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From: Greg KH on 1 Jul 2010 14:30
2.6.32-stable review patch. If anyone has any objections, please let us know.

------------------

From: Avi Kivity <avi(a)redhat.com>

Signed-off-by: Avi Kivity <avi(a)redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh(a)suse.de>
(cherry picked from commit 8fbf065d625617bbbf6b72d5f78f84ad13c8b547)
---
arch/x86/kvm/x86.c | 6 ++++++
1 file changed, 6 insertions(+)

--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -1420,6 +1420,7 @@ static int kvm_vcpu_ioctl_get_cpuid2(str
{
int r;

+ vcpu_load(vcpu);
r = -E2BIG;
if (cpuid->nent < vcpu->arch.cpuid_nent)
goto out;
@@ -1431,6 +1432,7 @@ static int kvm_vcpu_ioctl_get_cpuid2(str

out:
cpuid->nent = vcpu->arch.cpuid_nent;
+ vcpu_put(vcpu);
return r;
}

@@ -1680,6 +1682,7 @@ static int kvm_vcpu_ioctl_x86_setup_mce(
int r;
unsigned bank_num = mcg_cap & 0xff, bank;

+ vcpu_load(vcpu);
r = -EINVAL;
if (!bank_num || bank_num >= KVM_MAX_MCE_BANKS)
goto out;
@@ -1694,6 +1697,7 @@ static int kvm_vcpu_ioctl_x86_setup_mce(
for (bank = 0; bank < bank_num; bank++)
vcpu->arch.mce_banks[bank*4] = ~(u64)0;
out:
+ vcpu_put(vcpu);
return r;
}

@@ -1896,7 +1900,9 @@ long kvm_arch_vcpu_ioctl(struct file *fi
r = -EFAULT;
if (copy_from_user(&mce, argp, sizeof mce))
goto out;
+ vcpu_load(vcpu);
r = kvm_vcpu_ioctl_x86_set_mce(vcpu, &mce);
+ vcpu_put(vcpu);
break;
}
default:


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Prev: [patch 149/149] sctp: fix append error cause to ERROR chunk correctly
Next: [patch 005/149] sata_nv: use ata_pci_sff_activate_host() instead of ata_host_activate()