Messages in this thread Patch in this message | | | From | "Jason J. Herne" <> | Subject | [PATCH] Fixes: 805de8f43c20 (atomic: Replace atomic_{set,clear}_mask() usage) | Date | Wed, 16 Sep 2015 09:13:50 -0400 |
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The offending commit accidentally replaces an atomic_clear with an atomic_or instead of an atomic_andnot in kvm_s390_vcpu_request_handled. The symptom is that kvm guests on s390 hang on startup. This patch simply replaces the incorrect atomic_or with atomic_andnot
Signed-off-by: Jason J. Herne <jjherne@linux.vnet.ibm.com> --- arch/s390/kvm/kvm-s390.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c index c91eb94..49e76be 100644 --- a/arch/s390/kvm/kvm-s390.c +++ b/arch/s390/kvm/kvm-s390.c @@ -1574,7 +1574,7 @@ static void kvm_s390_vcpu_request(struct kvm_vcpu *vcpu) static void kvm_s390_vcpu_request_handled(struct kvm_vcpu *vcpu) { - atomic_or(PROG_REQUEST, &vcpu->arch.sie_block->prog20); + atomic_andnot(PROG_REQUEST, &vcpu->arch.sie_block->prog20); } /* -- 1.9.1
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