE.. | wc -l) failed=0 git config --local diff.renamelimit 0 git config --local diff.renames True commits="$(git log --format=%H --reverse $BASE..)" for c in $commits; do echo "Checking PATCH $n/$total: $(git log -n 1 --format=%s $c)..." if ! git show $c --format=email | ./scripts/checkpatch.pl --mailback -; then failed=1 echo fi n=$((n+1)) done exit $failed === TEST SCRIPT END === Updating 3c8cf5a9c21ff8782164d1def7f44bd888713384 From https://github.com/patchew-project/qemu * [new tag] patchew/20171010102418.13487-1-anthony.perard@citrix.com -> patchew/20171010102418.13487-1-anthony.perard@citrix.com Switched to a new branch 'test' 606d6b2956 pc: make sure that plugged CPUs are of the same type === OUTPUT BEGIN === Checking PATCH 1/1: pc: make sure that plugged CPUs are of the same type... ERROR: space required before the open parenthesis '(' #33: FILE: hw/i386/pc.c:1882: + if(!object_dynamic_cast(OBJECT(cpu), ms->cpu_type)) { total: 1 errors, 0 warnings, 15 lines checked Your patch has style problems, please review. If any of these errors are false positives report them to the maintainer, see CHECKPATCH in MAINTAINERS. === OUTPUT END === Test command exited with code: 1 --- Email generated automatically by Patchew [http://patchew.org/]. Please send your feedback to patchew-devel@freelists.org
heterogeneous cpus are not supported and hotplugging different
cpu model crashes QEMU:
qemu-system-x86_64 -cpu qemu64 -smp 1,maxcpus=2
(qemu) device_add host-x86_64-cpu,socket-id=1,core-id=0,thread-id=0,id=foo
(qemu) info cpus
error: failed to get MSR 0x38d
qemu-system-x86_64: target/i386/kvm.c:2121: kvm_get_msrs: Assertion `ret == cpu->kvm_msr_buf->nmsrs' failed.
Aborted (core dumped)
Gracefully fail hotplug process in case of user mistake.
Reported-by: Greg Kurz <groug@kaod.org>
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
---
v2:
fix checkpatch error
---
hw/i386/pc.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/hw/i386/pc.c b/hw/i386/pc.c
index 05985d4..8e307f7 100644
--- a/hw/i386/pc.c
+++ b/hw/i386/pc.c
@@ -1876,8 +1876,15 @@ static void pc_cpu_pre_plug(HotplugHandler *hotplug_dev,
CPUArchId *cpu_slot;
X86CPUTopoInfo topo;
X86CPU *cpu = X86_CPU(dev);
+ MachineState *ms = MACHINE(hotplug_dev);
PCMachineState *pcms = PC_MACHINE(hotplug_dev);
+ if (!object_dynamic_cast(OBJECT(cpu), ms->cpu_type)) {
+ error_setg(errp, "Invalid CPU type, expected cpu type: '%s'",
+ ms->cpu_type);
+ return;
+ }
+
/* if APIC ID is not set, set it based on socket/core/thread properties */
if (cpu->apic_id == UNASSIGNED_APIC_ID) {
int max_socket = (max_cpus - 1) / smp_threads / smp_cores;
--
2.7.4
On Tue, Oct 10, 2017 at 05:17:40PM +0200, Igor Mammedov wrote: > heterogeneous cpus are not supported and hotplugging different > cpu model crashes QEMU: > > qemu-system-x86_64 -cpu qemu64 -smp 1,maxcpus=2 > (qemu) device_add host-x86_64-cpu,socket-id=1,core-id=0,thread-id=0,id=foo > (qemu) info cpus > error: failed to get MSR 0x38d > qemu-system-x86_64: target/i386/kvm.c:2121: kvm_get_msrs: Assertion `ret == cpu->kvm_msr_buf->nmsrs' failed. > Aborted (core dumped) > > Gracefully fail hotplug process in case of user mistake. > > Reported-by: Greg Kurz <groug@kaod.org> > Signed-off-by: Igor Mammedov <imammedo@redhat.com> Acked-by: Michael S. Tsirkin <mst@redhat.com> IIUC Paolo's merging this. > --- > v2: > fix checkpatch error > --- > hw/i386/pc.c | 7 +++++++ > 1 file changed, 7 insertions(+) > > diff --git a/hw/i386/pc.c b/hw/i386/pc.c > index 05985d4..8e307f7 100644 > --- a/hw/i386/pc.c > +++ b/hw/i386/pc.c > @@ -1876,8 +1876,15 @@ static void pc_cpu_pre_plug(HotplugHandler *hotplug_dev, > CPUArchId *cpu_slot; > X86CPUTopoInfo topo; > X86CPU *cpu = X86_CPU(dev); > + MachineState *ms = MACHINE(hotplug_dev); > PCMachineState *pcms = PC_MACHINE(hotplug_dev); > > + if (!object_dynamic_cast(OBJECT(cpu), ms->cpu_type)) { > + error_setg(errp, "Invalid CPU type, expected cpu type: '%s'", > + ms->cpu_type); > + return; > + } > + > /* if APIC ID is not set, set it based on socket/core/thread properties */ > if (cpu->apic_id == UNASSIGNED_APIC_ID) { > int max_socket = (max_cpus - 1) / smp_threads / smp_cores; > -- > 2.7.4
On Tue, 10 Oct 2017 17:17:40 +0200 Igor Mammedov <imammedo@redhat.com> wrote: > heterogeneous cpus are not supported and hotplugging different > cpu model crashes QEMU: > > qemu-system-x86_64 -cpu qemu64 -smp 1,maxcpus=2 > (qemu) device_add host-x86_64-cpu,socket-id=1,core-id=0,thread-id=0,id=foo > (qemu) info cpus > error: failed to get MSR 0x38d > qemu-system-x86_64: target/i386/kvm.c:2121: kvm_get_msrs: Assertion `ret == cpu->kvm_msr_buf->nmsrs' failed. > Aborted (core dumped) > > Gracefully fail hotplug process in case of user mistake. > > Reported-by: Greg Kurz <groug@kaod.org> > Signed-off-by: Igor Mammedov <imammedo@redhat.com> > --- > v2: > fix checkpatch error > --- (qemu) device_add host-x86_64-cpu,socket-id=1,core-id=0,thread-id=0,id=foo Invalid CPU type, expected cpu type: 'qemu64-x86_64-cpu' Tested-by: Greg Kurz <groug@kaod.org> > hw/i386/pc.c | 7 +++++++ > 1 file changed, 7 insertions(+) > > diff --git a/hw/i386/pc.c b/hw/i386/pc.c > index 05985d4..8e307f7 100644 > --- a/hw/i386/pc.c > +++ b/hw/i386/pc.c > @@ -1876,8 +1876,15 @@ static void pc_cpu_pre_plug(HotplugHandler *hotplug_dev, > CPUArchId *cpu_slot; > X86CPUTopoInfo topo; > X86CPU *cpu = X86_CPU(dev); > + MachineState *ms = MACHINE(hotplug_dev); > PCMachineState *pcms = PC_MACHINE(hotplug_dev); > > + if (!object_dynamic_cast(OBJECT(cpu), ms->cpu_type)) { > + error_setg(errp, "Invalid CPU type, expected cpu type: '%s'", > + ms->cpu_type); > + return; > + } > + > /* if APIC ID is not set, set it based on socket/core/thread properties */ > if (cpu->apic_id == UNASSIGNED_APIC_ID) { > int max_socket = (max_cpus - 1) / smp_threads / smp_cores;
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