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[Qemu-devel] [PATCH v9 4/7] s390x/cpu: Tolerate max_cpus
From: |
Matthew Rosato |
Subject: |
[Qemu-devel] [PATCH v9 4/7] s390x/cpu: Tolerate max_cpus |
Date: |
Fri, 4 Mar 2016 12:34:32 -0500 |
Once hotplug is enabled, interrupts may come in for CPUs
with an address > smp_cpus. Allocate for this and allow
search routines to look beyond smp_cpus.
Signed-off-by: Matthew Rosato <address@hidden>
---
hw/s390x/s390-virtio.c | 11 ++++++-----
1 file changed, 6 insertions(+), 5 deletions(-)
diff --git a/hw/s390x/s390-virtio.c b/hw/s390x/s390-virtio.c
index c501a48..57c3c88 100644
--- a/hw/s390x/s390-virtio.c
+++ b/hw/s390x/s390-virtio.c
@@ -58,15 +58,16 @@
#define S390_TOD_CLOCK_VALUE_MISSING 0x00
#define S390_TOD_CLOCK_VALUE_PRESENT 0x01
-static S390CPU **ipi_states;
+static S390CPU **cpu_states;
S390CPU *s390_cpu_addr2state(uint16_t cpu_addr)
{
- if (cpu_addr >= smp_cpus) {
+ if (cpu_addr >= max_cpus) {
return NULL;
}
- return ipi_states[cpu_addr];
+ /* Fast lookup via CPU ID */
+ return cpu_states[cpu_addr];
}
void s390_init_ipl_dev(const char *kernel_filename,
@@ -101,14 +102,14 @@ void s390_init_cpus(MachineState *machine)
machine->cpu_model = "host";
}
- ipi_states = g_malloc(sizeof(S390CPU *) * smp_cpus);
+ cpu_states = g_malloc0(sizeof(S390CPU *) * max_cpus);
for (i = 0; i < smp_cpus; i++) {
S390CPU *cpu;
cpu = cpu_s390x_init(machine->cpu_model);
- ipi_states[i] = cpu;
+ cpu_states[i] = cpu;
}
}
--
1.9.1
- [Qemu-devel] [PATCH v9 0/7] Allow hotplug of s390 CPUs, Matthew Rosato, 2016/03/04
- [Qemu-devel] [PATCH v9 1/7] s390x/cpu: Cleanup init in preparation for hotplug, Matthew Rosato, 2016/03/04
- [Qemu-devel] [PATCH v9 2/7] s390x/cpu: Set initial CPU state in common routine, Matthew Rosato, 2016/03/04
- [Qemu-devel] [PATCH v9 3/7] s390x/cpu: Get rid of side effects when creating a vcpu, Matthew Rosato, 2016/03/04
- [Qemu-devel] [PATCH v9 4/7] s390x/cpu: Tolerate max_cpus,
Matthew Rosato <=
- [Qemu-devel] [PATCH v9 6/7] s390x/cpu: Add error handling to cpu creation, Matthew Rosato, 2016/03/04
- [Qemu-devel] [PATCH v9 5/7] s390x/cpu: Add CPU property links, Matthew Rosato, 2016/03/04
- [Qemu-devel] [PATCH v9 7/7] s390x/cpu: Allow hotplug of CPUs, Matthew Rosato, 2016/03/04
- Re: [Qemu-devel] [PATCH v9 0/7] Allow hotplug of s390 CPUs, Christian Borntraeger, 2016/03/07
- Re: [Qemu-devel] [PATCH v9 0/7] Allow hotplug of s390 CPUs, Cornelia Huck, 2016/03/07