On 06/18/2010 12:16 AM, Christian Borntraeger wrote:
Avi, Marcello,
Newer (guest) kernels use sigp sense running in their spinlock
implementation to check if the other cpu is running before yielding
the processor. This revealed some wrong guest settings, causing
unnecessary exits for every sigp
Am Montag 21 Juni 2010, 10:27:50 schrieb Avi Kivity:
[...]
VCPU_EVENT(vcpu, 3, %s, free cpu);
+ clear_bit(63 - vcpu-vcpu_id, (unsigned long
*)vcpu-kvm-arch.sca-mcn);
if (vcpu-kvm-arch.sca-cpu[vcpu-vcpu_id].sda ==
(__u64) vcpu-arch.sie_block)
On Monday 21 June 2010, Christian Borntraeger wrote:
Hmm, dont know. Currently this calls into a s390 debug tracing facility
(arch/s390/kernel/debug.c) which is heavily used by our service folks.
There are commands for crash and lcrash to show these s390 debug traces
from a dump.
Maybe its
Avi, Marcello,
Newer (guest) kernels use sigp sense running in their spinlock
implementation to check if the other cpu is running before yielding
the processor. This revealed some wrong guest settings, causing
unnecessary exits for every sigp sense running.
Signed-off-by: Christian Borntraeger
