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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2009-08-07 10:46:09 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-08-07 10:46:09 -0700 |
| commit | 9cf9d28e9bf991af21fc4bbf33281b66843b094b (patch) | |
| tree | f7036272a25b2084439c7293f13bd20a15c1362a | |
| parent | ff1649ff780fb7c0bfbf42d05ffc9b56336b9aa3 (diff) | |
| parent | 53cb780adbe69df90c8dc23e992ce40455e687c3 (diff) | |
| download | linux-9cf9d28e9bf991af21fc4bbf33281b66843b094b.tar.gz | |
Merge branch 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6
* 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6: [S390] KVM: Read buffer overflow [S390] kernel: Storing machine flags early in lowcore
| -rw-r--r-- | arch/s390/kernel/early.c | 3 | ||||
| -rw-r--r-- | arch/s390/kvm/sigp.c | 7 |
2 files changed, 7 insertions, 3 deletions
diff --git a/arch/s390/kernel/early.c b/arch/s390/kernel/early.c index 8d15314381e0..cae14c499511 100644 --- a/arch/s390/kernel/early.c +++ b/arch/s390/kernel/early.c @@ -208,6 +208,9 @@ static noinline __init void detect_machine_type(void) machine_flags |= MACHINE_FLAG_KVM; else machine_flags |= MACHINE_FLAG_VM; + + /* Store machine flags for setting up lowcore early */ + S390_lowcore.machine_flags = machine_flags; } static __init void early_pgm_check_handler(void) diff --git a/arch/s390/kvm/sigp.c b/arch/s390/kvm/sigp.c index 36678835034d..0ef81d6776e9 100644 --- a/arch/s390/kvm/sigp.c +++ b/arch/s390/kvm/sigp.c @@ -169,7 +169,7 @@ static int __sigp_set_prefix(struct kvm_vcpu *vcpu, u16 cpu_addr, u32 address, unsigned long *reg) { struct kvm_s390_float_interrupt *fi = &vcpu->kvm->arch.float_int; - struct kvm_s390_local_interrupt *li; + struct kvm_s390_local_interrupt *li = NULL; struct kvm_s390_interrupt_info *inti; int rc; u8 tmp; @@ -189,9 +189,10 @@ static int __sigp_set_prefix(struct kvm_vcpu *vcpu, u16 cpu_addr, u32 address, return 2; /* busy */ spin_lock(&fi->lock); - li = fi->local_int[cpu_addr]; + if (cpu_addr < KVM_MAX_VCPUS) + li = fi->local_int[cpu_addr]; - if ((cpu_addr >= KVM_MAX_VCPUS) || (li == NULL)) { + if (li == NULL) { rc = 1; /* incorrect state */ *reg &= SIGP_STAT_INCORRECT_STATE; kfree(inti); |