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authorRusty Russell <rusty@rustcorp.com.au>2008-12-07 21:25:45 +1030
committerAvi Kivity <avi@redhat.com>2008-12-31 16:55:45 +0200
commit7f59f492da722eb3551bbe1f8f4450a21896f05d (patch)
treeaf51214d804586dd17b3d65aba0e6687a274fb74 /virt
parent6ef7a1bc45f80fe0a263119d404688c596ea5031 (diff)
downloadlinux-7f59f492da722eb3551bbe1f8f4450a21896f05d.tar.gz
KVM: use cpumask_var_t for cpus_hardware_enabled
This changes cpus_hardware_enabled from a cpumask_t to a cpumask_var_t: equivalent for CONFIG_CPUMASKS_OFFSTACK=n, otherwise dynamically allocated. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'virt')
-rw-r--r--virt/kvm/kvm_main.c20
1 files changed, 14 insertions, 6 deletions
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index 2d6ca7968d6..e7644b90667 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -70,7 +70,7 @@ module_param(msi2intx, bool, 0);
DEFINE_SPINLOCK(kvm_lock);
LIST_HEAD(vm_list);
-static cpumask_t cpus_hardware_enabled;
+static cpumask_var_t cpus_hardware_enabled;
struct kmem_cache *kvm_vcpu_cache;
EXPORT_SYMBOL_GPL(kvm_vcpu_cache);
@@ -1965,9 +1965,9 @@ static void hardware_enable(void *junk)
{
int cpu = raw_smp_processor_id();
- if (cpu_isset(cpu, cpus_hardware_enabled))
+ if (cpumask_test_cpu(cpu, cpus_hardware_enabled))
return;
- cpu_set(cpu, cpus_hardware_enabled);
+ cpumask_set_cpu(cpu, cpus_hardware_enabled);
kvm_arch_hardware_enable(NULL);
}
@@ -1975,9 +1975,9 @@ static void hardware_disable(void *junk)
{
int cpu = raw_smp_processor_id();
- if (!cpu_isset(cpu, cpus_hardware_enabled))
+ if (!cpumask_test_cpu(cpu, cpus_hardware_enabled))
return;
- cpu_clear(cpu, cpus_hardware_enabled);
+ cpumask_clear_cpu(cpu, cpus_hardware_enabled);
kvm_arch_hardware_disable(NULL);
}
@@ -2211,9 +2211,14 @@ int kvm_init(void *opaque, unsigned int vcpu_size,
bad_pfn = page_to_pfn(bad_page);
+ if (!alloc_cpumask_var(&cpus_hardware_enabled, GFP_KERNEL)) {
+ r = -ENOMEM;
+ goto out_free_0;
+ }
+
r = kvm_arch_hardware_setup();
if (r < 0)
- goto out_free_0;
+ goto out_free_0a;
for_each_online_cpu(cpu) {
smp_call_function_single(cpu,
@@ -2277,6 +2282,8 @@ out_free_2:
on_each_cpu(hardware_disable, NULL, 1);
out_free_1:
kvm_arch_hardware_unsetup();
+out_free_0a:
+ free_cpumask_var(cpus_hardware_enabled);
out_free_0:
__free_page(bad_page);
out:
@@ -2300,6 +2307,7 @@ void kvm_exit(void)
kvm_arch_hardware_unsetup();
kvm_arch_exit();
kvm_exit_debug();
+ free_cpumask_var(cpus_hardware_enabled);
__free_page(bad_page);
}
EXPORT_SYMBOL_GPL(kvm_exit);