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| author | Christian Borntraeger <borntraeger@de.ibm.com> | 2009-01-22 14:20:27 +0100 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2009-03-24 11:03:07 +0200 |
| commit | 2c411b48af3e3c534b9cfb6a79be1df384d1ca1a (patch) | |
| tree | 0c0ef4795033b2cd9ed7bed7c91cb0825d586ce9 | |
| parent | 7d656bd996b68737d5d07643bc57311059038d67 (diff) | |
| download | linux-2c411b48af3e3c534b9cfb6a79be1df384d1ca1a.tar.gz linux-2c411b48af3e3c534b9cfb6a79be1df384d1ca1a.tar.bz2 linux-2c411b48af3e3c534b9cfb6a79be1df384d1ca1a.zip | |
KVM: s390: Fix printk on SIGP set arch
KVM on s390 does not support the ESA/390 architecture. We refuse to
change the architecture mode and print a warning. This patch removes
the printk for several reasons:
o A malicious guest can flood host dmesg
o The old message had no newline
o there is no connection between the message and the failing guest
This patch simply removes the printk. We already set the condition
code to 3 - the guest knows that something went wrong.
Reported-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
| -rw-r--r-- | arch/s390/kvm/sigp.c | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/arch/s390/kvm/sigp.c b/arch/s390/kvm/sigp.c index 2a01b9e02801..f27dbedf0866 100644 --- a/arch/s390/kvm/sigp.c +++ b/arch/s390/kvm/sigp.c @@ -153,8 +153,6 @@ static int __sigp_set_arch(struct kvm_vcpu *vcpu, u32 parameter) switch (parameter & 0xff) { case 0: - printk(KERN_WARNING "kvm: request to switch to ESA/390 mode" - " not supported"); rc = 3; /* not operational */ break; case 1: |